MLAG Configuration
This chapter contains a complete example of Multi-Chassis Link Aggregation (MLAG) configuration.
MLAG (also called DRNI, Distributed Resilient Network Interconnect) expands the concept of link aggregation so that it provides node-level redundancy by allowing two or more nodes to share a common LAG endpoint. MLAG emulates multiple nodes to represent as a single logical node to the remote node running link aggregation. As a result even if one of the nodes is down there exists a path to reach the destination through the other nodes.
Note:
• MLAG is compatible only with a RSTP VLAN-aware bridge or a spanning tree disabled bridge.
• All MLAG nodes must have the same MAC table size as specified by each node’s switching ASIC forwarding profile limit.
• For multi-ASIC boards, performing measurements (as either sender or reflector) on LAG interfaces requires all LAG members to be located on the same ASIC.
• More than one IDL is not supported in single node under mcec configuration.
• IDL and IDP configurations are allowed together, IDP will provide a Layer 3 communication path which will be used as a Secondary test to determine the state of MLAG Peer, however It is recommended not to use IDP without IDL for MLAG Active-Active.
• The idl-higig CLI is not supported on Tomahawk3 series platforms.
Dynamic Configuration
Topology
As shown in Figure 9-19, switches 3 and 4 form an MLAG domain. Switches 3 and 4 are a single logical switch to switches 1 and 2. Even if either switch 3 or 4 is down, there exists a path to reach other destinations.
MLAG Topology
Switch 1
#configure terminal | Enter configure mode. |
(config)#bridge 1 protocol rstp vlan-bridge | Create RSTP bridge 1. |
(config)#vlan database | Enter vlan database mode. |
(config-vlan)#vlan 2 bridge 1 state enable | Create VLAN 2. |
(config-vlan)#exit | Exit vlan database mode. |
(config)#interface po2 | Enter interface mode. |
(config-if)#switchport | Configure the interface as Layer 2 |
(config-if)#bridge-group 1 | Associate the interface with bridge group 1. |
(config-if)#switchport mode trunk | Set the switching characteristics of this interface to trunk mode. |
(config-if)#switchport trunk allowed vlan all | Enable all VLAN identifiers on this interface. |
(config-if)#exit | Exit interface mode. |
(config)#interface xe1 | Enter interface mode. |
(config-if)#channel-group 2 mode active | Add this interface to channel group 2 and enable link aggregation so that it can be selected for aggregation by the local system. |
(config-if)#exit | Exit interface mode. |
(config)#interface xe2 | Enter interface mode. |
(config-if)#channel-group 2 mode active | Add this interface to channel group 2 and enable link aggregation so that it can be selected for aggregation by the local system. |
(config-if)#exit | Exit interface mode. |
(config)#interface xe33 | Enter interface mode. |
(config-if)#channel-group 2 mode active | Add this interface to channel group 2 and enable link aggregation so that it can be selected for aggregation by the local system. |
(config-if)#exit | Exit interface mode. |
(config)#interface xe34 | Enter interface mode. |
(config-if)#channel-group 2 mode active | Add this interface to channel group 2 and enable link aggregation so that it can be selected for aggregation by the local system. |
(config-if)#exit | Exit interface mode. |
(config)#commit | Commit the transaction. |
Switch 2
#configure terminal | Enter configure mode. |
(config)#bridge 1 protocol rstp vlan-bridge | Create RSTP bridge 1. |
(config)#vlan database | Enter vlan database mode. |
(config-vlan)#vlan 2 bridge 1 state enable | Create VLAN 2. |
(config-vlan)#exit | Exit vlan database mode. |
(config)#interface po1 | Enter interface mode. |
(config-if)#switchport | Configure the interface as Layer 2 |
(config-if)#bridge-group 1 | Associate the interface with bridge group 1. |
(config-if)#switchport mode trunk | Set the switching characteristics of this interface to trunk mode. |
(config-if)#switchport trunk allowed vlan all | Enable all VLAN identifiers on this interface. |
(config-if)#exit | Exit interface mode. |
(config)#interface xe5 | Enter interface mode. |
(config-if)#channel-group 1 mode active | Add this interface to channel group 1 and enable link aggregation so that it can be selected for aggregation by the local system. |
(config-if)#exit | Exit interface mode. |
(config)#interface xe6 | Enter interface mode. |
(config-if)#channel-group 1 mode active | Add this interface to channel group 1 and enable link aggregation so that it can be selected for aggregation by the local system. |
(config-if)#exit | Exit interface mode. |
(config)#interface xe7 | Enter interface mode. |
(config-if)#channel-group 1 mode active | Add this interface to channel group 1 and enable link aggregation so that it can be selected for aggregation by the local system. |
(config-if)#exit | Exit interface mode. |
(config)#interface xe8 | Enter interface mode. |
(config-if)#channel-group 1 mode active | Add this interface to channel group 1 and enable link aggregation so that it can be selected for aggregation by the local system. |
(config-if)#exit | Exit interface mode. |
(config)#commit | Commit the transaction. |
Switch 3
#configure terminal | Enter configure mode. |
(config)#bridge 1 protocol rstp vlan-bridge | Create RSTP bridge 1. |
(config)#vlan database | Enter vlan database mode. |
(config-vlan)#vlan 2 bridge 1 state enable | Create VLAN 2. |
(config-vlan)#exit | Exit vlan database mode. |
(config)#interface mlag1 | Enter interface mode. |
(config-if)#switchport | Configure the interface as Layer 2 |
(config-if)#bridge-group 1 | Associate the interface with bridge group 1. |
(config-if)#switchport mode trunk | Set the switching characteristics of this interface to trunk mode. |
(config-if)#switchport trunk allowed vlan all | Enable all VLAN identifiers on this interface. |
(config-if)#exit | Exit interface mode. |
(config)#interface mlag2 | Enter interface mode. |
(config-if)#switchport | Configure the interface as Layer 2 |
(config-if)#bridge-group 1 | Associate the interface with bridge group 1. |
(config-if)#switchport mode trunk | Set the switching characteristics of this interface to trunk mode. |
(config-if)#switchport trunk allowed vlan all | Enable all VLAN identifiers on this interface. |
(config-if)#exit | Exit interface mode. |
(config)#interface po1 | Enter interface mode. |
(config-if)#switchport | Configure the interface as Layer 2 |
(config-if)#mlag 1 | Enabling Mlag group number |
(config-if)#exit | Exit interface mode. |
(config)#interface po2 | Enter interface mode. |
(config-if)#switchport | Configure the interface as Layer 2 |
(config-if)#mlag 2 | enabling Mlag group number |
(config-if)#exit | Exit interface mode. |
(config)#interface xe9 | Enter interface mode. |
(config-if)#channel-group 1 mode active | Add this interface to channel group 1 and enable link aggregation so that it can be selected for aggregation by the local system. |
(config-if)#exit | Exit interface mode. |
(config)#interface xe57 | Enter interface mode. |
(config-if)#channel-group 2 mode active | Add this interface to channel group 2 and enable link aggregation so that it can be selected for aggregation by the local system. |
(config-if)#exit | Exit interface mode. |
(config)#interface xe58 | Enter interface mode. |
(config-if)#channel-group 2 mode active | Add this interface to channel group 2 and enable link aggregation so that it can be selected for aggregation by the local system. |
(config-if)#exit | Exit interface mode. |
(config)#interface xe10 | Enter interface mode. |
(config-if)#channel-group 1 mode active | Add this interface to channel group 1 and enable link aggregation so that it can be selected for aggregation by the local system. |
(config-if)#exit | Exit interface mode. |
(config)#interface xe49 | Enter interface mode. |
(config-if)#switchport | Configure the interface as Layer 2 |
(config-if)#exit | Exit interface mode. |
(cosnfig)#commit | Commit the transaction. |
(config)#mcec domain configuration | Entering MCEC mode |
(config-mcec-domain)#domain-address 1111.2222.3333 | Domain address for the mlag domain |
(config-mcec-domain)#intra-domain link xe49 | Intra domain line between mlag domain |
(config-mcec-domain)#domain-system-number 1 | Number to identify the node in a domain |
(config-mcec-domain)#exit | Exit MCEC mode |
(config)#commit | Commit the transaction. |
Switch 4
#configure terminal | Enter configure mode. |
(config)#bridge 1 protocol rstp vlan-bridge | Create RSTP bridge 1. |
(config)#vlan database | Enter vlan database mode. |
(config-vlan)#vlan 2 bridge 1 state enable | Create VLAN 2. |
(config-vlan)#exit | Exit vlan database mode. |
(config-if)#switchport | Configure the interface as Layer 2 |
(config-if)#bridge-group 1 | Associate the interface with bridge group 1. |
(config-if)#switchport mode trunk | Set the switching characteristics of this interface to trunk mode. |
(config-if)#switchport trunk allowed vlan all | Enable all VLAN identifiers on this interface. |
(config-if)#exit | Exit interface mode. |
(config)#interface mlag2 | Enter interface mode. |
(config-if)#switchport | Configure the interface as Layer 2 |
(config-if)#bridge-group 1 | Associate the interface with bridge group 1. |
(config-if)#switchport mode trunk | Set the switching characteristics of this interface to trunk mode. |
(config-if)#switchport trunk allowed vlan all | Enable all VLAN identifiers on this interface. |
(config-if)#exit | Exit interface mode. |
(config)#interface po1 | Enter interface mode. |
(config-if)#switchport | Configure the interface as Layer 2 |
(config-if)#mlag 1 | Enabling Mlag group number |
(config-if)#exit | Exit interface mode. |
(config)#interface po2 | Enter interface mode. |
(config-if)#switchport | Configure the interface as Layer 2 |
(config-if)#mlag 2 | enabling Mlag group number |
(config-if)#exit | Exit interface mode. |
(config)#interface xe9 | Enter interface mode. |
(config-if)#channel-group 1 mode active | Add this interface to channel group 1 and enable link aggregation so that it can be selected for aggregation by the local system. |
(config-if)#exit | Exit interface mode. |
(config)#interface xe10 | Enter interface mode. |
(config-if)#channel-group 1 mode active | Add this interface to channel group 1 and enable link aggregation so that it can be selected for aggregation by the local system. |
(config-if)#exit | Exit interface mode. |
(config)#interface xe57 | Enter interface mode. |
(config-if)#channel-group 2 mode active | Add this interface to channel group 2 and enable link aggregation so that it can be selected for aggregation by the local system. |
(config-if)#exit | Exit interface mode. |
(config)#interface xe58 | Enter interface mode. |
(config-if)#channel-group 2 mode active | Add this interface to channel group 2 and enable link aggregation so that it can be selected for aggregation by the local system. |
(config-if)#exit | Exit interface mode. |
(config)#interface xe49 | Enter interface mode. |
(config-if)#switchport | Configure the interface as Layer 2 |
(config-if)#exit | Exit interface mode. |
(config)#commit | Commit the transaction. |
(config)#mcec domain configuration | Entering MCEC mode |
(config-mcec-domain)#domain-address 1111.2222.3333 | Domain address for the Mlag domain |
(config-mcec-domain)#intra-domain link xe49 | Intra domain Link between Mlag domains |
(config-mcec-domain)#domain-system-number 2 | Number to identify the node in domain |
(config-mcec-domain)#exit | Exit MCEC mode |
(config)#commit | Commit the transaction. |
Validation
Switch 3
#sh mlag domain details
------------------------------------
Domain Configuration
------------------------------------
Domain System Number : 1
Domain Address : 1111.2222.3333
Domain Priority : 1000
Intra Domain Interface : xe49
Hello RCV State : Current
Hello Periodic Timer State : Fast Periodic
Domain Sync : IN_SYNC
Neigh Domain Sync : IN_SYNC
Domain Adjacency : UP
------------------------------------
MLAG Configuration
------------------------------------
MLAG-1
Mapped Aggregator : po1
Admin Key : 16385
Oper Key : 16385
Physical properties Digest : dd 9c f 76 dd b6 5f 2f eb a1 d3 bb 8d 96 fc 82
Neigh Admin Key : 32769
Neigh Physical Digest : dd 9c f 76 dd b6 5f 2f eb a1 d3 bb 8d 96 fc 82
Info RCV State : Current
Info Periodic Time State : Standby
Mlag Sync : IN_SYNC
Mode : Active-Active
Current Mlag State : Active
MLAG-2
Mapped Aggregator : po2
Admin Key : 16386
Oper Key : 16386
Physical properties Digest : dd 9c f 76 dd b6 5f 2f eb a1 d3 bb 8d 96 fc 82
Neigh Admin Key : 32770
Neigh Physical Digest : dd 9c f 76 dd b6 5f 2f eb a1 d3 bb 8d 96 fc 82
Info RCV State : Current
Info Periodic Time State : Standby
Mlag Sync : IN_SYNC
Mode : Active-Active
Current Mlag State : Active
#sh etherchannel summary
% Aggregator po1 0
% Aggregator Type: Layer2
% Admin Key: 16385 - Oper Key 16385
% Link: xe57 (5057) sync: 1 (Mlag-active-link)
% Link: xe58 (5058) sync: 1 (Mlag-active-link)
% Aggregator po2 0
% Aggregator Type: Layer2
% Admin Key: 16386 - Oper Key 16386
% Link: xe9 (5009) sync : 1 (Mlag-active-link)
% Link: xe10 (5010) sync: 1 (Mlag-active-link)
#sh mlag 1 detail
MLAG-1
Mapped Aggregator : po1
Admin Key : 16385
Oper Key : 16385
Physical properties Digest : dd 9c f 76 dd b6 5f 2f eb a1 d3 bb 8d 96 fc 82
Neigh Admin Key : 32769
Neigh Physical Digest : dd 9c f 76 dd b6 5f 2f eb a1 d3 bb 8d 96 fc 82
Info RCV State : Current
Info Periodic Time State : Standby
Total Bandwidth : 20g
Mlag Sync : IN_SYNC
Mode : Active-Active
Current Mlag State : Active
sh mcec statistics
Unknown MCCPDU received on the system : 0
------------------------------------
IDP xe49
------------------------------------
Valid RX Hello PDUs : 398
Valid TX Hello PDUs : 417
Valid RX Info PDUs : 16
Valid TX Info PDUs : 6
Valid RX Mac Sync PDUs : 3
Valid TX Mac Sync PDUs : 4
MLAG 1
Valid RX Info PDUs : 8
Valid TX Info PDUs : 3
MLAG 2
Valid RX Info PDUs : 8
Valid TX Info PDUs : 3
sh mlag domain summary
------------------------------------
Domain Configuration
------------------------------------
Domain System Number : 1
Domain Address : 1111.2222.3333
Domain Priority : 1000
Intra Domain Interface : xe49
Domain Adjacency : UP
------------------------------------
MLAG Configuration
------------------------------------
MLAG-1
Mapped Aggregator : po1
Physical properties Digest : dd 9c f 76 dd b6 5f 2f eb a1 d3 bb 8d 96 fc 82
Total Bandwidth : 40g
Mlag Sync : IN_SYNC
Mode : Active-Active
Current Mlag State : Active
MLAG-2
Mapped Aggregator : po2
Physical properties Digest : dd 9c f 76 dd b6 5f 2f eb a1 d3 bb 8d 96 fc 82
Total Bandwidth : 40g
Mlag Sync : IN_SYNC
Mode : Active-Active
Current Mlag State : Active
Static Configuration
Static MLAG provides node-level redundancy by allowing two or more nodes in the network to share a common static-LAG endpoint. It emulates multiple nodes to represent as a single logical node to the remote node having static Link aggregation. As a result, even if one of the nodes is down there exists a path to reach the destination via other nodes.
Topology
Static MLAG topology
L2SW
#configure terminal | Enter configure mode. |
(config)#hostname L2SW | Configuring host name |
(config)#bridge 1 protocol rstp vlan-bridge | Create a RSTP VLAN bridge on customer side |
(config)#vlan database | Enter vlan database mode. |
(config-vlan)#vlan 2 bridge 1 state enable | Configure VLAN for the bridge |
(config-vlan)#exit | Exit vlan database mode. |
(config)#interface sa1 | Enter the interface mode |
(config-if)#switchport | Configure the interface as Layer 2 |
(config-if)# bridge-group 1 spanning-tree disable | Disable the spanning-tree for the interface |
(config-if)#switchport mode hybrid | Configure the mode as hybrid |
(config-if)#switchport hybrid allowed vlan all | Configure allowed VLAN all on the interface |
(config-if)#exit | Exit the interface mode |
(config)#interface xe2 | Enter the interface mode |
(config-if)# static-channel-group 1 | Map static channel to the interface |
(config-if)#exit | Exit the interface mode |
(config)#interface xe9 | Enter the interface mode |
(config-if)# static-channel-group 1 | Map static channel to the interface |
(config-if)#exit | Exit the interface mode |
(config)#interface xe11 | Enter the interface mode |
(config-if)# static-channel-group 1 | Map static channel to the interface |
(config-if)#exit | Exit the interface mode |
(config)#interface xe22 | Enter the interface mode |
(config-if)# static-channel-group 1 | Map static channel to the interface |
(config-if)#exit | Exit the interface mode |
(config)#interface xe47 | Enter the interface mode |
(config-if)#switchport | Make the interface as switch port |
(config-if)# bridge-group 1 spanning-tree disable | Disable the spanning-tree for the interface |
(config-if)#switchport mode hybrid | Configure the mode as hybrid |
(config-if)#switchport hybrid allowed vlan all | Configure allowed VLAN all on the interface |
(config-if)#exit | Exit the interface mode |
(config)#commit | Commit the transaction. |
TOR1
#configure terminal | Enter configure mode. |
(config)#hostname TOR1 | Configuring host name |
(config)#bridge 1 protocol provider-rstp edge | Create a PROVIDER-RSTP EDGE bridge |
(config)#vlan database | Enter vlan database mode. |
(config-vlan)#vlan 2 type customer bridge 1 state enable | Configure VLAN for the bridge |
(config-vlan)# vlan 200 type service point-point bridge 1 state enable | Configure SVLAN for the bridge |
(config-vlan)#exit | Exit vlan database mode. |
(config)# #cvlan registration table map1 bridge 1 | Configure cvlan-svlan mapping registration table for the bridge. |
(config-cvlan-registration)#cvlan 2 svlan 200 | Map CVLAN to SVLAN |
(config-cvlan-registration)#exit | Exit the config-cvlan-registration mode |
(config)#interface mlag1 | Enter the interface mode |
(config-if)#switchport | Make the interface as switch port |
(config-if)#bridge-group 1 spanning-tree disable | Associate the interface to bridge and disable the spanning tree. |
(config-if)# switchport mode customer-edge hybrid | Configure the mode as customer-edge hybrid |
(config-if)# switchport customer-edge hybrid allowed vlan all | Configure allowed VLAN all on the interface |
(config-if)#switchport customer-edge vlan registration map1 | Map the cvlan registration table into the MLAG interface |
(config-if)#mode active-standby | Configuring MLAG mode |
(config-if)#exit | Exit the interface mode |
(config)#interface mlag2 | Enter the interface mode |
(config-if)#switchport | Make the interface as switch port |
(config-if)#bridge-group 1 spanning-tree disable | Associate the interface to bridge and disable the spanning-tree. |
(config-if)# switchport mode provider-network | Configure the mode as provider-network |
(config-if)# switchport provider-network allowed vlan all | Configure allowed VLAN all on the interface |
(config-if)#mode active-standby | Configuring MLAG mode |
(config-if)#exit | Exit the interface mode |
(config)#interface sa1 | Enter the interface mode |
(config-if)#switchport | Make the interface as switch port |
(config-if)#mlag 1 | Map MLAG on SA interface |
(config-if)#exit | Exit the interface mode |
(config)#interface sa2 | Enter the interface mode |
(config-if)#switchport | Make the interface as switch port |
(config-if)#mlag 2 | Map MLAG on SA interface |
(config-if)#exit | Exit the interface mode |
(config)#interface xe1 | Enter the interface mode |
(config-if)# static-channel-group 2 | Map static channel-group to the interface |
(config-if)#exit | Exit the interface mode |
(config)#interface xe13 | Enter the interface mode |
(config-if)# static-channel-group 2 | Map static channel-group to the interface |
(config-if)#exit | Exit the interface mode |
(config)#interface xe9 | Enter the interface mode |
(config-if)# static-channel-group 1 | Map static channel-group to the interface |
(config-if)#exit | Exit the interface mode |
(config)#interface xe11 | Enter the interface mode |
(config-if)# static-channel-group 1 | Map static channel to the interface |
(config-if)#exit | Exit the interface mode |
(config)#interface sa5 | Enter the interface mode |
(config-if)#switchport | Make the interface as switch port |
(config-if)#exit | Exit the interface mode |
(config)#interface xe3 | Enter the interface mode |
(config-if)#static-channel-group 5 | Map static channel-group to the interface |
(config)#interface xe5 | Enter the interface mode |
(config-if)#static-channel-group 5 | Map static channel-group to the interface |
(config-if)#exit | Exit the interface mode |
(config)#commit | Commit the transaction. |
(config)#mcec domain configuration | Enter the MLAG domain configuration mode |
(config-mcec-domain)#domain-address 1111.2222.3333 | Configure the MLAG domain address |
(config-mcec-domain)#domain-system-number 1 | Configure MLAG domain system number |
(config-mcec-domain)#intra-domain-link sa5 | Configure the intra domain link |
(config-mcec-domain)#exit | Exit from mcec domain mode. |
(config)#commit | Commit the transaction. |
TOR2
#configure terminal | Enter configure mode. |
(config)#hostname TOR2 | Configuring host name |
(config)#bridge 1 protocol provider-rstp edge | Create a PROVIDER-RSTP EDGE bridge |
(config)#vlan database | Enter vlan database mode. |
(config-vlan)#vlan 2 bridge 1 state enable | Configure VLAN for the bridge |
(config-vlan)# vlan 200 type service point-point bridge 1 state enable | Configure SVLAN for the bridge |
(config-vlan)#exit | Exit vlan database mode. |
(config)#cvlan registration table map1 bridge 1 | Configure cvlan-svlan mapping registration table for the bridge |
(config-cvlan-registration)#cvlan 2 svlan 200 | Map CVLAN to SVLAN |
(config-cvlan-registration)#exit | Exit the config-cvlan-registration mode |
(config)#interface mlag1 | Enter the interface mode |
(config-if)#switchport | Make the interface as switch port |
(config-if)#bridge-group 1 spanning-tree disable | Associate the interface to bridge and disable the spanning-tree. |
(config-if)# switchport mode customer-edge hybrid | Configure the mode as customer-edge hybrid |
(config-if)# switchport customer-edge hybrid allowed vlan all | Configure allowed VLAN all on the interface |
(config-if)#switchport customer-edge vlan registration map1 | Map the cvlan registration table into the MLAG interface |
(config-if)#mode active-standby | Configuring MLAG mode |
(config-if)#exit | Exit the interface mode |
(config)#interface mlag2 | Enter the interface mode |
(config-if)#switchport | Make the interface as switch port |
(config-if)#bridge-group 1 spanning-tree disable | Associate the interface to bridge and disable the spanning-tree. |
(config-if)# switchport mode provider-network | Configure the mode as provider-network |
(config-if)# switchport provider-network allowed vlan all | Configure allowed VLAN all on the interface |
(config-if)#mode active-standby | Configuring MLAG mode |
(config-if)#exit | Exit the interface mode |
(config)#interface sa1 | Enter the interface mode |
(config-if)#switchport | Make the interface as switch port |
(config-if)#mlag 1 | Map MLAG on SA interface |
(config-if)#exit | Exit the interface mode |
(config)#interface sa2 | Enter the interface mode |
(config-if)#switchport | Make the interface as switch port |
(config-if)#mlag 2 | Map MLAG on SA interface |
(config-if)#exit | Exit the interface mode |
(config)#interface xe11 | Enter the interface mode |
(config-if)# static-channel-group 2 | Map static channel to the interface |
(config-if)#exit | Exit the interface mode |
(config)#interface xe38 | Enter the interface mode |
(config-if)# static-channel-group 2 | Map static channel to the interface |
(config-if)#exit | Exit the interface mode |
(config)#interface xe2 | Enter the interface mode |
(config-if)# static-channel-group 1 | Create static channel group |
(config-if)#exit | Exit the interface mode |
(config)#interface xe22 | Enter the interface mode |
(config-if)# static-channel-group 1 | Create static channel group |
(config-if)#exit | Exit the interface mode |
(config)#interface sa5 | Enter the interface mode |
(config-if)#switchport | Make the interface as switch port |
(config-if)#exit | Exit the interface mode |
(config)#interface xe3 | Enter the interface mode |
(config-if)#static-channel-group 5 | Map static channel-group to the interface |
(config)#interface xe5 | Enter the interface mode |
(config-if)#static-channel-group 5 | Map static channel-group to the interface |
(config-if)#exit | Exit the interface mode |
(config)#commit | Commit the transaction. |
(config)#mcec domain configuration | Enter the MLAG domain configuration mode |
(config-mcec-domain)#domain-address 1111.2222.3333 | Configure the MLAG domain address |
(config-mcec-domain)#domain-system-number 2 | Configure MLAG domain system number |
(config-mcec-domain)#intra-domain-link sa5 | Configure the intera domain link |
(config-if)#exit | Exit the interface mode |
(config)#commit | Commit the transaction. |
LEAF
#configure terminal | Enter configure mode. |
(config)#hostname LEAF | Configuring host name |
(config)#bridge 1 protocol provider-rstp edge | Create a PROVIDER-RSTP EDGE bridge |
(config)#vlan database | Enter vlan database mode. |
(config-vlan)#vlan 2 bridge 1 state enable | Configure VLAN for the bridge |
(config-vlan)# vlan 200 type service point-point bridge 1 state enable | Configure SVLAN for the bridge |
(config-vlan)#exit | Exit vlan database mode. |
(config)#cvlan registration table map1 bridge 1 | Configure cvlan-svlan mapping registration table for the bridge |
(config-cvlan-registration)#cvlan 2 svlan 200 | Map CVLAN to SVLAN |
(config-cvlan-registration)#exit | Exit the config-cvlan-registration mode |
(config)#interface sa2 | Enter the interface mode |
(config-if)#swtichport | Make the interface a switch port |
(config-if)# bridge-group 1 spanning-tree disable | Disable the spanning-tree for the interface |
(config-if)#switchport mode provider-network | Configure the mode as provider-network |
(config-if)#)# switchport provider-network allowed vlan all | Configure allowed VLAN all on the interface |
(config-if)#exit | Exit the interface mode |
(config)#interface xe1 | Enter the interface mode |
(config-if)# static-channel-group 2 | Map the interface to the static channel-group |
(config-if)#exit | Exit the interface mode |
(config)#interface xe13 | Enter the interface mode |
(config-if)# static-channel-group 2 | Create static channel group |
(config-if)#exit | Exit the interface mode |
(config)#interface xe11 | Enter the interface mode |
(config-if)# static-channel-group 2 | Map the interface to the static channel-group |
(config-if)#exit | Exit the interface mode |
(config)#interface xe38 | Enter the interface mode |
(config-if)# static-channel-group 2 | Create static channel group |
(config-if)#exit | Exit the interface mode |
(config)#interface xe47 | Enter the interface mode |
(config-if)#switchport | Make the interface as switch port |
(config-if)# bridge-group 1 spanning-tree disable | Disable the spanning-tree for the interface |
(config-if)# switchport mode customer-edge hybrid | Configure the mode as customer-edge hybrid |
(config-if)# switchport customer-edge hybrid allowed vlan all | Configure allowed VLAN all on the interface |
(config-if)#switchport customer-edge vlan registration map1 | Map the cvlan registration table into the MLAG interface |
(config-if)#exit | Exit the interface mode |
(config)#commit | Commit the transaction. |
Validation
TOR1#show mlag 1 detail
MLAG-1
Mapped Aggregator : sa1
Admin Key : 16385
Oper Key : 16385
Physical properties Digest : d a6 26 2d fa 9a 5c 7b e6 15 79 c2 d5 9c 57 cc
Neigh Admin Key : 32769
Neigh Physical Digest : d a6 26 2d fa 9a 5c 7b e6 15 79 c2 d5 9c 57 cc
Info RCV State : Current
Info Periodic Time State : Standby
Total Bandwidth : 40g
Mlag Sync : IN_SYNC
Mode : Active-Standby
Current Mlag State : Active
TOR1#
TOR1#show mlag domain summary
------------------------------------
Domain Configuration
------------------------------------
Domain System Number : 1
Domain Address : 1111.2222.3333
Domain Priority : 32768
Intra Domain Interface : sa5
Domain Adjacency : UP
------------------------------------
MLAG Configuration
------------------------------------
MLAG-1
Mapped Aggregator : sa1
Physical properties Digest : d a6 26 2d fa 9a 5c 7b e6 15 79 c2 d5 9c 57 cc
Total Bandwidth : 40g
Mlag Sync : IN_SYNC
Mode : Active-Standby
Current Mlag State : Active
MLAG-2
Mapped Aggregator : sa2
Physical properties Digest : ae 56 a1 c5 b9 dc 46 a4 5d 97 dc 79 9c 6f a5 c8
Total Bandwidth : 40g
Mlag Sync : IN_SYNC
Mode : Active-Standby
Current Mlag State : Active
TOR1#
TOR1#show mlag domain detail
------------------------------------
Domain Configuration
------------------------------------
Domain System Number : 1
Domain Address : 1111.2222.3333
Domain Priority : 32768
Intra Domain Interface : sa5
Hello RCV State : Current
Hello Periodic Timer State : Slow Periodic
Domain Sync : IN_SYNC
Neigh Domain Sync : IN_SYNC
Domain Adjacency : UP
------------------------------------
MLAG Configuration
------------------------------------
MLAG-1
Mapped Aggregator : sa1
Admin Key : 16385
Oper Key : 16385
Physical properties Digest : d a6 26 2d fa 9a 5c 7b e6 15 79 c2 d5 9c 57 cc
Neigh Admin Key : 32769
Neigh Physical Digest : d a6 26 2d fa 9a 5c 7b e6 15 79 c2 d5 9c 57 cc
Info RCV State : Current
Info Periodic Time State : Standby
Total Bandwidth : 40g
Mlag Sync : IN_SYNC
Mode : Active-Standby
Current Mlag State : Active
MLAG-2
Mapped Aggregator : sa2
Admin Key : 16386
Oper Key : 16386
Physical properties Digest : ae 56 a1 c5 b9 dc 46 a4 5d 97 dc 79 9c 6f a5 c8
Neigh Admin Key : 32770
Neigh Physical Digest : ae 56 a1 c5 b9 dc 46 a4 5d 97 dc 79 9c 6f a5 c8
Info RCV State : Current
Info Periodic Time State : Standby
Total Bandwidth : 40g
Mlag Sync : IN_SYNC
Mode : Active-Standby
Current Mlag State : Active
TOR1#
ARP ACL Configuration
Topology
ARP ACL configuration with MC LAG
TOR1
TOR1(config)#bridge 1 protocol provider-rstp edge | Create provider rstp bridge |
TOR1(config)#vlan database | Enter vlan database mode. |
TOR1(config-vlan)#vlan 2-3990 type customer bridge 1 state enable | Enable customer vlan for bridge |
TOR1(config-vlan)#vlan 2-3990 type service point-point bridge 1 state enable | Enable service vlan for bridge |
TOR1(config-vlan)#exit | Exit vlan database mode. |
TOR1(config)#cvlan registration table map1 bridge 1 | Create registration table |
TOR1(config-cvlan-registration)#cvlan 2-3990 svlan 3990 | Map cvlan to svlan |
TOR1(config-cvlan-registration)#exit | Exit the cvlan registration table mode |
TOR1(config)#interface mlag1 | Enter mlag interface |
TOR1(config-if)#switchport | Configure interface as switchport |
TOR1(config-if)#bridge-group 1 spanning-tree disable | Associate the interface to bridge and disable the spanning-tree. |
TOR1(config-if)# switchport mode customer-edge hybrid | Configure the mode as customer-edge hybrid |
TOR1(config-if)# switchport customer-edge hybrid allowed vlan all | Configure allowed VLAN all on the interface |
TOR1(config-if)#switchport customer-edge vlan registration map1 | Map the cvlan registration table into the MLAG interface |
TOR1(config-if)#exit | Exit interface mode. |
TOR1(config)#interface mlag2 | Enter mlag interface mode. |
TOR1(config-if)#switchport | Configure interface as switchport |
TOR1(config-if)#bridge-group 1 spanning-tree disable | Associate the interface to bridge and disable the spanning-tree. |
TOR1(config-if)#switchport mode provider- network | Set the switching characteristics of this interface to provider network |
TOR1(config-if)#switchport provider-network allowed vlan all | Set the switching characteristics of this interface to provider network and allow all vlan |
TOR1(config-if)#exit | Exit the interface mode |
TOR1(config)#interface po1 | Enter dynamic lag interface |
TOR1(config-if)#switchport | Configure interface as switchport |
TOR1(config-if)#mlag 1 | Enable mlag group number |
TOR1(config-if)#exit | Exit the interface mode |
TOR1(config-if)#interface po2 | Enter dynamic lag interface |
TOR1(config-if)#switchport | Configure interface as switchport |
TOR1(config-if)#mlag 2 | Enable mlag group number |
TOR1(config-if)#exit | Exit the interface mode |
TOR1(config)#interface po3 | Enter dynamic lag interface |
TOR1(config-if)#switchport | Configure interface as switchport |
TOR1(config-if)#exit | Exit the interface mode |
TOR1(config)#interface xe2 | Enter interface mode |
TOR1(config-if)#channel-group 3 mode active | Make part of channel group 3 |
TOR1(config-if)#exit | Exit the interface mode |
TOR1(config)#interface xe3 | Enter interface mode |
TOR1(config-if)#channel-group 1 mode active | Add this interface to channel group 1 and enable link aggregation so that it can be selected for aggregation by the local system |
TOR1(config-if)#exit | Exit the interface mode |
TOR1(config-if)#interface xe49/1 | Enter interface mode |
TOR1(config-if)#channel-group 2 mode active | Enable channel-group 2 |
TOR1(config-if)#exit | Exit the interface mode |
TOR1(config)#commit | Commit the transaction. |
TOR1(config)#mcec domain configuration | Enter MCEC mode |
TOR1(config-mcec-domain)#domain-address 2222.3333.4444 | Domain address for the mlag domain |
TOR1(config-mcec-domain)#domain-system-number 1 | Number to identify the node in a domain |
TOR1(config-mcec-domain)#intra-domain-link po3 | Intra domain line between mlag domain |
TOR1(config-mcec-domain)#exit | Exit mcec domain mode. |
TOR1(config)#commit | Commit the transaction. |
TOR1(config)#hardware-profile filter ingress-arp enable | Enable globally hardware profile for arp |
TOR1(config)#arp access-list cep | Create access list with name as cep |
TOR1(config-arp-acl)# 30 permit request ip any mac host 0000.2A6C.668D vlan 3990 inner-vlan 2 | Create permit rule for particular arp request |
TOR1(config-arp-acl)# 40 permit response ip any any mac host 0000.2A6C.668D host 0000.2A6C.7202 vlan 3990 inner-vlan 2 | Create permit rule for particular arp response |
TOR1(config-arp-acl)#exit | Exit ARP ACL mode. |
TOR1(config)#arp access-list pnp | Create access list with name as pnp |
TOR1(config-arp-acl)#20 permit request ip any mac host 0000.2A6C.7202 vlan 3990 inner-vlan 2 | Create permit rule for particular arp request |
TOR1(config-arp-acl)#30 permit response ip any any mac host 0000.2A6C.7202 host 0000.2A6C.668D vlan 3990 inner-vlan 2 | Create permit rule for particular arp response |
TOR1(config-arp-acl)#exit | Exit ARP ACL mode. |
TOR1(config)#interface mlag1 | Enter mlag1 interface |
TOR1(config-if)#arp access-group cep in | Attach rule with access-group cep |
TOR1(config-if)#interface mlag2 | Enter mlag2 interface |
TOR1(config-if)#arp access-group pnp in | Attach rule with access-group pnp |
TOR1(config-if)#exit | Exit interface mode. |
TOR1(config)#commit | Commit the transaction. |
TOR2
TOR2(config)#bridge 1 protocol provider-rstp edge | Create provider rstp bridge |
TOR2(config)#vlan database | Enter vlan database mode. |
TOR2(config-vlan)#vlan 2-3990 type customer bridge 1 state enable | Enable customer vlan for bridge |
TOR2(config-vlan)#vlan 2-3990 type service point-point bridge 1 state enable | Enable service vlan for bridge |
TOR2(config-vlan)#exit | Exit vlan database mode. |
TOR2(config)#cvlan registration table map1 bridge 1 | Create registration table |
TOR2(config-cvlan-registration)#cvlan 2-3990 svlan 3990 | Map cvlan to svlan |
TOR2(config-cvlan-registration)#exit | Exit the cvlan registration table mode |
TOR2(config)#interface mlag1 | Enter mlag interface mode. |
TOR2(config-if)#switchport | Configure interface as a switch. |
TOR2(config-if)#bridge-group 1 spanning-tree disable | Associate the interface with bridge group 1and disabling spanning-tree |
TOR2(config-if)#switchport mode customer-edge hybrid | Set the switching characteristics of this interface to customer-edge hybrid |
TOR2(config-if)#switchport customer-edge hybrid allowed vlan all | Set the switching characteristics of this interface to customer-edge hybrid and allow vlan all |
TOR2(config-if)#switchport customer-edge vlan registration map1 | Configure the registration table mapping on mlag interface |
TOR2(config-if)#exit | Exit the interface mode |
TOR2(config)#interface mlag2 | Enter mlag interface |
TOR2(config-if)#switchport | Configure interface as switchport |
TOR2(config-if)#bridge-group 1 | Associate the interface with bridge group 1 |
TOR2(config-if)#switchport mode provider- network | Set the switching characteristics of this interface to provider network |
TOR2(config-if)#switchport provider-network allowed vlan all | Set the switching characteristics of this interface to provider network and allow all vlan |
TOR2(config-if)#exit | Exit the interface mode |
TOR2(config)#interface po1 | Enter dynamic lag interface |
TOR2(config-if)#switchport | Configure interface as switchport |
TOR2(config-if)#mlag 1 | Enable mlag group number |
TOR2(config-if)#exit | Exit the interface mode |
TOR2(config)#interface po2 | Enter dynamic lag interface |
TOR2(config-if)#switchport | Configure interface as switchport |
TOR2(config-if)#mlag 2 | Enable mlag group number |
TOR2(config-if)#exit | Exit the interface mode |
TOR2(config)#interface po3 | Enter dynamic lag interface |
TOR2(config-if)#switchport | Configure interface as switchport |
TOR2(config-if)#exit | Exit the interface mode |
TOR2(config)#interface xe2 | Enter interface mode |
TOR2(config-if)#channel-group 3 mode active | Make part of channel group 3 |
TOR2(config-if)#interface xe3 | Enter interface mode |
TOR2(config-if)#channel-group 1 mode active | Add this interface to channel group 1 and enable link aggregation so that it can be selected for aggregation by the local system |
TOR2(config-if)#exit | Exit the interface mode |
TOR2(config)#Interface xe49/1 | Enter interface mode |
TOR2(config-if)#channel-group 2 mode active | Enable channel-group 2 |
TOR2(config-if)#exit | Exit interface mode. |
TOR2(config)#commit | Commit the transaction. |
TOR2(config)#mcec domain configuration | Configure mcec domain information |
TOR2(config-mcec-domain)#domain-address 2222.3333.4444 | Domain address for the mlag domain |
TOR2(config-mcec-domain)#domain-system-number 2 | Number to identify the node in a domain |
TOR2(config-mcec-domain)#intra-domain-link po3 | Intra domain line between mlag domain |
TOR2(config-mcec-domain)#exit | Exit mcec domain mode. |
TOR2(config)#commit | Commit the transaction. |
TOR2(config)#hardware-profile filter ingress-arp enable | Enable globally hardware profile for arp |
TOR2(config)#arp access-list cep | Create access list with name as cep |
TOR2(config-arp-acl)# 30 permit request ip any mac host 0000.2A6C.668D vlan 3990 inner-vlan 2 | Create permit rule for particular arp request |
TOR2(config-arp-acl)# 40 permit response ip any any mac host 0000.2A6C.668D host 0000.2A6C.7202 vlan 3990 inner-vlan 2 | Create permit rule for particular arp response |
TOR2(config-arp-acl)#exit | Exit ARP ACL mode. |
TOR2(config)#arp access-list pnp | Create access list with name as pnp |
TOR2(config-arp-acl)#20 permit request ip any mac host 0000.2A6C.7202 vlan 3990 inner-vlan 2 | Create permit rule for particular arp request |
TOR2(config-arp-acl)#30 permit response ip any any mac host 0000.2A6C.7202 host 0000.2A6C.668D vlan 3990 inner-vlan 2 | Create permit rule for particular arp response |
TOR2(config-arp-acl)#exit | Exit ARP ACL mode. |
TOR2(config-if)#interface mlag1 | Enter mlag1 interface |
TOR2(config-if)#arp access-group cep in | Attach rule with access-group cep |
TOR2(config-if)#interface mlag2 | Enter mlag2 interface |
TOR2(config-if)#arp access-group pnp in | Attach rule with access-group pnp |
TOR2(config-if)#exit | Exit interface mode. |
TOR2(config)#commit | Commit the transaction. |
SW1
SW1(config)#bridge 1 protocol rstp vlan-bridge | Configure the rstp vlan bridge |
SW1(config)#vlan database | Enter vlan database mode. |
SW1(config-vlan)#vlan 2-3990 type customer bridge 1 state enable | Enable customer vlan for bridge |
SW1(config-vlan)#exit | Exit vlan database mode. |
SW1(config)#interface po1 | Enter dynamic lag interface |
SW1(config-if)#switchport | Configure interface as switchport |
SW1(config-if)#bridge-group 1 spanning-tree disable | Associate the interface with bridge group 1and disabling spanning-tree |
SW1(config-if)#switchport mode hybrid | Set the switching characteristics of this interface hybrid |
SW1(config-if)#switchport hybrid allowed vlan all | Set the switching characteristics of this interface hybrid and allowing all vlan |
SW1(config-if)#exit | Exit the interface mode |
SW1(config)#interface xe1 | Enter interface mode |
SW1(config-if)#channel-group 1 mode active | Add this interface to channel group 1 and enable link aggregation so that it can be selected for aggregation by the local system. |
SW1(config-if)#exit | Exit the interface mode |
SW1(config)#interface xe2 | Enter interface mode |
SW1(config-if)#channel-group 1 mode active | Add this interface to channel group 1 and enable link aggregation so that it can be selected for aggregation by the local system. |
SW1(config-if)#exit | Exit the interface mode |
SW1(config)#interface xe3 | Enter interface mode |
SW1(config-if)#switchport | Configure interface as switchport |
SW1(config-if)#bridge-group 1 spanning-tree disable | Associate the interface with bridge group 1and disabling spanning-tree |
SW1(config-if)#switchport mode hybrid | Set the switching characteristics of this interface hybrid |
SW1(config-if)#switchport hybrid allowed vlan all | Set the switching characteristics of this interface hybrid and allowing all vlan |
SW1(config-if)#exit | Exit the interface mode |
SW1(config)#commit | Commit the transaction. |
LEAF
Leaf(config)#bridge 1 protocol provider-rstp edge | Configure the rstp vlan bridge |
Leaf(config)#vlan database | Enter vlan database |
Leaf(config-vlan)#vlan 2-3990 type customer bridge 1 state enable | Enable customer vlan for bridge |
Leaf(config)#vlan 2-3990 type service point-point bridge 1 state enable | Enable service vlan for bridge |
Leaf(config-vlan)#exit | Exit vlan database mode. |
Leaf(config)#cvlan registration table map1 bridge 1 | Create registration table |
Leaf(config-cvlan-registration)#cvlan 2-3990 svlan 3990 | Map cvlan to svlan |
Leaf(config-cvlan-registration)#exit | Exit the cvlan registration table mode |
Leaf(config)#interface po2 | Enter interface mode |
Leaf(config-if)#switchport | Configure interface as switchport |
Leaf(config-if)#bridge-group 1 spanning-tree disable | Associate the interface with bridge group 1and disabling spanning-tree |
Leaf(config-if)#switchport mode provider-network | Set the switching characteristics of this interface provider network |
Leaf(config-if)#switchport provider-network allowed vlan all | Set the switching characteristics of this interface provider and allowing all vlan |
Leaf(config-if)#exit | Exit the interface mode |
Leaf(config)#interface xe1 | Enter interface mode |
Leaf(config-if)#channel-group 2 mode active | Add this interface to channel group 2 and enable link aggregation so that it can be selected for aggregation by the local system. |
Leaf(config-if)#exit | Exit the interface mode |
Leaf(config)#interface xe2 | Enter interface mode |
Leaf(config-if)#channel-group 2 mode active | Add this interface to channel group 2 and enable link aggregation so that it can be selected for aggregation by the local system. |
Leaf(config-if)#exit | Exit the interface mode |
Leaf(config)#Interface xe3 | Enter interface mode |
Leaf(config-if)#switchport | Configure interface as switchport |
Leaf(config-if)#bridge-group 1 spanning-tree disable | Associate the interface with bridge group 1and disabling spanning-tree |
Leaf(config-if)#switchport mode customer-edge hybrid | Set the switching characteristics of this interface to customer-edge hybrid |
Leaf(config-if)#switchport customer-edge hybrid allowed vlan all | Set the switching characteristics of this interface to customer-edge hybrid and allow vlan all |
Leaf(config-if)#switchport customer-edge vlan registration map1 | Configure the registration table mapping on mlag interface |
Leaf(config-if)#exit | Exit the interface mode |
Leaf(config)#commit | Commit the transaction. |
Validation
TOR1#show access-lists
ARP access list cep
30 permit request ip any mac host 0000.2A6C.668D vlan 3990 inner-vlan 2
40 permit response ip any any mac host 0000.2A6C.668D host 0000.2A6C.7202 vlan 3990 inner-vlan 2
default deny-all
ARP access list pnp
20 permit request ip any mac host 0000.2A6C.7202 vlan 3990 inner-vlan 2 [match=1]
30 permit response ip any any mac host 0000.2A6C.7202 host 0000.2A6C.668D vlan 3990 inner-vlan 2 [match=1]
default deny-all log
TOR2#show access-lists
ARP access list cep
30 permit request ip any mac host 0000.2A6C.668D vlan 3990 inner-vlan 2 [match=1]
40 permit response ip any any mac host 0000.2A6C.668D host 0000.2A6C.7202 vlan 3990 inner-vlan 2 [match=1]
default deny-all log
ARP access list pnp
20 permit request ip any mac host 0000.2A6C.7202 vlan 3990 inner-vlan 2
30 permit response ip any any mac host 0000.2A6C.7202 host 0000.2A6C.668D vlan 3990 inner-vlan 2
default deny-all
Disabling STP for MLAG
The command no bridge 1 provider-rstp enable bridge-forward is used to disable the spanning tree globally.
Enabling Provider RSTP
OcNOS#configure terminal | Enter Configure mode. |
OcNOS(config)# bridge 1 protocol provider-rstp edge | Configure Provider-rstp edge bridge. |
OcNOS(config)# interface xe13/2 | Configure interface xe13/2\ |
OcNOS(config-if)# switchport | Configure the interface as switchport |
OcNOS(config-if)# bridge-group 1 | Assign the above created bridge to this port. |
OcNOS(config-vrf)#exit | Exit from interface mode to config mode |
OcNOS(config)# interface po1 | Configure interface po1 |
OcNOS(config-if)# switchport | Configure the interface as switchport |
OcNOS(config-if)# bridge-group 1 | Assign the above created bridge to this port. |
OcNOS(config-vrf)#exit | Exit from interface mode to config mode |
OcNOS(config)# interface mlag2 | Configure interface mlag1 |
OcNOS(config-if)# switchport | Configure the interface as switchport |
OcNOS(config-if)# bridge-group 1 spanning-tree disable | Assign the above created bridge to this port and disable the spanning tree. |
OcNOS(config-vrf)#exit | Exit from interface mode to config mode |
OcNOS(config)#commit | Commit the transaction. |
Validation
OcNOS#show spanning-tree
% 1: Bridge up - Spanning Tree Enabled - topology change detected
% 1: Root Path Cost 0 - Root Port 0 - Bridge Priority 32768
% 1: Forward Delay 15 - Hello Time 2 - Max Age 20 - Transmit Hold Count 6
% 1: Root Id 8000ecf4bbfc6928
% 1: Bridge Id 8000ecf4bbfc6928
% 1: last topology change Tue Jul 30 06:47:37 2019
% 1: 2 topology change(s) - last topology change Tue Jul 30 06:47:37 2019
% 1: portfast bpdu-filter disabled
% 1: portfast bpdu-guard disabled
% xe13/2: Port Number 942 - Ifindex 5038 - Port Id 0x83ae - Role Designated - State Forwarding
% xe13/2: Designated Path Cost 0
% xe13/2: Configured Path Cost 2000 - Add type Explicit ref count 1
% xe13/2: Designated Port Id 0x83ae - Priority 128 -
% xe13/2: Root 8000ecf4bbfc6928
% xe13/2: Designated Bridge 8000ecf4bbfc6928
% xe13/2: Message Age 0 - Max Age 20
% xe13/2: Hello Time 2 - Forward Delay 15
% xe13/2: Forward Timer 0 - Msg Age Timer 0 - Hello Timer 0 - topo change timer 0
% xe13/2: forward-transitions 3
% xe13/2: Version Rapid Spanning Tree Protocol - Receive None - Send RSTP
% xe13/2: No portfast configured - Current portfast off
% xe13/2: bpdu-guard default - Current bpdu-guard off
% xe13/2: bpdu-filter default - Current bpdu-filter off
% xe13/2: no root guard configured - Current root guard off
% xe13/2: Configured Link Type point-to-point - Current point-to-point
% xe13/2: No auto-edge configured - Current port Auto Edge off
%
% po1: Port Number 1697 - Ifindex 100001 - Port Id 0x86a1 - Role Designated - State Forwarding
% po1: Designated Path Cost 0
% po1: Configured Path Cost 2000 - Add type Explicit ref count 1
% po1: Designated Port Id 0x86a1 - Priority 128 -
% po1: Root 8000ecf4bbfc6928
% po1: Designated Bridge 8000ecf4bbfc6928
% po1: Message Age 0 - Max Age 20
% po1: Hello Time 2 - Forward Delay 15
% po1: Forward Timer 0 - Msg Age Timer 0 - Hello Timer 0 - topo change timer 0
% po1: forward-transitions 1
% po1: Version Rapid Spanning Tree Protocol - Receive None - Send RSTP
% po1: No portfast configured - Current portfast off
% po1: bpdu-guard default - Current bpdu-guard off
% po1: bpdu-filter default - Current bpdu-filter off
% po1: no root guard configured - Current root guard off
% po1: Configured Link Type point-to-point - Current point-to-point
% po1: No auto-edge configured - Current port Auto Edge off
%
% mlag2: Port Number 2690 - Ifindex 400002 - Port Id 0x8a82 - Role Disabled - State Forwarding
% mlag2: Designated Path Cost 0
% mlag2: Configured Path Cost 20000000 - Add type Explicit ref count 1
% mlag2: Designated Port Id 0x0 - Priority 128 -
% mlag2: Message Age 0 - Max Age 0
% mlag2: Hello Time 0 - Forward Delay 0
% mlag2: Forward Timer 0 - Msg Age Timer 0 - Hello Timer 0 - topo change timer 0
% mlag2: forward-transitions 1
% mlag2: Version Rapid Spanning Tree Protocol - Receive None - Send RSTP
% mlag2: No portfast configured - Current portfast off
% mlag2: bpdu-guard default - Current bpdu-guard off
% mlag2: bpdu-filter default - Current bpdu-filter off
% mlag2: no root guard configured - Current root guard off
% mlag2: Configured Link Type point-to-point - Current point-to-point
% mlag2: No auto-edge configured - Current port Auto Edge off
%
Disabling RSTP Globally
OcNOS#configure terminal | Enter Configure mode. |
OcNOS(config)# no bridge 1 rapid-spanning-tree enable bridge-forward | Disable spanning tree globally for Provider-RSTP and keeping the ports in Forwarding state. |
OcNOS(config)# interface mlag1 | Configure interface mlag1 |
OcNOS(config-if)# switchport | Configure the interface as switchport |
OcNOS(config-if)# bridge-group 1 | Assign the above created bridge to this port. |
OcNOS(config-vrf)#exit | Exit from interface mode to config mode |
OcNOS(config)#commit | Commit the transaction. |
Validation
OcNOS#sh run int mlag2-
!
interface mlag2
switchport
bridge-group 1 spanning-tree disable
switchport mode provider-network
!
OcNOS#sh run int mlag1
!
interface mlag1
switchport
bridge-group 1
switchport mode provider-network
!
OcNOS#
OcNOS#sh spanning-tree
% 1: Bridge up - Spanning Tree Disabled - topology change detected
% 1: Root Path Cost 0 - Root Port 0 - Bridge Priority 32768
% 1: Forward Delay 15 - Hello Time 2 - Max Age 20 - Transmit Hold Count 6
% 1: Root Id 8000000000000000
% 1: Bridge Id 8000000000000000
% 1: 2 topology change(s) - last topology change Tue Jul 30 06:47:37 2019
% 1: portfast bpdu-filter disabled
% 1: portfast bpdu-guard disabled
% xe13/2: Port Number 942 - Ifindex 5038 - Port Id 0x83ae - Role Disabled - State Forwarding
% xe13/2: Designated Path Cost 0
% xe13/2: Configured Path Cost 2000 - Add type Explicit ref count 1
% xe13/2: Designated Port Id 0x83ae - Priority 128 -
% xe13/2: Message Age 0 - Max Age 20
% xe13/2: Hello Time 2 - Forward Delay 15
% xe13/2: Forward Timer 0 - Msg Age Timer 0 - Hello Timer 0 - topo change timer 0
% xe13/2: forward-transitions 4
% xe13/2: Version Rapid Spanning Tree Protocol - Receive None - Send RSTP
% xe13/2: No portfast configured - Current portfast off
% xe13/2: bpdu-guard default - Current bpdu-guard off
% xe13/2: bpdu-filter default - Current bpdu-filter off
% xe13/2: no root guard configured - Current root guard off
% xe13/2: Configured Link Type point-to-point - Current point-to-point
% xe13/2: No auto-edge configured - Current port Auto Edge off
%
% po1: Port Number 1697 - Ifindex 100001 - Port Id 0x86a1 - Role Disabled - State Forwarding
% po1: Designated Path Cost 0
% po1: Configured Path Cost 2000 - Add type Explicit ref count 1
% po1: Designated Port Id 0x86a1 - Priority 128 -
% po1: Message Age 0 - Max Age 20
% po1: Hello Time 2 - Forward Delay 15
% po1: Forward Timer 0 - Msg Age Timer 0 - Hello Timer 0 - topo change timer 0
% po1: forward-transitions 2
% po1: Version Rapid Spanning Tree Protocol - Receive None - Send RSTP
% po1: No portfast configured - Current portfast off
% po1: bpdu-guard default - Current bpdu-guard off
% po1: bpdu-filter default - Current bpdu-filter off
% po1: no root guard configured - Current root guard off
% po1: Configured Link Type point-to-point - Current point-to-point
% po1: No auto-edge configured - Current port Auto Edge off
%
% mlag1: Port Number 2689 - Ifindex 400001 - Port Id 0x8a81 - Role Disabled - State Forwarding
% mlag1: Designated Path Cost 0
% mlag1: Configured Path Cost 20000000 - Add type Explicit ref count 1
% mlag1: Designated Port Id 0x0 - Priority 128 -
% mlag1: Message Age 0 - Max Age 0
% mlag1: Hello Time 0 - Forward Delay 0
% mlag1: Forward Timer 0 - Msg Age Timer 0 - Hello Timer 0 - topo change timer 0
% mlag1: forward-transitions 2
% mlag1: Version Rapid Spanning Tree Protocol - Receive None - Send RSTP
% mlag1: No portfast configured - Current portfast off
% mlag1: bpdu-guard default - Current bpdu-guard off
% mlag1: bpdu-filter default - Current bpdu-filter off
% mlag1: no root guard configured - Current root guard off
% mlag1: Configured Link Type point-to-point - Current point-to-point
% mlag1: No auto-edge configured - Current port Auto Edge off
%
% mlag2: Port Number 2690 - Ifindex 400002 - Port Id 0x8a82 - Role Disabled - State Forwarding
% mlag2: Designated Path Cost 0
% mlag2: Configured Path Cost 20000000 - Add type Explicit ref count 1
% mlag2: Designated Port Id 0x0 - Priority 128 -
% mlag2: Message Age 0 - Max Age 0
% mlag2: Hello Time 0 - Forward Delay 0
% mlag2: Forward Timer 0 - Msg Age Timer 0 - Hello Timer 0 - topo change timer 0
% mlag2: forward-transitions 2
% mlag2: Version Rapid Spanning Tree Protocol - Receive None - Send RSTP
% mlag2: No portfast configured - Current portfast off
% mlag2: bpdu-guard default - Current bpdu-guard off
% mlag2: bpdu-filter default - Current bpdu-filter off
% mlag2: no root guard configured - Current root guard off
% mlag2: Configured Link Type point-to-point - Current point-to-point
% mlag2: No auto-edge configured - Current port Auto Edge off
%
Port-isolation for MLAG
The feature is to prohibit communication between Isolated ports across MLAG switches. Protected port can communicate with an unprotected port and vice-versa. The use of protected ports ensures that there is no exchange of unicast, broadcast, or multicast data traffic between ports on the same switch so that one neighbor does not see the traffic generated by another neighbor.
Topology
Static MLAG Topology
L2SW
#configure terminal | Enter configure mode.(config)#bridge 1 protocol rstp vlan-bridge |
(config)#bridge 1 protocol rstp vlan-bridge | Create RSTP bridge 1. |
(config)#vlan database | Enter VLAN database mode. |
(config-vlan)#vlan 2 bridge 1 state enable | Create VLAN 2. |
(config-vlan)#exit | Exit vlan database mode. |
(config)#interface po1 | Enter interface mode. |
(config-if)#switchport | Configure the interface as Layer 2 |
(config-if)#bridge-group 1 | Associate the interface with bridge group 1. |
(config-if)#switchport mode trunk | Set the switching characteristics of this interface to trunk mode. |
(config-if)#switchport trunk allowed vlan all | Enable all VLAN identifiers on this interface. |
(config-if)#exit | Exit interface mode. |
(config)#interface xe2 | Enter interface mode. |
(config-if)#channel-group 1 mode active | Add this interface to channel group 1 and enable link aggregation so that it can be selected for aggregation by the local system. |
(config-if)#exit | Exit interface mode. |
(config)#interface xe9 | Enter interface mode. |
(config-if)#channel-group 1 mode active | Add this interface to channel group 1 and enable link aggregation so that it can be selected for aggregation by the local system. |
(config-if)#exit | Exit interface mode. |
(config)#interface xe11 | Enter interface mode. |
(config-if)#channel-group 1 mode active | Add this interface to channel group 1 and enable link aggregation so that it can be selected for aggregation by the local system. |
(config-if)#exit | Exit interface mode. |
(config)#interface xe22 | Enter interface mode. |
(config-if)#channel-group 1 mode active | Add this interface to channel group 1 and enable link aggregation so that it can be selected for aggregation by the local system. |
(config-if)#exit | Exit interface mode. |
(config)#commit | Commit the transaction. |
TOR1
#configure terminal | Enter configure mode. |
(config)#bridge 1 protocol rstp vlan-bridge | Create RSTP bridge 1. |
(config)#vlan database | Enter vlan database mode. |
(config-vlan)#vlan 2 bridge 1 state enable | Create VLAN 2. |
(config-vlan)#exit | Exit vlan database mode. |
(config)#hardware-profile filter port-isolation enable | Enable the hardware profile filter globally |
(config)#interface mlag1 | Enter interface mode. |
(config-if)#switchport | Configure the interface as Layer 2 |
(config-if)#bridge-group 1 | Associate the interface with bridge group 1. |
(config-if)#switchport mode trunk | Set the switching characteristics of this interface to trunk mode. |
(config-if)#switchport trunk allowed vlan all | Enable all VLAN identifiers on this interface. |
(config-if)#switchport protected promiscuous | Configure interface as promiscuous port |
(config-if)#exit | Exit interface mode. |
(config)#interface mlag2 | Enter interface mode. |
(config-if)#switchport | Configure the interface as Layer 2 |
(config-if)#bridge-group 1 | Associate the interface with bridge group 1. |
(config-if)#switchport mode trunk | Set the switching characteristics of this interface to trunk mode. |
(config-if)#switchport trunk allowed vlan all | Enable all VLAN identifiers on this interface. |
(config-if)#switchport protected isolated | Configure interface as isolated port |
(config-if)#exit | Exit interface mode. |
(config)#interface po1 | Enter interface mode. |
(config-if)#switchport | Configure the interface as Layer 2 |
(config-if)#mlag 1 | Enabling Mlag group number |
(config-if)#exit | Exit interface mode. |
(config)#interface po2 | Enter interface mode. |
(config-if)#switchport | Configure the interface as Layer 2 |
(config-if)#mlag 2 | enabling Mlag group number |
(config-if)#exit | Exit interface mode. |
(config)#interface po3 | Enter interface mode. |
(config-if)#switchport | Configure the interface as Layer 2 |
(config-if)#exit | Exit interface mode. |
(config)#interface xe9 | Enter interface mode. |
(config-if)#channel-group 1 mode active | Add this interface to channel group 1 and enable link aggregation so that it can be selected for aggregation by the local system. |
(config-if)#exit | Exit interface mode. |
(config)#interface xe11 | Enter interface mode. |
(config-if)#channel-group 1 mode active | Add this interface to channel group 1 and enable link aggregation so that it can be selected for aggregation by the local system. |
(config-if)#exit | Exit interface mode. |
(config)#interface xe1 | Enter interface mode. |
(config-if)#channel-group 2 mode active | Add this interface to channel group 2 and enable link aggregation so that it can be selected for aggregation by the local system. |
(config-if)#exit | Exit interface mode. |
(config)#interface xe13 | Enter interface mode. |
(config-if)#channel-group 2 mode active | Add this interface to channel group 2 and enable link aggregation so that it can be selected for aggregation by the local system. |
(config-if)#exit | Exit interface mode. |
(config)#interface xe49 | Enter interface mode. |
(config-if)#channel-group 3 mode active | Add this interface to channel group 3 and enable link aggregation so that it can be selected for aggregation by the local system. |
(config-if)#exit | Exit interface mode. |
(cosnfig)#commit | Commit the transaction. |
(config)#mcec domain configuration | Entering MCEC mode |
(config-mcec-domain)#domain-address 1111.2222.3333 | Domain address for the mlag domain |
(config-mcec-domain)# domain-system-number 1 | Number to identify the node in a domain |
(config-mcec-domain)# intra-domain link po3 | Intra domain line between mlag domain |
(config-mcec-domain)#idl-higig | Enable the idl-higig on mlag idl |
(config-mcec-domain)#exit | Exit MCEC mode |
(config)#commit | Commit the transaction. |
TOR2
#configure terminal | Enter configure mode. |
(config)#bridge 1 protocol rstp vlan-bridge | Create RSTP bridge 1. |
(config)#vlan database | Enter vlan database mode. |
(config-vlan)#vlan 2 bridge 1 state enable | Create VLAN 2. |
(config-vlan)#exit | Exit vlan database mode. |
(config)#hardware-profile filter port-isolation enable | Enable the hardware profile filter globally |
(config)#interface mlag1 | Enter interface mode. |
(config-if)#switchport | Configure the interface as Layer 2 |
(config-if)#bridge-group 1 | Associate the interface with bridge group 1. |
(config-if)#switchport mode trunk | Set the switching characteristics of this interface to trunk mode. |
(config-if)#switchport trunk allowed vlan all | Enable all VLAN identifiers on this interface. |
(config-if)#switchport protected promiscuous | Configure interface as promiscuous port |
(config-if)#exit | Exit interface mode. |
(config)#interface mlag2 | Enter interface mode. |
(config-if)#switchport | Configure the interface as Layer 2 |
(config-if)#bridge-group 1 | Associate the interface with bridge group 1. |
(config-if)#switchport mode trunk | Set the switching characteristics of this interface to trunk mode. |
(config-if)#switchport trunk allowed vlan all | Enable all VLAN identifiers on this interface. |
(config-if)#switchport protected isolated | Configure interface as isolated port |
(config-if)#exit | Exit interface mode. |
(config)#interface po1 | Enter interface mode. |
(config-if)#switchport | Configure the interface as Layer 2 |
(config-if)#mlag 1 | Enabling Mlag group number |
(config-if)#exit | Exit interface mode. |
(config)#interface po2 | Enter interface mode. |
(config-if)#switchport | Configure the interface as Layer 2 |
(config-if)#mlag 2 | Enabling Mlag group number |
(config-if)#exit | Exit interface mode. |
(config)#interface po3 | Enter interface mode. |
(config-if)#switchport | Configure the interface as Layer 2 |
(config-if)#exit | Exit interface mode. |
(config)#interface xe2 | Enter interface mode. |
(config-if)#channel-group 1 mode active | Add this interface to channel group 1 and enable link aggregation so that it can be selected for aggregation by the local system. |
(config-if)#exit | Exit interface mode. |
(config)#interface xe22 | Enter interface mode. |
(config-if)#channel-group 1 mode active | Add this interface to channel group 1 and enable link aggregation so that it can be selected for aggregation by the local system. |
(config-if)#exit | Exit interface mode. |
(config)#interface xe11 | Enter interface mode. |
(config-if)#channel-group 2 mode active | Add this interface to channel group 2 and enable link aggregation so that it can be selected for aggregation by the local system. |
(config-if)#exit | Exit interface mode. |
(config)#interface xe38 | Enter interface mode. |
(config-if)#channel-group 2 mode active | Add this interface to channel group 2 and enable link aggregation so that it can be selected for aggregation by the local system. |
(config-if)#exit | Exit interface mode. |
(config)#interface xe49 | Enter interface mode. |
(config-if)#channel-group 3 mode active | Add this interface to channel group 3 and enable link aggregation so that it can be selected for aggregation by the local system. |
(config-if)#exit | Exit interface mode. |
(config)#commit | Commit the transaction. |
(config)#mcec domain configuration | Entering MCEC mode |
(config-mcec-domain)#domain-address 1111.2222.3333 | Domain address for the mlag domain |
(config-mcec-domain)# domain-system-number 2 | Number to identify the node in a domain |
(config-mcec-domain)# intra-domain link po3 | Intra domain line between mlag domain |
(config-mcec-domain)#idl-higig | Enable the idl-higig on mlag idl. |
(config-mcec-domain)#exit | Exit MCEC mode |
(config)#commit | Commit the transaction. |
LEAF
#configure terminal | Enter configure mode. |
(config)#bridge 1 protocol rstp vlan-bridge | Create RSTP bridge 1. |
(config)#vlan database | Enter vlan database mode. |
(config-vlan)#vlan 2 bridge 1 state enable | Create VLAN 2. |
(config-vlan)#exit | Exit vlan database mode. |
(config)#interface po2 | Enter interface mode. |
(config-if)#switchport | Configure the interface as Layer 2 |
(config-if)#bridge-group 1 | Associate the interface with bridge group 1. |
(config-if)#switchport mode trunk | Set the switching characteristics of this interface to trunk mode. |
(config-if)#switchport trunk allowed vlan all | Enable all VLAN identifiers on this interface. |
(config-if)#exit | Exit interface mode. |
(config)#interface xe1 | Enter interface mode. |
(config-if)#channel-group 2 mode active | Add this interface to channel group 2 and enable link aggregation so that it can be selected for aggregation by the local system. |
(config-if)#exit | Exit interface mode. |
(config)#interface xe11 | Enter interface mode. |
(config-if)#channel-group 2 mode active | Add this interface to channel group 2 and enable link aggregation so that it can be selected for aggregation by the local system. |
(config-if)#exit | Exit interface mode. |
(config)#interface xe13 | Enter interface mode. |
(config-if)#channel-group 2 mode active | Add this interface to channel group 2 and enable link aggregation so that it can be selected for aggregation by the local system. |
(config-if)#exit | Exit interface mode. |
(config)#interface xe38 | Enter interface mode. |
(config-if)#channel-group 2 mode active | Add this interface to channel group 2 and enable link aggregation so that it can be selected for aggregation by the local system. |
(config-if)#exit | Exit interface mode. |
(config)#commit | (config)#commit |
Validation
TOR1
#sh mlag domain details
Domain Configuration
Domain System Number :1
Domain Address :1111.2222.3333
Domain Priority :1000
Intra Domain Interface :po3
Hello RCV State :Current
Hello Periodic Timer State :Fast Periodic
Domain Sync :IN_SYNC
Neigh Domain Sync :IN_SYNC
Domain Adjacency :UP
MLAG Configuration
MLAG-1
Mapped Aggregator :po1
Admin Key : 16385
Oper Key : 16385
Physical properties Digest : dd 9c f 76 dd b6 5f 2f eb a1 d3 bb 8d 96 fc 82
Neigh Admin Key : 32769
Neigh Physical Digest : dd 9c f 76 dd b6 5f 2f eb a1 d3 bb 8d 96 fc 82
Info RCV State : Current
Info Periodic Time State : Standby
Mlag Sync : IN_SYNC
Mode : Active-Active
Current Mlag State : Active
MLAG-2
Mapped Aggregator : po2
Admin Key : 16386
Oper Key : 16386
Physical properties Digest : dd 9c f 76 dd b6 5f 2f eb a1 d3 bb 8d 96 fc 82
Neigh Admin Key : 32770
Neigh Physical Digest : dd 9c f 76 dd b6 5f 2f eb a1 d3 bb 8d 96 fc 82
Info RCV State : Current
Info Periodic Time State : Standby
Mlag Sync : IN_SYNC
Mode : Active-Active
Current Mlag State : Active
#sh etherchannel summary
Aggregator po1 100001
Aggregator Type: Layer2
Admin Key: 16385 - Oper Key 16385
Link: xe9 (5007) sync: 1 (Mlag-active-link)
Link: xe11 (5008) sync: 1 (Mlag-active-link)
--------------------------------------
Aggregator po2 100002
Aggregator Type: Layer2
Admin Key: 16386 - Oper Key 16386
Link: xe1 (5005) sync: 1 (Mlag-active-link)
Link: xe13 (5006) sync: 1 (Mlag-active-link)
--------------------------------------
Aggregator po3 100003
Aggregator Type: Layer2
Admin Key: 0003 - Oper Key 0003
Link: xe49 (5002) sync: 1
#sh mlag 1 detail
MLAG-1
Mapped Aggregator :po1
Admin Key : 16385
Oper Key : 16385
Physical properties Digest : dd 9c f 76 dd b6 5f 2f eb a1 d3 bb 8d 96 fc 82
Neigh Admin Key : 32769
Neigh Physical Digest : dd 9c f 76 dd b6 5f 2f eb a1 d3 bb 8d 96 fc 82
Info RCV State : Current
Info Periodic Time State : Standby
Mlag Sync : IN_SYNC
Mode : Active-Active
Current Mlag State : Active
#sh mcec statistics
Unknown MCCPDU received on the system : 0
IDP xe49
Valid RX Hello PDUs : 398
Valid TX Hello PDUs : 417
Valid RX Info PDUs : 16
Valid TX Info PDUs : 6
Valid RX Mac Sync PDUs : 3
Valid TX Mac Sync PDUs : 4
MLAG 1
Valid RX Info PDUs : 8
Valid TX Info PDUs : 3
MLAG 2
Valid RX Info PDUs : 8
Valid TX Info PDUs : 3
#sh mlag domain summary
Domain Configuration
Domain System Number :1
Domain Address :1111.2222.3333
Domain Priority :1000
Intra Domain Interface :xe49
Domain Adjacency :UP
MLAG Configuration
MLAG-1
Mapped Aggregator :po1
Physical properties Digest : dd 9c f 76 dd b6 5f 2f eb a1 d3 bb 8d 96 fc 82
Total Bandwidth : 40g
Mlag Sync : IN_SYNC
Mode : Active-Active
Current Mlag State : Active
MLAG-2
Mapped Aggregator : po2
Physical properties Digest : dd 9c f 76 dd b6 5f 2f eb a1 d3 bb 8d 96 fc 82
Total Bandwidth : 40g
Mlag Sync : IN_SYNC
Mode : Active-Active
Current Mlag State : Active