Configuring Multi-Homing over BGP-LU

OcNOS-SP : Multi-Protocol Label Switching Guide : Multi-Protocol Label Switching Configuration Guide : EVPN MPLS E-TREE Configuration : Configuring Multi-Homing over BGP-LU

Topology

Figure 25-4 shows the topology used to show how to configure multi-homing in MPLS EVPN.using BGP-LU as underlay MPLS path

Figure 25-4: MPLS EVPN Multi-homing over LU Configuration

Configuration

PE1

#configure terminal	Enter configuration mode.
(config)#interface lo	Enter interface mode for loopback.
(config-if)#ip address 101.1.1.1/32 secondary	Configure IP address on loopback
(config-if)#exit	Exit interface mode
(config)#mac vrf vrfred	Configure MAC VRF
(config-vrf)#rd 101:1	Configure RD for the MAC VRF
(config-vrf)#route-target export 101:1	Configure export RT for the MAC VRF
(config-vrf)#route-target import 104:1	Configure import RT for the MAC VRF
(config-vrf)#route-target import 105:1	Configure import RT for the MAC VRF
(config-vrf)#exit	Exit VRF mode.
(config)#evpn mpls enable	Enable the evpn mpls.
(config)#evpn mpls vtep-ip-global 101.1.1.1	Configure VTEP-IP-global.
(config)#evpn mpls id 1000	Configure MPLS EVID.
(config-evpn-mpls)#host-reachability-protocol evpn-bgp vrfred	Configure host-reachability with VRF association.
(config-if)#interface xe6.2	Configure sub-interface to create access-circuit.
(config-if)#switchport	Make the sub-interface a Layer 2 interface
(config-if)#encapsulation dot1q 2	Configure the encapsulation required.
(config-if)#map vpn-id 10000	Map interface to Ethernet virtual network identifier.
(config-if)#exit	Exit interface mode.
(config)#router ldp	Enable LDP in the PE
(config-router)#exit	Exit router mode
(config)#interface xe5	Enter interface mode for the network side interface.
(config-if)#ip address 10.1.1.1/24	Configure IP address on the network interface
(config-if)#label-switching	Enable label-switching.
(config-if)#enable-ldp ipv4	Enable ldp
(config-if)#exit	Exit interface mode
(config)#router ospf 1	Enter OSPF router mode
(config-router)#ospf router-id 101.1.1.1	Configure router-id.
(config-router)#network 101.1.1.1/32 area 0.0.0.0	Advertise the loopback address in area 0.
(config-router)#network 10.1.1.0/24 area 0.0.0.0	Advertise the network address in area 0
(config-router)#exit	Exit OSPF router mode.
(config)#router bgp 1	Enter BGP router mode
(config)#allocate-label all	Configure allocate all under router bgp
(config-router)#neighbor 102.1.1.1 remote-as 1	Advertise the neighbor in BGP process with the remote-as number
(config-router)#neighbor 102.1.1.1 update-source lo	Configure the update-source for the neighbor
(config-router)#neighbor 104.1.1.1 remote-as 1	Advertise the neighbor in BGP process with the remote-as number
(config-router)#neighbor 104.1.1.1 update-source lo	Configure the update-source for the neighbor
(config-router)#neighbor 105.1.1.1 remote-as 1	Advertise the neighbor in BGP process with the remote-as number
(config-router)#neighbor 105.1.1.1 update-source lo	Configure the update-source for the neighbor
(config-router)# address-family ipv4 unicast	Entering into address family ipv4 unicast
(config-router-af)# network 104.1.1.1/32	Advertise the network
(config-router-af)# exit-address-family	Exit from ipv4 address family
(config-router)# address-family ipv4 labeled-unicast	Entering into address family ipv4 labeled-unicast
(config-router-af)#neighbor 102.1.1.1 activate	Activate the ipv4 labeled-unicast neighbor
(config-router-af)#neighbor 102.1.1.1 next-hop-self	Configure next-hop-self for the ipv4 labeled-unicast neighbor
config-router-af)#neighbor 102.1.1.1 route-reflector-client	Configure neighbor as route reflector client
(config-router-af)# exit-address-family	Exit from ipv4 labeled-unicast address family
(config-router)#address-family l2vpn evpn	Enter EVPN address family mode
(config-router-af)#neighbor 104.1.1.1 activate	Activate the neighbor
(config-router-af)#neighbor 105.1.1.1 activate	Activate the neighbor
(config-router-af)#exit-address-family	Exit address family mode.
(config-router)#exit	Exit the router mode
(config)#commit	Commit the transaction.
(config)#exit	Exit the config mode.

ABR1: Loopback Interface

#configure terminal	Enter configuration mode.
(config)#interface lo	Enter the Interface mode for the loopback interface.
(config-if)#ip address 102.1.1.1/32 secondary	Configure IP address on loopback interface.
(config-if)#exit	Exit interface mode
(config)#commit	Commit candidate configuration to be running configuration
(config)#exit	Exit the config mode

ABR1: Global LDP

(config)#router ldp	Enter the Router LDP mode.
(config-router)#exit	Exit router mode.
(config)#commit	Commit candidate configuration to be running configuration

ABR1: Interface Configuration

(config)#interface xe6	Enter the Interface mode for xe3.
(config-if)#ip address 10.1.1.2/24	Configure IP address on the interface.
(config-if)#enable-ldp ipv4	Enable LDP on the physical interface
(config-if)#label-switching	Enable label switching on the interface.
(config-if)#exit	Exit interface mode
(config)#interface xe1	Enter the Interface mode for xe5
(config-if)#ip address 20.1.1.1/31	Configure IP address on the interface.
(config-if)#enable-ldp ipv4	Enable LDP on the physical interface
(config-if)#label-switching	Enable label switching on the interface.
(config-if)#exit	Exit interface mode
(config)#commit	Commit candidate configuration to be running configuration
(config)#exit	Exit the config mode

ABR1: OSPF Configuration

(config)# enable ext-ospf-multi-inst	Enable multiple-instance capability
(config)#router ospf 1	Enter the Router OSPF mode.
(config-router)#ospf router-id 102.1.1.1	Setting the Router ID as Loopback IP
(config-router)#network 102.1.1.1/32 area 0.0.0.0 instance-id 2	Advertise loopback address in OSPF.
(config-router)#network 20.1.1.0/24 area 0.0.0.0	Advertise network address in OSPF.
(config)#router ospf 2	Enter the Router OSPF mode.
(config-router)#network 10.1.1.0/24 area 0.0.0.0 instance-id 1	Advertise the network address in area 0
(config-router)#exit	Exit Router OSPF mode and return to Configure mode.
(config)#commit	Commit candidate configuration to be running configuration

ABR1: BGP-LU Configuration

(config)#router bgp 1	Enter the Router BGP mode, ASN: 1
(config)#allocate-label all	Configure allocate all under router bgp
(config-router)#neighbor 101.1.1.1 remote-as 1	Advertise the neighbor in BGP process with the remote-as number
(config-router)#neighbor 101.1.1.1 update-source lo	Configure the update-source for the neighbor
(config-router)#neighbor 103.1.1.1 remote-as 1	Advertise the neighbor in BGP process with the remote-as number
(config-router)#neighbor 103.1.1.1 update-source lo	Configure the update-source for the neighbor
(config-router)# address-family ipv4 unicast	Entering into address family ipv4 unicast
(config-router-af)# network 102.1.1.1/32	Advertise the network
(config-router-af)# exit-address-family	Exit from ipv4 address family
(config-router)# address-family ipv4 labeled-unicast	Entering into address family ipv4 labeled-unicast
(config-router-af)#neighbor 101.1.1.1 activate	Activate the ipv4 labeled-unicast neighbor
(config-router-af)#neighbor 101.1.1.1 next-hop-self	Configure next-hop-self for the ipv4 labeled-unicast neighbor
config-router-af)#neighbor 101.1.1.1 route-reflector-client	Configure neighbor as route reflector client
(config-router-af)#neighbor 103.1.1.1 activate	Activate the ipv4 labeled-unicast neighbor
(config-router-af)#neighbor 103.1.1.1 next-hop-self	Configure next-hop-self for the ipv4 labeled-unicast neighbor
config-router-af)#neighbor 103.1.1.1 route-reflector-client	Configure neighbor as route reflector client
(config-router-af)# exit-address-family	Exit from ipv4 labeled-unicast address family
(config-router)#exit	Exit router mode.
(config)#commit	Commit candidate configuration to be running configuration

ABR2

#configure terminal	Enter configuration mode.
(config)#int lo	Enter interface mode for loopback.
(config-if)#ip address 103.1.1.1/32 secondary	Configure IP address on loopback
(config)#router ldp	Configure ldp.
(config)#interface xe4	Enter interface mode for the network side interface.
(config-if)#ip address 30.1.1.1/24	Configure IP address on the network interface
(config-if)#label-switching	Enable label-switching.
(config-if)#enable-ldp	Enable RSVP.
(config)#interface xe1	Enter interface mode for the network side interface.
(config-if)#ip address 20.1.1.2/24	Configure IP address on the network interface
(config-if)#label-switching	Enable label-switching.
(config-if)#enable-ldp	Enable ldp
(config)#interface xe7	Enter interface mode for the network side interface.
(config-if)#ip address 40.1.1.1/24	Configure IP address on the network interface
(config-if)#label-switching	Enable label-switching.
(config-if)#enable-rsvp	Enable RSVP.
(config-if)#exit	Exit interface mode
(config)# enable ext-ospf-multi-inst	Enable multiple-instance capability
(config)#router ospf 2	Enter OSPF router mode
(config-router)#ospf router-id 103.1.1.1	Configure router-id.
(config-router)#network 103.1.1.1/32 area 0.0.0.0 instance-id 3	Advertise the loopback address in area 0.
(config-router)#network 20.1.1.0/24 area 0.0.0.0	Advertise the network address in area 0
(config)#router ospf 3	Enter the Router OSPF mode.
(config-router)#network 30.1.1.0/24 area 0.0.0.0 instance-id 2	Advertise the network address in area 0
(config-router)#network 40.1.1.0/24 area 0.0.0.0	Advertise the network address in area 0
(config-router)#exit	Exit the router mode
(config)#commit	Commit candidate configuration to be running configuration
(config)#exit	Exit the config mode

ABR2: BGP-LU Configuration

(config)#router bgp 1	Enter the Router BGP mode, ASN: 1
(config)#allocate-label all	Configure allocate all under router bgp
(config-router)#neighbor 102.1.1.1 remote-as 1	Advertise the neighbor in BGP process with the remote-as number
(config-router)#neighbor 102.1.1.1 update-source lo	Configure the update-source for the neighbor
(config-router)#neighbor 104.1.1.1 remote-as 1	Advertise the neighbor in BGP process with the remote-as number
(config-router)#neighbor 104.1.1.1 update-source lo	Configure the update-source for the neighbor
(config-router)#neighbor 105.1.1.1 remote-as 1	Advertise the neighbor in BGP process with the remote-as number
(config-router)#neighbor 105.1.1.1 update-source lo	Configure the update-source for the neighbor
(config-router)# address-family ipv4 unicast	Entering into address family ipv4 unicast
(config-router-af)# network 103.1.1.1/32	Advertise the network
(config-router-af)# exit-address-family	Exit from ipv4 address family
(config-router)# address-family ipv4 labeled-unicast	Entering into address family ipv4 labeled-unicast
(config-router-af)#neighbor 102.1.1.1 activate	Activate the ipv4 labeled-unicast neighbor
(config-router-af)#neighbor 102.1.1.1 next-hop-self	Configure next-hop-self for the ipv4 labeled-unicast neighbor
config-router-af)#neighbor 102.1.1.1 route-reflector-client	Configure neighbor as route reflector client
(config-router-af)#neighbor 104.1.1.1 activate	Activate the ipv4 labeled-unicast neighbor
(config-router-af)#neighbor 104.1.1.1 next-hop-self	Configure next-hop-self for the ipv4 labeled-unicast neighbor
config-router-af)#neighbor 104.1.1.1 route-reflector-client	Configure neighbor as route reflector client
(config-router-af)#neighbor 105.1.1.1 activate	Activate the ipv4 labeled-unicast neighbor
(config-router-af)#neighbor 105.1.1.1 next-hop-self	Configure next-hop-self for the ipv4 labeled-unicast neighbor
config-router-af)#neighbor 105.1.1.1 route-reflector-client	Configure neighbor as route reflector client
(config-router-af)# exit-address-family	Exit from ipv4 labeled-unicast address family
(config-router)#exit	Exit the router mode
(config)#commit	Commit candidate configuration to be running configuration

PE2

#configure terminal	Enter configuration mode.
(config)#int lo	Enter interface mode for loopback.
(config-if)#ip address 104.1.1.1/32 secondary	Configure IP address on loopback
(config-if)#exit	Exit interface mode
(config)#mac vrf vrfred	Configure MAC VRF
(config-vrf)#rd 104:1	Configure RD for the MAC VRF
(config-vrf)#route-target import 101:1	Configure import RT for the MAC VRF
(config-vrf)#route-target export 104:1	Configure export RT for the MAC VRF
(config-vrf)#exit	Exit VRF mode
(config)#evpn mpls enable	Enable evpn mpls.
(config)#evpn mpls vtep-ip-global 104.1.1.1	Configure VTEP-IP-global.
(config)#evpn mpls id 1000	Configure MPLS EVID.
(config-evpn-mpls)#host-reachability-protocol evpn-bgp vrfred	Configure host-reachability with VRF association.
(config)#router ldp	Enable ldp in the PE
(config)#interface xe5	Enter interface mode for the network side interface.
(config-if)#ip address 30.1.1.2/24	Configure IP address on the network interface
(config-if)#label-switching	Enable label-switching.
(config-if)#enable-ldp ipv4	Enable ldp
(config-if)#exit	Exit interface mode
(config)#router ospf 3	Enter OSPF router mode
(config-router)#ospf router-id 104.1.1.1	Configure router-id.
(config-router)#network 104.1.1.1/32 area 0.0.0.2	Advertise the loopback address in area 0.
(config-router)#network 30.1.1.0/24 area 0.0.0.2	Advertise the network address in area 0
(config-router)#exit	Exit OSPF router mode.
(config)#router bgp 1	Enter BGP router mode
(config-router)#neighbor 103.1.1.1 remote-as 1	Advertise the neighbor in BGP process with the remote-as number
(config-router)#neighbor 103.1.1.1 update-source lo	Configure the update-source for the neighbor
(config-router)#neighbor 101.1.1.1 remote-as 1	Advertise the neighbor in BGP process with the remote-as number
(config-router)#neighbor 101.1.1.1 update-source lo	Configure the update-source for the neighbor
(config-router)# address-family ipv4 unicast	Entering into address family ipv4 unicast
(config-router-af)# network 104.1.1.1/32	Advertise the network
(config-router-af)# exit-address-family	Exit from ipv4 address family
(config-router)# address-family ipv4 labeled-unicast	Entering into address family ipv4 labeled-unicast
(config-router-af)#neighbor 103.1.1.1 activate	Activate the ipv4 labeled-unicast neighbor
(config-router-af)# exit-address-family	Exit from ipv4 address family
(config-router)#address-family l2vpn evpn	Enter EVPN address family mode
(config-router-af)#neighbor 101.1.1.1 activate	Activate the neighbor
(config-router-af)#exit-address-family	Exit address family mode.
(config-router)#exit	Exit the router mode
(config)#commit	Commit candidate configuration to be running configuration
(config)#evpn multihoming enable	Enable EVPN multi-homing
(config)#int po1	Enter interface mode
(config-if)#evpn multi-homed system-mac 00:00:00:00:00:00:00:11:22	Make the interface multi-homed and set an Ethernet Segment Identifier (ESI)
(config-if)#exit	Exit interface mode.
(config)#int xe6	Enter interface mode
(config-if)#channel-group 1 mode active	Add member to the LAG interface
(config-if)#exit	Exit the interface mode.
(config)#commit	Commit candidate configuration to be running configuration
(config-if)#int po1.2	Configure sub-interface to create access-circuit.
(config-if)#switchport	Make the sub-interface a Layer 2 interface
(config-if)#encapsulation dot1q 2	Configure the encapsulation required.
(config-if)#map vpn-id 1000	Map interface to Ethernet virtual network identifier.
(config-if)#exit	Exit interface mode.
(config)#commit	Commit candidate configuration to be running configuration

PE3

#configure terminal	Enter configuration mode.
(config)#int lo	Enter interface mode for loopback.
(config-if)#ip address 105.1.1.1/32 secondary	Configure IP address on loopback
(config-if)#exit	Exit interface mode
(config)#mac vrf vrfred	Configure MAC VRF
(config-vrf)#rd 105:1	Configure RD for the MAC VRF
(config-vrf)#route-target import 101:1	Configure import RT for the MAC VRF
(config-vrf)#route-target export 105:1	Configure export RT for the MAC VRF
(config-vrf)#exit	Exit VRF mode
(config)#evpn mpls enable	Enable evpn mpls.
(config)#evpn mpls vtep-ip-global 105.1.1.1	Configure VTEP-IP-global.
(config)#evpn mpls id 1000	Configure MPLS EVID.
(config-evpn-mpls)#host-reachability-protocol evpn-bgp vrfred	Configure host-reachability with VRF association.
(config-if)#exit	Exit interface mode.
(config)#router ldp	Enable RSVP in the PE
(config)#interface xe4	Enter interface mode for the network side interface.
(config-if)#ip address 40.1.1.2/24	Configure IP address on the network interface
(config-if)#label-switching	Enable label-switching.
(config-if)#enable-ldp	Enable RSVP.
(config-if)#exit	Exit interface mode
(config)#router ospf 3	Enter OSPF router mode
(config-router)#ospf router-id 105.1.1.1	Configure router-id.
(config-router)#network 105.1.1.1/32 area 0.0.0.0	Advertise the loopback address in area 0.
(config-router)#network 40.1.1.0/24 area 0.0.0.0	Advertise the network address in area 0
(config-router)#exit	Exit OSPF router mode.
(config)#router bgp 1	Enter BGP router mode
(config-router)#neighbor 101.1.1.1 remote-as 1	Advertise the neighbor in BGP process with the remote-as number
(config-router)#neighbor 101.1.1.1 update-source lo	Configure the update-source for the neighbor
(config-router)#neighbor 103.1.1.1 remote-as 1	Advertise the neighbor in BGP process with the remote-as number
(config-router)#neighbor 103.1.1.1 update-source lo	Configure the update-source for the neighbor
(config-router)# address-family ipv4 unicast	Entering into address family ipv4 unicast
(config-router-af)# network 105.1.1.1/32	Advertise the network
(config-router-af)# exit-address-family	Exit from ipv4 address family
(config-router)# address-family ipv4 labeled-unicast	Entering into address family ipv4 labeled-unicast
(config-router-af)#neighbor 103.1.1.1 activate	Activate the ipv4 labeled-unicast neighbor
(config-router-af)# exit-address-family	Exit from ipv4 address family
(config-router)#address-family l2vpn evpn	Enter EVPN address family mode
(config-router-af)#neighbor 101.1.1.1 activate	Activate the neighbor
(config-router-af)#exit	Exit the transaction
(config-router)#exit	Exit the router mode
(config)#commit	Commit candidate configuration to be running configuration
(config)#evpn multihoming enable	Enable EVPN multi-homing
(config)#int po1	Enter interface mode
(config-if)#evpn multi-homed system-mac 00:00:00:00:00:00:00:11:22	Make the interface multi-homed and set an Ethernet Segment Identifier (ESI)
(config-if)#exit	Exit interface mode.
(config)#int xe3	Enter interface mode
(config-if)#channel-group 1 mode active	Add member to the LAG interface
(config-if)#exit	Exit the interface mode.
(config)#commit	Commit candidate configuration to be running configuration
(config-if)#int po1.2	Configure sub-interface to create access-circuit.
(config-if)#switchport	Make the sub-interface a Layer 2 interface
(config-if)#encapsulation dot1q 2	Configure the encapsulation required.
(config-if)#map vpn-id 10000	Map interface to Ethernet virtual network identifier.
(config-if)#commit	Commit candidate configuration to be running configuration

Validation

Note: Remote entries cannot be fetched from through MAC table/ARP cache/ND cache. However they can be fetched from the BGP table.

PE1

#show evpn mpls tunnel

EVPN-MPLS Network tunnel Entries

Source Destination Status Up/Down Update evpn-id

===================================================================================

101.1.1.1 105.1.1.1 Installed 01:25:18 01:25:18 1000

101.1.1.1 104.1.1.1 Installed 01:24:22 01:24:22 1000

#show evpn mpls tunnel label

EVPN-MPLS Network tunnel labels

Local Remote

Destination Status evpn-id Network-Intf Tunnel-Label MC-Label UC-Label MC-Label UC-Label

===================================================================================================================

103.1.1.1 Installed 1000 xe1 24320 16 640 16 640

104.1.1.1 Installed 1000 xe2 24324 16 640 16 640

Total number of entries are 2

#show evpn mpls mac-table

==========================================================================================================================================

EVPN MPLS MAC Entries

==========================================================================================================================================

VNID Interface VlanId Inner-VlanId Mac-Addr VTEP-Ip/ESI Type Status AccessPortDesc

__________________________________________________________________________________________________________________________________________

1000 po1.2 ---- ---- 0000.0000.0001 00:00:00:00:00:00:00:00:11:22 Dynamic Local ------- -------

1000 po1.2 ---- ---- 0000.0000.0003 00:00:00:00:00:00:00:00:11:22 Dynamic Local ------- -------

1000 po1.2 ---- ---- 0000.0000.0004 00:00:00:00:00:00:00:00:11:22 Dynamic Local ------- -------

1000 po1.2 ---- ---- 0000.0000.0005 00:00:00:00:00:00:00:00:11:22 Dynamic Local ------- -------

1000 po1.2 ---- ---- 0000.0000.0006 00:00:00:00:00:00:00:00:11:22 Dynamic Local ------- -------

1000 po1.2 ---- ---- 0000.0000.0007 00:00:00:00:00:00:00:00:11:22 Dynamic Local ------- -------

#show evpn mpls arp-cache

MPLS-EVPN ARP-CACHE Information

===========================

EVPN-ID Ip-Addr Mac-Addr Type

______________________________________________________

1000 11.11.11.1 0000.0000.1002 Static Local

Total number of entries are 1

#show evpn mpls nd-cache

MPLS-EVPN ND-CACHE Information

===========================

EVPN-ID Ip-Addr Mac-Addr Type

_____________________________________________________________________________

1000 1001::1 0000.0000.1003 Static Local

Total number of entries are 1

#show evpn mpls id 1000

EVPN-MPLS Information

=================

Codes: NW - Network Port

AC - Access Port

(u) - Untagged

VPN-ID EVI-Name EVI-Type Type Interface ESI VLAN DF-Status Src-Addr Dst-Addr

_______________________________________________________________________________________________________________________________

1000 ---- L2 NW ---- ---- ---- ---- 101.1.1.1 105.1.1.1

1000 ---- L2 NW ---- ---- ---- ---- 101.1.1.1 104.1.1.1

1000 ---- -- AC po1.2 00:00:00:00:00:00:00:00:11:22 ---- DF ---- ----

#show evpn mpls tunnel summary

Total number of entries: 2 [Installed: 2, Resolved: 0, Unresolved: 0]

#show evpn mpls mac-table summary

==========================================================

Evpn mpls MAC Summary

==========================================================

Total number of entries are : 6

#show bgp l2vpn evpn

BGP table version is 6, local router ID is 10.12.4.242

Status codes: s suppressed, d damped, h his]tory, * valid, > best, i - internal,

l - labeled, S Stale

Origin codes: i - IGP, e - EGP, ? - incomplete

[EVPN route type]:[ESI]:[VNID]:[relevent route information]

1 - Ethernet Auto-discovery Route

2 - MAC/IP Route

3 - Inclusive Multicast Route

4 - Ethernet Segment Route

5 - Prefix Route

Network Next Hop Metric LocPrf Weight Path Peer Encap

RD[101:1] VRF[vrfred]:

* i [1]:[00:00:00:00:00:00:00:00:11:22]:[1]:[18]