Link Layer Discovery Protocol Configuration
This chapter contains a complete sample Link Layer Discovery Protocol (LLDP) configuration.
LLDP is a neighbor discovery protocol that defines a method for network access devices using Ethernet connectivity to advertise themselves to other devices on the same physical LAN, and then to store information about the network. It allows a device to learn higher-layer management reachability and connection endpoint information from adjacent devices. Using LLDP, a network device is able to advertise its identity, its capabilities and its media-specific configuration, as well as learn the same information from other connected devices.
Note: The lldp-agent command is not supported for SVLAN, VLAN, and loop-back interfaces.
Topology
Figure 16-31 displays a sample LLDP topology.
LLDP Topology
Interface Mode TLV
Default Agent
All configuration commands in the table below should be followed for each switch.
#configure terminal | Enter configure mode. |
(config)#bridge 1 protocol ieee vlan-bridge | Configure an IEEE VLAN-aware bridge. |
(config)#vlan database | Enter VLAN configure mode. |
(config-vlan)#vlan 2 bridge 1 state enable | Configure a VLAN and add it to the bridge. |
(config-vlan)#exit | Exit the VLAN configuration mode. |
(config)#interface eth1 | Enter interface mode. |
(config-if)#switchport | Set switching characteristics on the port. |
(config-if)#bridge-group 1 | Associate the interface to the bridge. |
(config-if)#lldp-agent | Enter into the default agent |
(if-lldp-agent)#set lldp enable txrx | Enable an LLDP agent on the port. |
(if-lldp-agent)#set lldp chassis-id-tlv ip-address | Configure the subtype for chassis-id TLV |
(if-lldp-agent)#set lldp port-id-tlv mac-address | Configure the subtype for port-id TLV |
(if-lldp-agent)#lldp tlv basic-mgmt port-description select | Enable the port-description TLV to be transmitted on the port |
(if-lldp-agent)#lldp tlv basic-mgmt system-name select | Enable the system-name TLV to be transmitted on the port |
(if-lldp-agent)#lldp tlv basic-mgmt system-capabilities select | Enable the system-capabilities TLV to be transmitted on the port |
(if-lldp-agent)#lldp tlv basic-mgmt system-description select | Enable the system-description TLV to be transmitted on the port |
(if-lldp-agent)#lldp tlv basic-mgmt management-address select | Enable the management-address TLV to be transmitted on the port |
(if-lldp-agent)#lldp tlv ieee-8021-org-specific port-vlanid select | Enable the VLAN-id TLV to be transmitted on the port |
(if-lldp-agent)#lldp tlv ieee-8021-org-specific vlan-name select | Enable the VLAN-NAME TLV to be transmitted on the port |
(if-lldp-agent)#lldp tlv ieee-8021-org-specific port-ptcl-vlanid select | Enable the Port and Protocol VLAN id TLV to be transmitted on the port |
(if-lldp-agent)#lldp tlv ieee-8021-org-specific ptcl-identity select | Enable the Protocol Identity TLV to be transmitted on the port |
(if-lldp-agent)#lldp tlv ieee-8021-org-specific vid-digest select | Enable the VID Usage Digest TLV to be transmitted on the port |
(if-lldp-agent)#lldp tlv ieee-8021-org-specific mgmt-vid select | Enable the Management VID TLV to be transmitted on the port |
(if-lldp-agent)#lldp tlv ieee-8021-org-specific link-agg select | Enable the Link Aggregation TLV to be transmitted on the port |
(if-lldp-agent)#lldp tlv ieee-8023-org-specific mac-phy select | Enable the MAC/PHY Configuration/Status TLV to be transmitted on the port |
(if-lldp-agent)#lldp tlv ieee-8023-org-specific max-mtu-size select | Enable the Maximum Frame Size TLV to be transmitted on the port |
(if-lldp-agent)#set lldp timer msg-fast-tx 5 | Defines the time interval during fast transmission periods |
(if-lldp-agent)#set lldp tx-fast-init 6 | Defines the number of LLDPDUs that are transmitted during a fast transmission period |
(if-lldp-agent)#exit | Exit the lldp agent mode |
(config-if)#exit | Exit interface mode. |
Validation
1. Verify the LLDP configurations in the local switch
#show running-config lldp
!
interface eth1
lldp-agent
set lldp enable txrx
set lldp chassis-id-tlv ip-address
set lldp port-id-tlv mac-address
lldp tlv basic-mgmt port-description select
lldp tlv basic-mgmt system-name select
lldp tlv basic-mgmt system-description select
lldp tlv basic-mgmt system-capabilities select
lldp tlv basic-mgmt management-address select
lldp tlv ieee-8021-org-specific port-vlanid select
lldp tlv ieee-8021-org-specific port-ptcl-vlanid select
lldp tlv ieee-8021-org-specific vlan-name select
lldp tlv ieee-8021-org-specific ptcl-identity select
lldp tlv ieee-8021-org-specific vid-digest select
lldp tlv ieee-8021-org-specific mgmt-vid select
lldp tlv ieee-8021-org-specific link-agg select
lldp tlv ieee-8023-org-specific mac-phy select
lldp tlv ieee-8023-org-specific max-mtu-size select
set lldp timer msg-fast-tx 5
set lldp tx-fast-init 6
!
2. Verify the LLDP port statistics
#show lldp interface eth1 nearest-bridge
Agent Mode : Nearest bridge
Enable (tx/rx) : Y/Y
Message fast transmit time : 5
Message transmit interval : 30
Reinitialisation delay : 2
MED Enabled : N
Device Type : Not Defined
Traffic statistics :
Total frames transmitted : 4
Total entries aged : 0
Total frames received : 3
Total error frames received: 0
Total frames discarded : 0
Total discarded TLVs : 0
Total unrecognised TLVs : 0
Customer Bridge
All configuration commands in the table below should be followed for each switch.
#configure terminal | Enter configure mode. |
(config)#bridge 1 protocol ieee vlan-bridge | Configure an IEEE VLAN-aware bridge. |
(config)#vlan database | Enter VLAN configure mode. |
(config-vlan)#vlan 2 bridge 1 state enable | Configure a VLAN and add it to the bridge. |
(config-vlan)#exit | Exit the VLAN configuration mode. |
(config)#interface eth1 | Enter interface mode. |
(config-if)#switchport | Set switching characteristics on the port. |
(config-if)#bridge-group 1 | Associate the interface to the bridge. |
(config-if)#lldp-agent customer-bridge | Enter into the Customer Bridge agent |
(if-lldp-agent)#set lldp enable txrx | Enable an LLDP agent on the port. |
(if-lldp-agent)#set lldp chassis-id-tlv ip-address | Configure the subtype for chassis-id TLV |
(if-lldp-agent)#set lldp port-id-tlv mac-address | Configure the subtype for port-id TLV |
(if-lldp-agent)#lldp tlv basic-mgmt port-description select | Enable the port-description TLV to be transmitted on the port. |
(if-lldp-agent)#lldp tlv basic-mgmt system-name select | Enable the system-name TLV to be transmitted on the port. |
(if-lldp-agent)#lldp tlv basic-mgmt system-capabilities select | Enable the system-capabilities TLV to be transmitted on the port. |
(if-lldp-agent)#lldp tlv basic-mgmt system-description select | Enable the system-description TLV to be transmitted on the port. |
(if-lldp-agent)#lldp tlv basic-mgmt management-address select | Enable the management-address TLV to be transmitted on the port. |
(if-lldp-agent)#lldp tlv ieee-8021-org-specific port-vlanid select | Enable the VLAN-id TLV to be transmitted on the port. |
(if-lldp-agent)#lldp tlv ieee-8021-org-specific vlan-name select | Enable the VLAN-NAME TLV to be transmitted on the port. |
(if-lldp-agent)#lldp tlv ieee-8021-org-specific port-ptcl-vlanid select | Enable the Port and Protocol VLAN id TLV to be transmitted on the port. |
(if-lldp-agent)#lldp tlv ieee-8021-org-specific ptcl-identity select | Enable the Protocol Identity TLV to be transmitted on the port. |
(if-lldp-agent)#lldp tlv ieee-8021-org-specific vid-digest select | Enable the VID Usage Digest TLV to be transmitted on the port |
(if-lldp-agent)#lldp tlv ieee-8021-org-specific mgmt-vid select | Enable the Management VID TLV to be transmitted on the port. |
(if-lldp-agent)#lldp tlv ieee-8021-org-specific link-agg select | Enable the Link Aggregation TLV to be transmitted on the port. |
(if-lldp-agent)#lldp tlv ieee-8023-org-specific mac-phy select | Enable the MAC/PHY Configuration/Status TLV to be transmitted on the port |
(if-lldp-agent)#lldp tlv ieee-8023-org-specific max-mtu-size select | Enable the Maximum Frame Size TLV to be transmitted on the port. |
(if-lldp-agent)#set lldp timer msg-fast-tx 5 | Defines the time interval during fast transmission periods. |
(if-lldp-agent)#set lldp tx-fast-init 6 | Defines the number of LLD PDUs that are transmitted during a fast transmission period. |
(if-lldp-agent)#exit | Exit the lldp agent mode |
(config-if)#exit | Exit interface mode. |
Validation
1. Verify the LLDP configurations in the local switch:
#show #show running-config lldp
!
interface eth1
lldp-agent customer-bridge
set lldp enable txrx
set lldp chassis-id-tlv ip-address
set lldp port-id-tlv mac-address
lldp tlv basic-mgmt port-description select
lldp tlv basic-mgmt system-name select
lldp tlv basic-mgmt system-description select
lldp tlv basic-mgmt system-capabilities select
lldp tlv basic-mgmt management-address select
lldp tlv ieee-8021-org-specific port-vlanid select
lldp tlv ieee-8021-org-specific port-ptcl-vlanid select
lldp tlv ieee-8021-org-specific vlan-name select
lldp tlv ieee-8021-org-specific ptcl-identity select
lldp tlv ieee-8021-org-specific vid-digest select
lldp tlv ieee-8021-org-specific mgmt-vid select
lldp tlv ieee-8021-org-specific link-agg select
lldp tlv ieee-8023-org-specific mac-phy select
lldp tlv ieee-8023-org-specific max-mtu-size select
set lldp timer msg-fast-tx 5
set lldp tx-fast-init 6
!
2. Verify the LLDP port statistics
#show lldp interface eth1 customer-bridge
Agent Mode : Customer-bridge
Enable (tx/rx) : Y/Y
Message fast transmit time : 5
Message transmit interval : 30
Reinitialisation delay : 2
MED Enabled : N
Device Type : Not Defined
Traffic statistics :
Total frames transmitted : 8
Total entries aged : 0
Total frames received : 7
Total error frames received: 0
Total frames discarded : 0
Total discarded TLVs : 0
Total unrecognised TLVs : 0
Non-Tpmr-Bridge
The below configurations should be followed for each switch.
#configure terminal | Enter configure mode. |
(config)#bridge 1 protocol ieee vlan-bridge | Configure an IEEE VLAN-aware bridge. |
(config)#vlan database | Enter VLAN configure mode. |
(config-vlan)#vlan 2 bridge 1 state enable | Configure a VLAN and add it to the bridge. |
(config-vlan)#exit | Exit the VLAN configuration mode. |
(config)#interface eth1 | Enter interface mode. |
(config-if)#switchport | Set switching characteristics on the port. |
(config-if)#bridge-group 1 | Associate the interface to the bridge. |
(config-if)#lldp-agent non-tpmr-bridge | Enter into the Non tpmr Bridge agent |
(if-lldp-agent)#set lldp enable txrx | Enable an LLDP agent on the port. |
(if-lldp-agent)#set lldp chassis-id-tlv ip-address | Configure the subtype for chassis-id TLV |
(if-lldp-agent)#set lldp port-id-tlv mac-address | Configure the subtype for port-id TLV |
(if-lldp-agent)#lldp tlv basic-mgmt port-description select | Enable the port-description TLV to be transmitted on the port |
(if-lldp-agent)#lldp tlv basic-mgmt system-name select | Enable the system-name TLV to be transmitted on the port |
(if-lldp-agent)#lldp tlv basic-mgmt system-capabilities select | Enable the system-capabilities TLV to be transmitted on the port |
(if-lldp-agent)#lldp tlv basic-mgmt system-description select | Enable the system-description TLV to be transmitted on the port |
(if-lldp-agent)#lldp tlv basic-mgmt management-address select | Enable the management-address TLV to be transmitted on the port |
(if-lldp-agent)#lldp tlv ieee-8021-org-specific port-vlanid select | Enable the VLAN-id TLV to be transmitted on the port |
(if-lldp-agent)#lldp tlv ieee-8021-org-specific vlan-name select | Enable the VLAN-NAME TLV to be transmitted on the port |
(if-lldp-agent)#lldp tlv ieee-8021-org-specific port-ptcl-vlanid select | Enable the Port and Protocol VLAN id TLV to be transmitted on the port |
(if-lldp-agent)#lldp tlv ieee-8021-org-specific ptcl-identity select | Enable the Protocol Identity TLV to be transmitted on the port |
(if-lldp-agent)#lldp tlv ieee-8021-org-specific vid-digest select | Enable the VID Usage Digest TLV to be transmitted on the port |
(if-lldp-agent)#lldp tlv ieee-8021-org-specific mgmt-vid select | Enable the Management VID TLV to be transmitted on the port |
(if-lldp-agent)#lldp tlv ieee-8021-org-specific link-agg select | Enable the Link Aggregation TLV to be transmitted on the port |
(if-lldp-agent)#lldp tlv ieee-8023-org-specific mac-phy select | Enable the MAC/PHY Configuration/Status TLV to be transmitted on the port |
(if-lldp-agent)#lldp tlv ieee-8023-org-specific max-mtu-size select | Enable the Maximum Frame Size TLV to be transmitted on the port |
(if-lldp-agent)#set lldp timer msg-fast-tx 5 | Defines the time interval during fast transmission periods |
(if-lldp-agent)#set lldp tx-fast-init 6 | Defines the number of LLD PDUs that are transmitted during a fast transmission period |
(if-lldp-agent)#exit | Exit the lldp agent mode |
(config-if)#exit | Exit interface mode. |
Validation
1. Verify the LLDP configurations in the local switch:
#show running-config lldp
lldp-agent non-tpmr-bridge
set lldp enable txrx
set lldp chassis-id-tlv ip-address
set lldp port-id-tlv mac-address
lldp tlv basic-mgmt port-description select
lldp tlv basic-mgmt system-name select
lldp tlv basic-mgmt system-description select
lldp tlv basic-mgmt system-capabilities select
lldp tlv basic-mgmt management-address select
lldp tlv ieee-8021-org-specific port-vlanid select
lldp tlv ieee-8021-org-specific port-ptcl-vlanid select
lldp tlv ieee-8021-org-specific vlan-name select
lldp tlv ieee-8021-org-specific ptcl-identity select
lldp tlv ieee-8021-org-specific vid-digest select
lldp tlv ieee-8021-org-specific mgmt-vid select
lldp tlv ieee-8021-org-specific link-agg select
lldp tlv ieee-8023-org-specific mac-phy select
lldp tlv ieee-8023-org-specific max-mtu-size select
set lldp timer msg-fast-tx 5
set lldp tx-fast-init 6
!
2. Verify the LLDP port statistics
#show lldp interface eth1 non-tmpr-bridge
Agent Mode : Non-TPMR-bridge
Enable (tx/rx) : Y/Y
Message fast transmit time : 5
Message transmit interval : 30
Reinitialisation delay : 2
MED Enabled : Y
Device Type : Not Defined
Traffic statistics :
Total frames transmitted : 17
Total entries aged : 0
Total frames received : 6
Total error frames received: 0
Total frames discarded : 0
Total discarded TLVs : 0
Total unrecognised TLVs : 0
Media Endpoint Devices TLV
Switch A
(config)#interface eth1 | Enter interface mode. |
(config-if)#lldp-agent | Enter the default agent. |
(if-lldp-agent)#set lldp enable txrx | Set the admin status of the LLDP agent. |
(if-lldp-agent)#exit | Exit agent mode. |
(config-if)#lldp-agent customer-bridge | Enter the customer-bridge agent. |
(if-lldp-agent)#set lldp enable txrx | Set the admin status of the LLDP agent. |
(if-lldp-agent)#exit | Exit agent mode. |
(config-if)#lldp-agent non-tpmr-bridge | Enter the non-tpmr-bridge agent. |
(if-lldp-agent)#set lldp enable txrx | Set the admin status of the LLDP agent. |
(if-lldp-agent)#exit | Exit agent mode. |
(config-if)#set lldp med-devtype net-connect | Enter the med-devtype agent and set the device type to network connectivity. |
(config-if)#exit | Exit agent mode. |
Validation
#show run lldp
!
!
interface eth1
lldp-agent
set lldp enable txrx
set lldp med-devtype net-connect
lldp-agent non-tpmr-bridge
set lldp enable txrx
lldp-agent customer-bridge
set lldp enable txrx
!
#
#show lldp interface eth1
Agent Mode : Customer-bridge
Enable (tx/rx) : Y/Y
Message fast transmit time : 1
Message transmit interval : 30
Reinitialisation delay : 2
MED Enabled : Y
Device Type : Network Connectivity
Traffic statistics :
Total frames transmitted : 97
Total entries aged : 1
Total frames received : 92
Total error frames received: 0
Total frames discarded : 0
Total discarded TLVs : 0
Total unrecognised TLVs : 0
Agent Mode : Non-TPMR-bridge
Enable (tx/rx) : Y/Y
Message fast transmit time : 1
Message transmit interval : 30
Reinitialisation delay : 2
MED Enabled : N
Device Type : Network Connectivity
Traffic statistics :
Total frames transmitted : 89
Total entries aged : 0
Total frames received : 0
Total error frames received: 0
Total frames discarded : 0
Total discarded TLVs : 0
Total unrecognised TLVs : 0
Agent Mode : Nearest bridge
Enable (tx/rx) : Y/Y
Message fast transmit time : 1
Message transmit interval : 30
Reinitialisation delay : 2
MED Enabled : N
Device Type : Network Connectivity
Traffic statistics :
Total frames transmitted : 90
Total entries aged : 0
Total frames received : 0
Total error frames received: 0
Total frames discarded : 0
Total discarded TLVs : 0
Total unrecognised TLVs : 0
#
Switch B
(config)#interface eth1 | Enter interface mode. |
(config-if)#lldp-agent | Enter the default agent. |
(if-lldp-agent)#set lldp enable txrx | Set the admin status of the LLDP agent. |
(if-lldp-agent)#exit | Exit agent mode. |
(config-if)#lldp-agent customer-bridge | Enter the customer-bridge agent. |
(if-lldp-agent)#set lldp enable txrx | Set the admin status of the LLDP agent. |
(if-lldp-agent)#exit | Exit agent mode. |
(config-if)#lldp-agent non-tpmr-bridge | Enter the non-tpmr-bridge agent. |
(if-lldp-agent)#set lldp enable txrx | Set the admin status of the LLDP agent. |
(if-lldp-agent)#exit | Exit agent mode. |
(config-if)#set lldp med-devtype ep-class3 | Enter the med-devtype agent and set the device type to endpoint class 3. |
(config-if)#exit | Exit agent mode. |
Validation
#show running-config lldp
!
!
interface eth1
lldp-agent
set lldp enable txrx
set lldp chassis-id-tlv ip-address
set lldp med-devtype ep-class3
lldp-agent non-tpmr-bridge
set lldp enable txrx
set lldp chassis-id-tlv ip-address
lldp-agent customer-bridge
set lldp enable txrx
set lldp chassis-id-tlv ip-address
!
#
#show lldp interface eth1
Agent Mode : Customer-bridge
Enable (tx/rx) : Y/Y
Message fast transmit time : 1
Message transmit interval : 30
Reinitialisation delay : 2
MED Enabled : Y
Device Type : End Point Class-3
Traffic statistics :
Total frames transmitted : 11
Total entries aged : 0
Total frames received : 12
Total error frames received: 0
Total frames discarded : 0
Total discarded TLVs : 0
Total unrecognised TLVs : 0
Agent Mode : Non-TPMR-bridge
Enable (tx/rx) : Y/Y
Message fast transmit time : 1
Message transmit interval : 30
Reinitialisation delay : 2
MED Enabled : Y
Device Type : End Point Class-3
Traffic statistics :
Total frames transmitted : 7
Total entries aged : 0
Total frames received : 0
Total error frames received: 0
Total frames discarded : 0
Total discarded TLVs : 0
Total unrecognised TLVs : 0
Agent Mode : Nearest bridge
Enable (tx/rx) : Y/Y
Message fast transmit time : 1
Message transmit interval : 30
Reinitialisation delay : 2
MED Enabled : Y
Device Type : End Point Class-3
Traffic statistics :
Total frames transmitted : 8
Total entries aged : 0
Total frames received : 0
Total error frames received: 0
Total frames discarded : 0
Total discarded TLVs : 0
Total unrecognised TLVs : 0
#
Global Mode TLV
LLDPv2 TLVs can be configured globally, making it applicable for all interfaces where LLDP is enabled.
Topology
LLDP topology
SW1
SW1#configure terminal | Enter Configure mode |
SW1(config)#lldp tlv-select basic-mgmt port-description | Enable LLDP port description TLV in global mode |
SW1(config)#lldp tlv-select basic-mgmt system-name | Enable LLDP system name TLV in global mode |
SW1(config)#lldp tlv-select basic-mgmt system-capabilities | Enable LLDP system capabilities TLV in global mode |
SW1(config)#lldp tlv-select basic-mgmt system-description | Enable LLDP system description TLV in global mode |
SW1(config)#lldp tlv-select basic-mgmt management-address | Enable LLDP management address TLV in global mode |
SW1(config)#interface eth1 | Enter interface mode |
SW1(config-if)#lldp-agent | Enter LLDP interface mode |
SW1(if-lldp-agent)#set lldp enable txrx | Enable LLDP TLV transmit and receive for the nearest bridge |
SW1(if-lldp-agent)#exit | Exit LLDP mode |
SW1(config-if)#exit | Exit interface mode |
SW1(config)#end | Exit the configure mode |
SW2
SW2#configure terminal | Enter Configure mode |
SW2(config)#lldp tlv-select basic-mgmt port-description | Enable LLDP port description TLV in global mode |
SW2(config)#lldp tlv-select basic-mgmt system-name | Enable LLDP system name TLV in global mode |
SW2(config)#lldp tlv-select basic-mgmt system-capabilities | Enable LLDP system capabilities TLV in global mode |
SW2(config)#lldp tlv-select basic-mgmt system-description | Enable LLDP system description TLV in global mode |
SW2(config)#lldp tlv-select basic-mgmt management-address | Enable LLDP management address TLV in global mode |
SW2(config)#interface eth1 | Enter interface mode |
SW2(config-if)#lldp-agent | Enter LLDP interface mode |
SW2(if-lldp-agent)#set lldp enable txrx | Enable LLDP TLV transmit and receive for the nearest bridge |
SW2(if-lldp-agent)#exit | Exit LLDP mode |
SW2(config-if)#exit | Exit interface mode |
SW2(config)#end | Exit the configure mode |
Validation
SW1#show running-config lldp
!
lldp tlv-select basic-mgmt port-description
lldp tlv-select basic-mgmt system-name
lldp tlv-select basic-mgmt system-capabilities
lldp tlv-select basic-mgmt system-description
lldp tlv-select basic-mgmt management-address
!
interface eth1
lldp-agent
set lldp enable txrx
SW1#show lldp neighbors
Loc PortID Rem Host Name Rem Chassis Id Rem Port Id Agent Mode
--------------------------------------------------------------------------------
Eth1 OcNOS cc37.ab56.6d80 cc37.abbb.ed81 Nearest bridge
SW1#show lldp neighbors detail
--------------------------------------------------------------------------------
Nearest bridge Neighbors
Interface Name : eth1
Mandatory TLVs
Chassis id type : MAC address [cc37.ab56.6d80]
Port id type : MAC address [cc37.abbb.ed81]
Time to live : 121
Basic Management TLVs
System Name : SW2
System Description : Hardware Model:EC_AS4610-54, Software version: Oc
NOS,1.3.6.241a
Port Description : eth1
Remote System Capabilities : Bridge
Router
Capabilities Enabled : Router
Management Address : MAC Address [cc37.abbb.ed81]
Interface Number subtype : ifindex
Interface Number 10046
OID Number : 0
802.1 Org specific TLVs
Port vlan id : 0
Port & Protocol vlan id : 0
Remote Configured VLANs : None
Remote Protocols Advertised: None
Remote VID Usage Digest : 0
Remote Management Vlan : 0
Link Aggregation Capability: not capable of being aggregated
Link Aggregation Status : not currently in aggregation
Link Aggregation Port ID :
802.3 Org specific TLVs
AutoNego Support : Not-Supported
AutoNego Status : Disabled
AutoNego Capability : 0
Operational MAU Type : 0 [unknown]
Max Frame Size :
SW1#
LLDP-MED
LLDP extensions and behavior requirements are described specifically in the areas of network Configuration and policy, device location (including for Emergency Call Service / E911), Power over Ethernet management, and inventory management.
Based on the device type, different TLVs are advertised by the Station.
LLDP-MED Network Connectivity Device
LLDP-MED Network Connectivity Devices, as defined in this Standard, provide access to the IEEE 802 based LAN infrastructure for LLDP-MED Endpoint Devices. An LLDP-MED Network Connectivity Device is a LAN access device based on any of the following technologies:
• LAN Switch/Router
• IEEE 802.1 Bridge
• IEEE 802.3 Repeater (included for historical reasons)
• IEEE 802.11 Wireless Access Point
• Any device that supports the IEEE 802.1AB and MED extensions defined by this Standard and can relay IEEE 802 frames via any method.
Configuration Command
set lldp med-devtype net-connect
LLDP-MED Generic Endpoint (Class I)
The LLDP-MED Generic Endpoint (Class I) definition is applicable to all endpoint products that require the base LLDP discovery services, however do not support IP media or act as an end-user communication appliance. Such devices may include (but are not limited to) IP Communication Controllers, other communication related servers, or any device requiring basic services.
Configuration command:
set lldp med-devtype ep-class1
LLDP-MED Generic Endpoint (Class 2)
The LLDP-MED Media Endpoint (Class II) definition is applicable to all endpoint products that have IP media capabilities however may or may not be associated with a particular end user. Capabilities include all of the capabilities defined for the previous Generic Endpoint Class (Class I), and are extended to include aspects related to media streaming. Example product categories expected to adhere to this class include (but are not limited to) Voice / Media Gateways, Conference Bridges, Media Servers, and similar
Configuration command:
set lldp med-devtype ep-class2
LLDP-MED Generic Endpoint (Class 3)
The LLDP-MED Communication Endpoint (Class III) definition is applicable to all endpoint products that act as end user communication appliances supporting IP media. Capabilities include all of the capabilities defined for the previous Generic Endpoint (Class I) and Media Endpoint (Class II) classes, and are extended to include aspects related to end user devices. Example product categories expected to adhere to this class include (but are not limited to) end user communication appliances, such as IP Phones, PC-based softphones, or other communication appliances that directly support the end user.
Configuration command:
set lldp med-devtype ep-class3
Switch A
#configure terminal | Enter configure mode. |
(config)#bridge 1 protocol ieee vlan-bridge | Configure an IEEE VLAN-aware bridge. |
(config)#vlan database | Enter VLAN configure mode. |
(config-vlan)#vlan 2 bridge 1 state enable | Configure a VLAN and add it to the bridge. |
(config-vlan)#exit | Exit the VLAN configuration mode. |
(config)#interface eth1 | Enter interface mode. |
(config-if)#switchport | Set switching characteristics on the port. |
(config-if)#bridge-group 1 | Associate the interface to the bridge. |
(config-if)#lldp-agent | Enter into the default agent |
(if-lldp-agent)#set lldp enable txrx | Enable an LLDP agent on the port. |
(if-lldp-agent)#exit | Exit the lldp agent mode |
(if-config-if)#lldp-agent customer-bridge | Enter into the customer-bridge agent. |
(if-lldp-agent)#set lldp enable txrx | Enable an LLDP agent on the port. |
(if-lldp-agent)#exit | Exit the lldp agent mode |
(config-if)#lldp-agent non-tpmr-bridge | Enter into the non-tpmr-bridge agent |
(if-lldp-agent)#set lldp enable txrx | Enable an LLDP agent on the port. |
(if-lldp-agent)#exit | Exit the lldp agent mode |
(config-if)#set lldp med-devtype net-connect | Configure the med device type |
(config-if)#exit | Exit interface mode. |
Switch B
#configure terminal | Enter configure mode. |
(config)#bridge 1 protocol ieee vlan-bridge | Configure an IEEE VLAN-aware bridge. |
(config)#vlan database | Enter VLAN configure mode. |
(config-vlan)#vlan 2 bridge 1 state enable | Configure a VLAN and add it to the bridge. |
(config-vlan)#exit | Exit the VLAN configuration mode. |
(config)#interface eth1 | Enter interface mode. |
(config-if)#switchport | Set switching characteristics on the port. |
(config-if)#bridge-group 1 | Associate the interface to the bridge. |
(config-if)#lldp-agent | Enter into the default agent |
(if-lldp-agent)#set lldp enable txrx | Enable an LLDP agent on the port. |
(if-lldp-agent)#exit | Exit the lldp agent mode |
(config-if)#lldp-agent customer-bridge | Enter into the customer-bridge agent |
(if-lldp-agent)#set lldp enable txrx | Enable an LLDP agent on the port. |
(if-lldp-agent)#exit | Exit the lldp agent mode |
(config-if)#lldp-agent non-tpmr-bridge | Enter into the non-tpmr-bridge agent |
(if-lldp-agent)#set lldp enable txrx | Enable an LLDP agent on the port. |
(if-lldp-agent)#exit | Exit the lldp agent mode |
(config-if)#set lldp med-devtype ep-class3 | Configure the med device type |
(config-if)#exit | Exit interface mode. |
Validation
1. Verify the LLDP configurations on Switch A:
#show running-config lldp
!
!
interface eth1
lldp-agent
set lldp enable txrx
set lldp med-devtype net-connect
lldp-agent non-tpmr-bridge
set lldp enable txrx
lldp-agent customer-bridge
set lldp enable txrx
!
2. Verify the LLDP port statistics on Switch A:
#show lldp interface eth1
Agent Mode : Customer-bridge
Enable (tx/rx) : Y/Y
Message fast transmit time : 1
Message transmit interval : 30
Reinitialisation delay : 2
MED Enabled : Y
Device Type : Network Connectivity
Traffic statistics :
Total frames transmitted : 11
Total entries aged : 0
Total frames received : 10
Total error frames received: 0
Total frames discarded : 0
Total discarded TLVs : 0
Total unrecognised TLVs : 0
Agent Mode : Non-TPMR-bridge
Enable (tx/rx) : Y/Y
Message fast transmit time : 1
Message transmit interval : 30
Reinitialisation delay : 2
MED Enabled : N
Device Type : Network Connectivity
Traffic statistics :
Total frames transmitted : 7
Total entries aged : 0
Total frames received : 0
Total error frames received: 0
Total frames discarded : 0
Total discarded TLVs : 0
Total unrecognised TLVs : 0
Agent Mode : Nearest bridge
Enable (tx/rx) : Y/Y
Message fast transmit time : 1
Message transmit interval : 30
Reinitialisation delay : 2
MED Enabled : N
Device Type : Network Connectivity
Traffic statistics :
Total frames transmitted : 7
Total entries aged : 0
Total frames received : 0
Total error frames received: 0
Total frames discarded : 0
Total discarded TLVs : 0
Total unrecognised TLVs : 0
#show lldp interface eth1 non-tpmr-bridge
Agent Mode : Non-TPMR-bridge
Enable (tx/rx) : Y/Y
Message fast transmit time : 5
Message transmit interval : 30
Reinitialisation delay : 2
MED Enabled : N
Device Type : Not Defined
Traffic statistics :
Total frames transmitted : 4
Total entries aged : 0
Total frames received : 0
Total error frames received: 0
Total frames discarded : 0
Total discarded TLVs : 0
Total unrecognised TLVs : 0
3. Verify the LLDP configurations for end device ep-class3 on Switch B:
#show running-config lldp
!
interface eth1
set lldp med-devtype ep-class3
lldp-agent
set lldp enable txrx
lldp tlv med network-policy select
lldp-agent non-TPMR-bridge
set lldp enable txrx
lldp tlv med network-policy select
lldp-agent customer-bridge
set lldp enable txrx
lldp tlv med network-policy select
!
4. Verify the LLDP port statistics on Switch B:
#show lldp interface eth1
Agent Mode : Customer-bridge
Enable (tx/rx) : Y/Y
Message fast transmit time : 1
Message transmit interval : 30
Reinitialisation delay : 2
MED Enabled : Y
Device Type : End Point Class-3
Traffic statistics :
Total frames transmitted : 124
Total entries aged : 0
Total frames received : 125
Total error frames received: 0
Total frames discarded : 0
Total discarded TLVs : 0
Total unrecognised TLVs : 0
Agent Mode : Non-TPMR-bridge
Enable (tx/rx) : Y/Y
Message fast transmit time : 1
Message transmit interval : 30
Reinitialisation delay : 2
MED Enabled : Y
Device Type : End Point Class-3
Traffic statistics :
Total frames transmitted : 120
Total entries aged : 0
Total frames received : 0
Total error frames received: 0
Total frames discarded : 0
Total discarded TLVs : 0
Total unrecognised TLVs : 0
Agent Mode : Nearest bridge
Enable (tx/rx) : Y/Y
Message fast transmit time : 1
Message transmit interval : 30
Reinitialisation delay : 2
MED Enabled : Y
Device Type : End Point Class-3
Traffic statistics :
Total frames transmitted : 120
Total entries aged : 0
Total frames received : 0
Total error frames received: 0
Total frames discarded : 0
Total discarded TLVs : 0
Total unrecognised TLVs : 0
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