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This chapter contains the following sections:
Ensure that the Link Layer Discovery Protocol (LLDP) feature is enabled on the switch.
This example shows how to configure the global LLDP hold time to 200 seconds:
switch# configure terminal switch(config)# lldp holdtime 200 switch(config)#
This example shows how to enable LLDP to send or receive the management address TLVs:
switch# configure terminal switch(config)# lldp tlv-select management-address switch(config)#
This example shows how to set an interface to transmit LLDP packets:
switch# configure terminal
switch(config)# interface ethernet 1/2
switch(config-if)# lldp transmit
This example shows how to configure an interface to disable LLDP:
switch# configure terminal
switch(config)# interface ethernet 1/2
switch(config-if)# no lldp transmit
switch(config-if)# no lldp receive
This example shows how to display LLDP interface information:
switch# show lldp interface ethernet 1/2
tx_enabled: TRUE
rx_enabled: TRUE
dcbx_enabled: TRUE
Port MAC address: 00:0d:ec:a3:5f:48
Remote Peers Information
No remote peers exist
This example shows how to display LLDP neighbor information:
switch# show lldp neighbors LLDP Neighbors Remote Peers Information on interface Eth1/40 Remote peer's MSAP: length 12 Bytes: 00 c0 dd 0e 5f 3a 00 c0 dd 0e 5f 3a LLDP TLV's LLDP TLV type:Chassis ID LLDP TLV Length: 7 LLDP TLV type:Port ID LLDP TLV Length: 7 LLDP TLV type:Time to Live LLDP TLV Length: 2 LLDP TLV type:LLDP Organizationally Specific LLDP TLV Length: 55 LLDP TLV type:LLDP Organizationally Specific LLDP TLV Length: 5 LLDP TLV type:END of LLDPDU LLDP TLV Length: 0 Remote Peers Information on interface Eth1/34 Remote peer's MSAP: length 12 Bytes: 00 0d ec a3 27 40 00 0d ec a3 27 69 LLDP TLV's LLDP TLV type:Chassis ID LLDP TLV Length: 7 LLDP TLV type:Port ID LLDP TLV Length: 7 LLDP TLV type:Time to Live LLDP TLV Length: 2 LLDP TLV type:LLDP Organizationally Specific LLDP TLV Length: 55 LLDP TLV type:LLDP Organizationally Specific LLDP TLV Length: 5 LLDP TLV type:END of LLDPDU LLDP TLV Length: 0 Remote Peers Information on interface Eth1/33 Remote peer's MSAP: length 12 Bytes: 00 0d ec a3 27 40 00 0d ec a3 27 68 LLDP TLV's LLDP TLV type:Chassis ID LLDP TLV Length: 7 LLDP TLV type:Port ID LLDP TLV Length: 7 LLDP TLV type:Time to Live LLDP TLV Length: 2 LLDP TLV type:LLDP Organizationally Specific LLDP TLV Length: 55 LLDP TLV type:LLDP Organizationally Specific LLDP TLV Length: 5 LLDP TLV type:END of LLDPDU LLDP TLV Length: 0
This example shows how to display the system details about LLDP neighbors:
switch# sh lldp neighbors system-detail Capability codes: (R) Router, (B) Bridge, (T) Telephone, (C) DOCSIS Cable Device (W) WLAN Access Point, (P) Repeater, (S) Station, (O) Other Device ID Local Intf Chassis ID PortID Hold-time Capability switch-2 Eth1/7 0005.73b7.37ce Eth1/7 120 B switch-3 Eth/9 0005.73b7.37d0 Eth1/9 120 B switch-4 Eth1/10 0005.73b7.37d1 Eth1/10 120 B Total entries displayed: 3
This example shows how to display LLDP timer information:
switch# show lldp timers
LLDP Timers
holdtime 120 seconds
reinit 2 seconds
msg_tx_interval 30 seconds
This example shows how to display information about LLDP counters:
switch# show lldp traffic
LLDP traffic statistics:
Total frames out: 8464
Total Entries aged: 6
Total frames in: 6342
Total frames received in error: 2
Total frames discarded: 2
Total TLVs unrecognized: 0
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