Reference Guide

596 | Link Layer Discovery Protocol
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In Figure 26-10, LLDP is enabled globally. R1 and R2 are transmitting periodic LLDPDUs that contain
management, 802.1, and 802.3 TLVs.
Figure 26-10. Configuring LLDP
Viewing the LLDP Configuration
Display the LLDP configuration using the command show config in either CONFIGURATION or
INTERFACE mode, as shown in Figure 26-11 and Figure 26-12, respectively
2 Advertise one or more TLVs. Include the keyword for
each TLV you want to advertise.
• For management TLVs: system-capabilities,
system-description
• For 802.1 TLVs: port-protocol-vlan-id,
port-vlan-id, vlan-name
• For 802.3 TLVs: max-frame-size, power-via-mdi
• For TIA-1057 TLVs:
•guest-voice
•guest-voice-signaling
•location-identification
•power-via-mdi
•softphone-voice
•streaming-video
•video-conferencing
•video-signaling
•voice
•voice-signaling
advertise {management-tlv |
dot1-tlv | dot3-tlv | med}
PROTOCOL
LLDP
*
*
Note: vlan-name is supported on C-Series and S-Series only.
Step Task Command
Command
Mode
2/11
1/21
fnC0074mp
LLDPDU
R1
R2
R2(conf)#protocol lldp
R2(conf-lldp)#no disable
R2(conf-lldp)#advertise management-tlv system-capabilities system-description
R2(conf-lldp)#ad dot1-tlv vlan-name
R2(conf-lldp)#max-frame-size
R1(conf)#protocol lldp
R1(conf-lldp)#no disable
R1(conf-lldp)#advertise management-tlv system-capabilities system-descripti
on
R1(conf-lldp)#ad dot1-tlv vlan-name
R1(conf-lldp)#max-frame-size
R2(conf)#int gig 2/11
R2(conf-if-gi-2/11)# switchport
R2(conf-if-gi-2/11)#no shut
R1(conf)#int gig 1/21
R1(conf-if-gi-1/21)# switchport
R1(conf-if-gi-1/21)#no shut