Configuring for Network Management Applications

LLDP (Link-Layer Discovery Protocol)

Spanning-Tree Blocking. Spanning tree does not prevent LLDP packet transmission or receipt on STP-blocked links.

802.1X Blocking. Ports blocked by 802.1X operation do not allow transmission or receipt of LLDP packets.

Configuring LLDP Operation

In the default configuration, LLDP is enabled and in both transmit and receive mode on all active ports. The LLDP configuration includes global settings that apply to all active ports on the switch, and per-port settings that affect only the operation of the specified ports.

The commands in this section affect both LLDP and LLDP-MED operation. for information on operation and configuration unique to LLDP-MED, refer to “LLDP-MED(Media-Endpoint-Discovery)” on page 13-55.

Command

Page

 

 

show lldp config

13-46

[no] lldp run

13-46

lldp refresh-interval

13-47

lldp holdtime-multiplier

13-48

lldpTxDelay

13-48

lldpReinitDelay

13-49

lldp enable-notification

13-50

lldpnotificationinterval

13-51

lldp admin-status < txonly rxonly tx_rx disable >

13-51

lldp config < port-list> IpAddrEnable

13-52

lldp config < port-list> basicTlvEnable

13-53

lldp config < port-list> dot3TlvEnable < macphy_config >

13-55

 

 

Viewing the Current ConfigurationDisplaying the Global LLDP, Port Admin, and SNMP Notification

Status. This command displays the switch’s general LLDP configuration status, including some per-port information affecting advertisement traffic and trap notifications.

Syntax show lldp config

13-44