27-3
Cisco Catalyst Switch Module 3110 and 3012 for IBM BladeCenter Software Configuration Guide
OL-12189-01
Chapter 27 Configuring LLDP and LLDP-MED
Configuring LLDP and LLDP-MED
• Location TLV
Provides location information from the switch to the endpoint device. The location TLV can send
this information:
–
Civic location information
Provides the civic address information and postal information. Examples of civic location
information are street address, road name, and postal community name information.
–
ELIN location information
Provides the location information of a caller. The location is determined by the Emergency
location identifier number (ELIN), which is a phone number that routes an emergency call to
the local public safety answering point (PSAP) and which the PSAP can use to call back the
emergency caller.
Note LLDP and LLDP-MED cannot operate simultaneously in a network. By default, a network device sends
only LLDP packets until it receives LLDP-MED packets from an endpoint device. The network device
then sends LLDP-MED packets until it receives only LLDP packets.
Configuring LLDP and LLDP-MED
This section contains this configuration information:
• Default LLDP Configuration, page 27-3
• Configuring LLDP Characteristics, page 27-4
• Disabling and Enabling LLDP Globally, page 27-4
• Disabling and Enabling LLDP on an Interface, page 27-5
• Configuring LLDP-MED TLVs, page 27-6
Default LLDP Configuration
Table 27-1 shows the default LLDP configuration. To change the default settings, use the LLDP global
configuration and LLDP interface configuration commands.
Table 27-1 Default LLDP Configuration
Feature Default Setting
LLDP global state Enabled
LLDP holdtime (before discarding) 120 seconds
LLDP timer (packet update frequency) 30 seconds
LLDP reinitialization delay 2 seconds
LLDP tlv-select Enabled to send and receive all TLVs.
LLDP interface state Enabled
LLDP receive Enabled
