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Related Documentation
Configuring LLDP-MED (CLI Procedure)
Link Layer Discovery Protocol–Media Endpoint Discovery (LLDP-MED) is an extension of LLDP. The EX Series switch uses LLDP-MED to support device discovery of VoIP telephones and to create location databases for these telephone locations.
LLDP-MED is turned on by default on EX Series switches.
This topic describes:
- Enabling LLDP-MED on Interfaces
- Configuring Location Information Advertised by the Switch
- Configuring for Fast Start
Enabling LLDP-MED on Interfaces
LLDP-MED is enabled on all interfaces by default. If it is disabled, you can enable LLDP-MED by configuring it on all interfaces or on specific interfaces.
 | Note: On switches running Junos OS for EX Series switches with support for the Enhanced Layer 2 Software (ELS) configuration style, configure LLDP-MED on the physical interface–for example, on ge-0/0/2. For more about ELS, see Getting Started with Enhanced Layer 2 Software. |
To configure LLDP-MED on all interfaces or on a specific interface:
[edit protocols lldp-med]
user@switch# set interface (LLDP-MED) ge-0/0/2.0 Configuring Location Information Advertised by the Switch
You can configure the location information that is advertised from the switch to the LLDP-MED device. You can specify a civic-based location (geographic location) or a location based on an ELIN (Emergency Location Identification Number):
- To specify a location by geography:
[edit protocols lldp-med]
user@switch# set interface ge-0/0/2.0 location civic-based country-code USuser@switch# set interface ge-0/0/2.0 location civic-based ca-type 1 ca-value “El Dorado County”user@switch# set interface ge-0/0/2.0 location civic-based ca-type 2 ca-value CAuser@switch# set interface ge-0/0/2.0 location civic-based ca-type 3 ca-value Somersetuser@switch# set interface ge-0/0/2.0 location civic-based ca-type 6 ca-value “Mount Aukum Road”user@switch# set interface ge-0/0/2.0 location civic-based ca-type 19 ca-value 6450user@switch# set interface ge-0/0/2.0 location civic-based ca-type 21 ca-value “Holiday Market” - To specify a location using an elin string:
[edit protocols lldp-med]user@switch# set interface ge-0/0/2.0 location elin 4085551212
Configuring for Fast Start
You can specify the number of LLDP-MED advertisements sent from the switch in the first second after it has detected an LLDP-MED device. The default is 3; to set it to another value:
[edit protocols lldp-med]
user@switch# set fast-start 6 | Note: If an interface is configured as a VoIP interface, then the switch does not wait for an attached phone to identify itself as an LLDP-MED device before it performs an LLDP-MED fast start after a graceful Routing Engine switchover (GRES) or a reboot. Instead, it immediately performs an LLDP-MED fast start after a GRES or reboot. This behavior prevents certain models of IP phones from resetting after a GRES. |
