Cisco ASR 920 series Configuration Guide Ethernet Router

CHAPTER 15
Using Link Layer Discovery Protocol in
Multivendor Networks
Link Layer Discovery Protocol (LLDP), standardized by the IEEE as part of 802.1ab, enables standardized
discovery of nodes, which in turn facilitates future applications of standard management tools such as Simple
Network Management Protocol (SNMP) in multivendor networks. Using standard management tools makes
physical topology information available and helps network administrators detect and correct network
malfunctions and inconsistencies in configuration.
Media Endpoint Discovery (MED) is an LLDP enhancement that was formalized by the Telecommunications
Industry Association (TIA) for voice over IP (VoIP) applications.
The Cisco implementation of LLDP is based on the IEEE 802.1ab standard. This document describes LLDP
and LLDP-MED and how they are supported in Cisco software.
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Finding Feature Information, page 327
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Prerequisites for Using Link Layer Discovery Protocol in Multivendor Networks, page 328
•
Restrictions for Using Link Layer Discovery Protocol in Multivendor Networks, page 328
•
Information About Using Link Layer Discovery Protocol in Multivendor Networks, page 328
•
How to Configure Link Layer Discovery Protocol in Multivendor Networks, page 332
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Configuration Examples for Link Layer Discovery Protocol in Multivendor Networks, page 344
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Additional References for Using Link Layer Discovery Protocol in Multivendor Networks, page 346
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Feature Information for Link Layer Discovery Protocol in Multivendor Networks, page 347
Finding Feature Information
Your software release may not support all the features documented in this module. For the latest caveats and
feature information, see Bug Search Tool and the release notes for your platform and software release. To
find information about the features documented in this module, and to see a list of the releases in which each
feature is supported, see the feature information table.
Use Cisco Feature Navigator to find information about platform support and Cisco software image support.
To access Cisco Feature Navigator, go to www.cisco.com/go/cfn. An account on Cisco.com is not required.
Carrier Ethernet Configuration Guide (Cisco ASR 920 Series)
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Cisco ASR 920 series Specifications

General

Form Factor	1RU
Operating System	Cisco IOS XE
Model	ASR 920 series
Memory	4 GB DRAM
Power Supply	AC or DC
Storage Temperature	-40°C to 70°C (-40°F to 158°F)
Relative Humidity	5% to 95% non-condensing
MTBF	Varies by model
Management	CLI, SNMP