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28-1
Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide
OL-23826-09
28
Configuring Link Layer Discovery Protocol
This feature module describes how to configure Link Layer Discovery Protocol (LLDP) on the Cisco
ASR 901 Aggregation Series Router. The Cisco Discovery Protocol (CDP) is a device discovery protocol
that runs over the data-link layer (Layer 2) on all Cisco-manufactured devices (routers, bridges, access
servers, and switches). CDP allows network management applications to automatically discover and
learn about other Cisco devices that are connected to the network.
To permit the discovery of non-Cisco devices, Cisco ASR 901supports LLDP, a vendor-neutral device
discovery protocol that is defined in the IEEE 802.1ab standard. LLDP allows network devices to
advertise information about themselves to other devices on the network.
Finding Feature Information
Your software release may not support all the features documented in this module. For the latest feature
information and caveats, see 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 for LLDP” section on page 28-8.
Use Cisco Feature Navigator to find information about platform support and Cisco software image
support. To access Cisco Feature Navigator, go to http://www.cisco.com/go/cfn. An account on
Cisco.com is not required.
Contents
• Restrictions for LLDP, page 28-2
• Overview of LLDP, page 28-2
• How to Configure LLDP, page 28-2
• Configuration Example for LLDP, page 28-4
• Where to Go Next
• Additional References, page 28-7
• Feature Information for LLDP, page 28-8