Cisco ASR 900 Series Configuration Manual - Page 2
Browse online or download pdf Configuration Manual for Switch Cisco ASR 900 Series. Cisco ASR 900 Series 19 pages. Configuring 1g traffic on 8-port 10 gigabit
ethernet interface module
Also for Cisco ASR 900 Series: Configuration Manual (13 pages), Configuration Manual (6 pages), Configuration Manual (6 pages)
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Revised: November 30, 2017,
Cisco Discovery Protocol Version 2
Cisco Discovery Protocol (formerly known as CDP) is a Layer 2, media-independent, and network-independent protocol that runs
on Cisco devices and enables networking applications to learn about directly connected devices nearby. This protocol facilitates the
management of Cisco devices by discovering these devices, determining how they are configured, and allowing systems using
different network-layer protocols to learn about each other.
This module describes Cisco Discovery Protocol Version 2 and how it functions with Simple Network Management Protocol
(SNMP).
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.
Prerequisites for Using Cisco Discovery Protocol
• Interfaces must support Subnetwork Access Protocol (SNAP) headers.
Restrictions for Using Cisco Discovery Protocol
• Cisco Discovery Protocol functions only on Cisco devices.
• Cisco Discovery Protocol is not supported on Frame Relay multipoint subinterfaces.
• If a neighbor has no IP address on an interface enabled with Cisco Discovery Protocol, the IP address of another interface will
be updated as IP address for the non-IP address interface.
Information About Using Cisco Discovery Protocol
VLAN Trunking Protocol
VLAN Trunking Protocol (VTP) is a discovery technique used by switches. A switch advertises its management domain, configuration
revision number, VLANs, and their specific parameters on its trunk ports. A VTP domain is made up of a single device or interconnected
devices that share the same VTP domain name. A switch can belong to only one VTP domain.
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