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Cisco SFS 7000 Series Product Family Command Reference Guide
OL-9163-02
Chapter6 Show Commands
show cdp
show cdp
Display the Cisco Discovery Protocol (CDP) advertisement information, with the
show cdp
command.
show cdp
Syntax Description This command has no arguments or keywords.
Defaults CDP is running when the chassis boots.
Command Modes User Execute mode, Privileged Execute mode.
Usage Guidelines Platform Availability:
Cisco SFS 3001, Cisco SFS 7000, Cisco SFS 7008, Cisco SFS 3012, Cisco 4x InfiniBand Switch Module
for IBM BladeCenter
Privilege Level:
Unrestricted read-write user.
Cisco Discovery Protocol (CDP) obtains protocol addresses of neighboring devices and discovers the
platform of those devices. Using it with the MIB database allows applications to learn the d evice and the
SNMP agent address of neighboring devices. CDP uses the CISCO-CDP-MIB.
Each device configured for CDP sends periodic messages, known as advertisements, to a multicast
address. Each device advertises at least one address at which it can receive SNMP messages.
Advertisements also contain time-to-live, or hold time, information, that indicates the length of time that
a receiving device holds CDP information before discarding it. Each device also listens to the CDP
messages sent by others to learn when the media interfaces of neighb oring d evices g o up o r d own.
CDP Version-2 is the latest release of the protocol. W ith CDP Version-2, detailed information is provided
on the VLAN Trunking Protocol (VTP) management domain and duplex modes of ne ighbo r d evices,
CDP-related counters, and VLAN IDs of connecting ports. This help s Ether net gateway configurat ion.
CDP is run on server switches over both management-Ethernet and management-IB int erfaces .
Examples The following example displays the CDP advertisement information:
SFS-7000P# show cdp
================================================================================
CDP Information
================================================================================
run : false
message-interval : 60
hold-time : 180
device-id : SFS(00:05:ad:01:5f:f2)