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Configuring for Network Management Applications
CDP
CDP
CDP Features
Feature Default Menu CLI Web
view the switch’s CDP configuration n/a — page 13-32 —
view the switch’s CDP Neighbors table n/a — page 13-32 —
clear (reset) the CDP Neighbors table n/a — page 13-33 —
enable or disable CDP on the switch enabled — page 13-34 —
enable or disable CDP operation on an enabled — page 13-35 —
individual port
change the transmit interval for the switch’s
CDP packets
60 seconds — page 13-36 —
change the hold time (time-to-live for CDP
packets the switch generates)
180 seconds — page 13-36 —
Introduction
In the switches covered in this guide, CDP-v1 (Cisco Discovery Protocol,
version 1) provides data that aids SNMP-based network mapping utilities
designed to discover devices running CDP in a network. To make this data
available, the switch transmits information about itself via CDP packets to
adjacent devices, and also receives and stores information about adjacent
devices running CDP. This enables each CDP device to receive and maintain
identity data on each of its CDP neighbors and pass this information off to an
SNMP utility designed to query the CDP area of the device’s MIB.
Note
To take advantage of CDP in the switch, you should have a working knowledge
of SNMP operation and an SNMP utility capable of polling the switches for
CDP data. HP’s implementation of CDP places specific data into the switch’s
Management Information Base (MIB). However, retrieval of this data for
network mapping is dependent on the operation of your SNMP utility. Refer
to the documentation provided with the utility.
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