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Configuring for Network Management Applications
CDP
An SNMP utility can progressively discover CDP devices in a network by:
1. Reading a given device’s CDP Neighbor table (in the Management Infor-
mation Base, or MIB) to learn about other, neighbor CDP devices
2. Using the information learned in step 1 to go to and read the neighbor
devices’ CDP Neighbors tables to learn about additional CDP devices,
and so on
This section describes CDP operation in the switches covered in this guide.
For information on how to use an SNMP utility to retrieve the CDP information
from the switch’s CDP Neighbors table (in the switch’s MIB), refer to the
documentation provided with the particular SNMP utility. For information on
the object identifiers in the CDP MIB, see
“CDP Neighbor Data and MIB
Objects” on page 13-38.
CDP Terminology
■ CDP Device: A switch, server, router, workstation, or other device
running CDP.
■ CDP-Aware: A device that has CDP in its operating code (with CDP
either enabled or disabled in that device).
■ CDP-Disabled: A CDP-aware device on which CDP is currently
disabled.
■ Non-CDP Device: A device that does not have CDP in its operating
code.
■ CDP Neighbor: A CDP device that is either directly connected to
another CDP device or connected to that device by a non-CDP device,
such as some hubs.
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