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Cisco CATALYST 2960 User Manual

Cisco CATALYST 2960
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25-2
Catalyst 2960 and 2960-S Switches Software Configuration Guide, Release 15.0(1)SE
OL-26520-01
Chapter 25 Configuring CDP
Configuring CDP
On the switch, CDP enables Network Assistant to display a graphical view of the network. The switch
uses CDP to find cluster candidates and maintain information about cluster members and other devices
up to three cluster-enabled devices away from the command switch by default.
For a switch and connected endpoint devices running Cisco Medianet
CDP identifies connected endpoints that communicate directly with the switch.
To prevent duplicate reports of neighboring devices, only one wired switch reports the location
information.
The wired switch and the endpoints both send and receive location information.
For information, go to:
http://www.cisco.com/en/US/docs/ios/netmgmt/configuration/guide/nm_cdp_discover.html.
The switch supports CDP Version 2.
CDP and Switch Stacks
A switch stack appears as a single switch in the network. Therefore, CDP discovers the switch stack, not
the individual stack members. The switch stack sends CDP messages to neighboring network devices
when there are changes to the switch stack membership, such as stack members being added or removed.
Configuring CDP
These sections contain this configuration information:
Default CDP Configuration, page 25-2
Configuring the CDP Characteristics, page 25-3
Disabling and Enabling CDP, page 25-3
Disabling and Enabling CDP on an Interface, page 25-4
Default CDP Configuration
Table 25-1 shows the default CDP configuration.
Table 25-1 Default CDP Configuration
Feature Default Setting
CDP global state Enabled
CDP interface state Enabled
CDP timer (packet update frequency) 60 seconds
CDP holdtime (before discarding) 180 seconds
CDP Version-2 advertisements Enabled

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Cisco CATALYST 2960 Specifications

General IconGeneral
ManageableYes
StackingNo
ModelCatalyst 2960 Series Switches
Power over Ethernet (PoE)Available on some models (IEEE 802.3af)
VLANs255 active VLANs
FeaturesQoS
Operating Temperature32 to 113°F (0 to 45°C)
Relative Humidity10% to 85% non-condensing
Power ConsumptionVaries by model (30W to 400W)

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