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Cisco SCE 8000 10GBE Software Configuration Guide
OL-30621-02
Chapter 6 Global Configuration
Configuring Cisco Discovery Protocol
To reenable CDP after disabling it, use the following command.
From the SCE(config)# prompt, type:
Note
By default, when you enable CDP, it is set to bypass mode. To change the mode, see
Setting CDP Mode
The Cisco SCE 8000 is usually installed as a bump-in-the-wire device, and therefore forwards packets
(including CDP packets) from one interface to the corresponding interface, whereas a typical Cisco
device never forwards CDP packets from one interface to another interface. Therefore, the Cisco SCE
8000 extends the enabled state with the following three CDP modes:
•
standard—function as a typical CDP device
•
monitor—monitor the CDP packets
•
bypass—bypass the CDP packets
(See
“CDP Operational Modes on the Cisco SCE 8000” section on page 6-21
for a description of the
different CDP modes.)
Caution
In cascade topologies, both Cisco SCE 8000 platforms must be configured to the same CDP mode.
By default, the CDP mode is set to bypass.
To reset the CDP mode to the default mode (bypass) use the
default cdp mode
command.
To change the CDP mode, use the following command in global configuration mode.
From the SCE(config)# prompt, type:
Enabling CDP on a Specific Traffic Interface
By default, CDP is enabled on all traffic interfaces (see
“CDP Limitations on the Cisco SCE 8000”
To disable CDP on a specific interface, use the
no cdp enable
command in the appropriate interface
configuration mode.
To reenable CDP on a specific interface after disabling it, use the following command in the appropriate
interface configuration mode. CDP must be enabled globally on the Cisco SCE 8000 platform (
cdp run
command) in order to enable a specific interface.
From the SCE(config if)# prompt, type:
Command
Purpose
cdp run
Enables CDP.
Command
Purpose
cdp mode (standard | monitor | bypass)
Changes the CDP mode.