Configure Basic Parameters of Loopback Detection
Configuration Condition
None
Configure Sending Period of Loopback Detection Packets
In loopback detection, loopback detection packets are sent periodically to detect loops in the network. You can modify the interval at which loopback detection packets are sent according to the actual network requirement.
Table 10-4 Configure the sending period of the loopback detection packets
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Step
|
Command
|
Description
|
|
Enter the global configuration mode.
|
configure terminal
|
-
|
|
Enter the L2/L3 Ethernet interface configuration mode.
|
interface interface-name
|
Either
After entering the L2 Ethernet interface configuration mode, the subsequent configuration takes effect only on the current Ethernet interface. After entering the aggregation group configuration mode, the subsequent configuration takes effect only on the aggregation group.
|
|
Enter the aggregation group configuration mode.
|
interface link-aggregation link-aggregation-id
|
| Configure the interval at which loopback detection packets are sent. |
loopback-detection enable interval-time interval-time-value
|
Mandatory.
By default, the interval at which loopback detection packets are sent is 30 seconds.
|
Configure Error-Disable Action of Ethernet Interface
If the Ethernet interface allows the Error-Disable action, the Ethernet interface is controlled. After a port detects a loop, it performs the Error-Disable action to close the Ethernet interface so as to eliminate the loop. If the Ethernet interface is not in the controlled status, the Ethernet interface only prints loop prompt message instead of closing the Ethernet interface. In this case, the loop has not been eliminated.
Table 10-5 Configuring the Error-Disable Action on the Ethernet interface
|
Step
|
Command
|
Description
|
|
Enter the global configuration mode.
|
configure terminal
|
-
|
|
Enter the L2/L3 Ethernet interface configuration mode.
|
interface interface-name
|
Either
After entering the L2/L3 Ethernet interface configuration mode, the subsequent configuration takes effect only on the current Ethernet interface. After entering the aggregation group configuration mode, the subsequent configuration takes effect only on the aggregation group.
|
|
Enter the aggregation group configuration mode.
|
interface link-aggregation link-aggregation-id
|
| Configure whether the Ethernet interface allows the Error-Disable function. |
loopback-detection enable control |
Mandatory.
By default, after the Ethernet interface detects a loop, it performs the Error-Disable action.
|
Switch
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