Cisco Cisco Packet Data Interworking Function (PDIF) 故障排查指南
Troubleshooting the System
Taking Corrective Action ▀
Cisco ASR 5000 Series System Administration Guide ▄
OL-22970-01
Taking Corrective Action
In the event that an issue was discovered with an installed application or line card, depending on the severity, it may be
necessary to take corrective action.
necessary to take corrective action.
The system provides several redundancy and fail-over mechanisms to address issues with application and line cards in
order to minimize system downtime and data loss. These mechanisms are described in the sections that follow.
order to minimize system downtime and data loss. These mechanisms are described in the sections that follow.
Manually Initiating a Management Card Switchover
When the system boots up, the SMC installed in chassis slot eight will boot into the ―active‖ mode and begin booting
other system components. The SMC installed in chassis slot nine will automatically be booted into ―standby‖ mode
dictating that it will serve as a redundant component. However, the active SMC will frequently synchronize currently
running tasks or processes with the redundant SMC.
other system components. The SMC installed in chassis slot nine will automatically be booted into ―standby‖ mode
dictating that it will serve as a redundant component. However, the active SMC will frequently synchronize currently
running tasks or processes with the redundant SMC.
In the event of a critical failure on the SMC in slot eight, system control will be switched to the redundant SMC in slot
nine. This is a relatively seamless transition because the two are synchronized. The formerly active SMC will then enter
the standby mode allowing it to be safely replaced or restored.
nine. This is a relatively seamless transition because the two are synchronized. The formerly active SMC will then enter
the standby mode allowing it to be safely replaced or restored.
In the event that an issue arises that is not severe enough for the system to perform an automatic switchover, a manual
switch over can be invoked by executing the following instructions from the Exec mode prompt:
switch over can be invoked by executing the following instructions from the Exec mode prompt:
Step 1
Initiate a manual SMC switch over by entering one of the following commands:
For SMC:
You will receive the following prompt:
Step 2
Press to start the switchover.
Step 3
Verify that the switchover was successful by entering the following command at the prompt:
Check the entry in the Oper State column next to the SMC just switched. Its state should be Standby.