Cisco Cisco Packet Data Interworking Function (PDIF)
Troubleshooting
Taking Corrective Action ▀
ASR 5500 System Administration Guide, StarOS Release 16 ▄
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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.
Switching MIO/UMIOs
When the system boots up, the MIO/UMIO installed in chassis slot 5 will boot into the Active mode and begin booting
other system components. The MIO/UMIO installed in chassis slot 6 will automatically be booted into Standby mode
dictating that it will serve as a redundant component. The active MIO/UMIO automatically synchronizes currently
running tasks or processes with the standby MIO/UMIO.
other system components. The MIO/UMIO installed in chassis slot 6 will automatically be booted into Standby mode
dictating that it will serve as a redundant component. The active MIO/UMIO automatically synchronizes currently
running tasks or processes with the standby MIO/UMIO.
In the event of a critical failure on the MIO/UMIO in slot 5, system control will be automatically switched to the
standby MIO/UMIO in slot 6. This is a relatively seamless transition because the two are synchronized. The formerly
active MIO will then enter the standby mode allowing it to be safely replaced or restored.
standby MIO/UMIO in slot 6. This is a relatively seamless transition because the two are synchronized. The formerly
active MIO 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
switchover can be invoked by executing the following commands from the Exec mode prompt:
switchover can be invoked by executing the following commands from the Exec mode prompt:
[local]host_name#
Step 1
Initiate a manual MIO/UMIO switch over by entering the following command:
card switch from <5 or 6> to <6 or 5>
You will receive the following prompt:
Are You Sure? [Yes|No]:
Step 2
Press
Y
to start the switchover.
Step 3
Verify that the switchover was successful by entering the
show card table
command at the Exec mode prompt:
Check the entry in the Oper State column next to the MIO just switched. Its state should be Standby.
Busying Out a DPC/UDPC
This busy-out command moves processes from the source DPC/UDPC to the destination DPC/UDPC, or disables the
DPC/UDPC from accepting any new calls. When busy-out is enabled, the DPC/UDPC stops receiving new calls but
continues to process calls until they are completed. The command prompt is returned once the command is initiated.
The busy-out procedure is completed in background.
DPC/UDPC from accepting any new calls. When busy-out is enabled, the DPC/UDPC stops receiving new calls but
continues to process calls until they are completed. The command prompt is returned once the command is initiated.
The busy-out procedure is completed in background.
[local]host_name#
Step 1
Initiate a busy-out by entering the following command:
card busy-out slot_number