Switching Mios; Busying Out A Dpc - Cisco ASR 5500 Administration Manual

Troubleshooting

Switching MIOs

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.
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.
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.
Step 1 Initiate a manual MIO/UMIO switch over by entering the following command:
host_name
[local]
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/UMIO just switched. Its state should be Standby.

Busying Out a DPC

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.
Step 1
Initiate a busy-out by entering the following command:
host_name
[local]
You will receive the following prompt:
Are You Sure? [Yes|No]:
Step 2
Press Y to start the switchover.
Step 3 Verify that the busy-out 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 DPC/UDPC just busied-out. Its state should be Standby.
card switch from <5 or 6> to <6 or 5>
#
card busy-out slot_number
#
ASR 5500 System Administration Guide, StarOS Release 19
Switching MIOs
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