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### Instruction:
What is the purpose of the 'l2vpn switchover' command in Cisco IOS XR?
### Response:
The 'l2vpn switchover' command is used to manually switch the traffic from the primary pseudowire to the backup pseudowire in a VPWS service with pseudowire redundancy configured. This command is useful for testing the redundancy setup and for performing planned maintenance on the primary pseudowire or PE router.
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