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A Cisco router with default values has been connected through a serial line to another non-Cisco router configured with point-to-point encapsulation "HDLC". Both routers are in a down/down state, what can be done to solve the problem?

Verify the IP subnet on both routers match.

Change the encapsulation of the non-Cisco to PPP.

Check the serial cabling.

Perform a "no shut" in the interface connecting both routers.



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