Router#test interfaces serial 0

[aadilovic]

Hi, i get this message when testing the serial 0 interface:

Router#test interfaces serial 0

... Failed - timeout problem

What could it be?

Thx

[jbohla]

I think you have to increase the time-out if the device is remote, and reduce time-out errors if the problem is on the network.

[mohammedmahmoud]

Hi,

The test interfaces EXEC command is intended for the factory checkout of network interfaces. It is not intended for diagnosing problems with an operational router, i've used it and i got the same results you've got. The test interfaces output does not report correct results if the router is attached to a "live" network. For each network interface that has an IP address that can be tested in loopback (MCI and ciscoBus Ethernet and all serial interfaces), the test interfaces command sends a series of ICMP echoes. Error counters are examined to determine the operational status of the interface.

http://www.cisco.com/en/US/products/ps6350/products_command_reference_chapter09186a0080444c52.html#wp1039111

HTH,

Mohammed Mahmoud.