Issue with Serial interface up

[rapyoke21]

Hi, I am very new to Cisco, so please bear with me

I purchased two 2500 series routers on ebay and connected the two with a serial cable the seller included. I have assigned 10.1.1.1/24 to Serial1 on Router 1, and assigned 10.1.1.2/24 to Serial1 on Router 2. Both are HDLC, and both have the same issue in debug mode (myseq count goes up every few seconds, mineseen and yourseen stay at zero.

I would be more than willing to post any screenshots if needed. Thank you to anybody who answers.

Peter

[rapyoke21]

And just to clarify the issue, the interface is up but the line protocol is down (on both routers).

[johnlloyd_13]

Hi Peter,

Did you add the clock rate interface command on the router acting as the DCE? You can verify which one is DCE or DTE by issuing the show controller serial x command. Refer sample config below:

int serial x

clock rate 64000

Sent from Cisco Technical Support iPhone App

[smogra]

Hi,

Please check this table 15.1 in the below document:

http://www.cisco.com/en/US/docs/internetworking/troubleshooting/guide/tr1915.html#wp1020563

This will help you in understanding why the serial interface is showing up/down status.

Cheers

Sweta

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