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New Member

T1 Down - Serial Up / Line Protocol Down

Hello,

We have a new T1 circuit that was tested out by the engineer as working. The Telco sent us an adtran router, but we are going to use a cisco router instead. We cannot get it to come up for more than a second. They are saying the circuit it fine, but we cannot get it to work.

I am attaching output of show ip int brief, show int ser 0/0 and the config on the cisco, and the config they gave us on the adtran. Everything seems fine, the circuit comes up for about 2 seconds, then drops again.

This is the log output:

01:36:13: Serial0/0(out): StEnq, myseq 125, yourseen 0, DTE down

01:36:23: Serial0/0(out): StEnq, myseq 126, yourseen 0, DTE down

01:36:24: Serial0/0: attempting to restart

01:36:33: Serial0/0(out): StEnq, myseq 127, yourseen 0, DTE down

01:36:43: Serial0/0(out): StEnq, myseq 128, yourseen 0, DTE down

01:36:53: Serial0/0(out): StEnq, myseq 129, yourseen 0, DTE down

01:36:54: Serial0/0: attempting to restart

01:37:03: Serial0/0(out): StEnq, myseq 130, yourseen 0, DTE down

01:37:13: Serial0/0(out): StEnq, myseq 131, yourseen 0, DTE down

01:37:23: Serial0/0(out): StEnq, myseq 132, yourseen 0, DTE down

01:37:24: Serial0/0: attempting to restart

01:37:33: Serial0/0(out): StEnq, myseq 133, yourseen 0, DTE down

01:37:43: Serial0/0(out): StEnq, myseq 134, yourseen 0, DTE down

01:37:53: Serial0/0(out): StEnq, myseq 135, yourseen 0, DTE down

01:37:54: Serial0/0: attempting to restart

01:38:03: Serial0/0(out): StEnq, myseq 136, yourseen 0, DTE down

01:38:13: Serial0/0(out): StEnq, myseq 137, yourseen 0, DTE down

01:38:23: Serial0/0(out): StEnq, myseq 138, yourseen 0, DTE down

01:38:24: Serial0/0: attempting to restart

01:38:33: Serial0/0(out): StEnq, myseq 139, yourseen 0, DTE down

Attempts:

Changing clock (line, and internal)

Changing encap from frame-relay to frame-relay ietf.

Changing encap to ppp

Any ideas on why I cannot get it to come up?

Thanks,

T

1 ACCEPTED SOLUTION

Accepted Solutions
New Member

Re: T1 Down - Serial Up / Line Protocol Down

Is the a wic-1dsu-t1 interface? if so you will specify the linecode, frameing, and timeslots, clocking should be from the line or external, and encapsulation on the main interface. on the subinterface specify the dlci and the ip addressing.

Or doit all on the main with no sub interface.

3 REPLIES
New Member

Re: T1 Down - Serial Up / Line Protocol Down

Problem Solved - I had to set the no keepalive option.

New Member

Re: T1 Down - Serial Up / Line Protocol Down

Is the a wic-1dsu-t1 interface? if so you will specify the linecode, frameing, and timeslots, clocking should be from the line or external, and encapsulation on the main interface. on the subinterface specify the dlci and the ip addressing.

Or doit all on the main with no sub interface.

New Member

Re: T1 Down - Serial Up / Line Protocol Down

The keepalive had to be turned back on in the end. What happened was Verizon did not activate the line, they said it was. I opened a trouble ticket, and they stated it was active, no problem. After further investigation, they said they did not have it activated. All is well and working now. Thanks for your help.

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