Cisco 2600 Problem

[visionIT]

How can you tell if you are having a problem with a T-1 WIC card or the router is having problems? The reason I ask is the frame relay provider said it was an equipment issue but I am not sure how to test that or get the bottom of the problem. I am thinking it is a bad T-1 WIC Card. Is there a way to test that theory.

Thanks,
Jeff

 

[stevensavage]

Jeff

log in to the router and run show interfaces interfacenumber

e.g.
show interfaces serial0

Check the status of the first line - if all is well it should see Serial0 is up, line protocol is up.

If both are down, the card is not working or the cable is wrong.

If physical is up and line protocol is down then there is a config problem - keepalive mismatch, incorrect clock rate or encapsulation mismatch

Steve

 

[visionIT]

Everything is showing up. Both Line and Physical.

 

[stevensavage]

The up, up status indicates that the interface is passing traffic. Have you got a serial subinterface - e.g. serial 0/0.1?

That is the interface you need to be checking -
It would be worthwhile asking your provider to check out your MTU if you have not already

 

[Jynxx]

Carriers will almost always say that it is the customer equipment as a cop out.

Have them loop up their smartjack. If that is successful, have them send you a loop to your router.

When they say that they have you looped,

type: show int interface

Where interface is your serial port, such as s1/0.

If you see anything other than "loopback not set" under the interface, then you are likely seeing their loop and it should work fine.

Another thing that you can do is to send them a loopback and see if they see it.

Go in to config terminal mode

Go in to the interface

Type: loop line

Then ask them if they can see your loop. If they do, then all is well. If they don't, then it could STILL be them.

Next thing that you can do is to take an RJ45 wall jack (female. the one that you punch the individual wires on), and cross connect with 2 pieces of shielded wire, pins 2 and 5 and pins 1 and 4. Then plug that in to the T1 cable.

If they can't see that, then it is either them or the cable. If you want to rule out the cable, plug a straight through Ethernet patch cable in to the connector that you made, and plug that directly in to their smartjack (removing the T1 cable that goes to your router).

If they can't see that, then it is definately their equipment. If they see those, and still don't see your router, plug the cable and connector in to your WIC port and see if the router sees the loop. If it doesn't, then it is toast.

Generally it would be the module, not the router itself. If you want to rule that out, move the module to the other slot, configure it up, and see what happens.