Protocoll problems, may be. Need Help!!!

c-henrich · ‎03-24-2003

I have 2 Cisco 2600 which are connected via serial (Hardware: PowerQuicc) Interfaces. They have a DSU-Modem with a t1 Connection. I testet Hardware-Loops on both sites going over the hole line and all of them worked fine. Both interfaces are sending HDLC packetes, but thy doesn't get any Input. So I doesn't know where the Problems are! the Line is testet without errors, and a protokoll is not running.

May be some of you can help me......

rwiesmann · ‎03-24-2003

Hi

So you're saying that the Layer 2 should be o.k?

Can you test if cdp ist working fine?

Just give on both sides on the serial interfaces "cdp enable".

And then you can check with "show cdp neighbors".....do you see any neighbor then?

Regards

Roger

c-henrich · ‎03-24-2003

Layer 2 isn't ok, but why??

CDP is enabled, but not working!!

Layer2 is ReqSent or Listen

deilert · ‎03-24-2003

if l2 status is reqsent , then the encap on one side is set to ppp

c-henrich · ‎03-24-2003

ups sorry, i had ppp on both siedes configured, but that also wasn't working!

Actual HDLC is configured and a debug shows that HDLC-packages were send but without a response....

deilert · ‎03-24-2003

What is the set up on both ends ?

internal or external CSU ?

router and csu configs?

look at a sh ver and make sure you do not have this t1 plugged in to an async interface , these serial interfaces can only support up to 128 KB .

c-henrich · ‎03-24-2003

external CSU

on the interface is only ip address and encap configured

I don't know the configuration of the csu, but it shoul be correct!!

the t1 is plugged into the csu-Modem and this goes out with a x25 to the router into the serial PowerQuicc

"Dte V.35 TX and RX clocks detectet" on both sites

deilert · ‎03-24-2003

when you do a sh ver does it show async interfaces ?

c-henrich · ‎03-24-2003

no the sh ver only shows

--- 3 serial network interface(s)

--- 2 t1 Chanelized pri port

but my line is not connectet to one of the t1!!!

deilert · ‎03-24-2003

your t1 is connected to a serial interface or a chanelized t1 interface ?

c-henrich · ‎03-24-2003

the t1 from my Provider is going to Modem (CSU) and this is connected to the (standard) serial port on my router NOT to the T1 Interface

deilert · ‎03-24-2003

do you have access to both CSU's ? are they set for ESF B8ZS ?

What can the provider loop ?

If they give you a loop on towards one of your routers do you see the interface g up up (looped) ? you should see this .

c-henrich · ‎03-24-2003

i don't have have access to the csu's

and my provider gave me loops, and i saw them all good and with no errors or crc's

as far i know framing is not B8ZS because of the provider standart, but this should not the problem. My Provider made an end-to-end test with optimal results!

deilert · ‎03-24-2003

When they gave you loops you saw the interface go up up (looped) ?

What is the config for the serial interface on each side .

c-henrich · ‎03-24-2003

Yes the interfaces went up up(looped), and a ping test showed now errors or CrC's. So the line from my Provider seems to be good!

And on the Interface is only an IP-Address and an encapsulation configured