Thanks guys for the reply. I will elaborate more.
The router has many VCs. Only one VC has the problem and it's a DS-3
connecting to the Cabletron SSR 8600, the main feed. It is the only VCs
constantly accumulating CRCs and Length errors. All other VCs to the
sub-sites have zero errors.
Here is a sample of the errors:
Hardware is RS8234 ATM DS3
Description: Uplink to ICN
Internet address is 207.165.237.22/30
MTU 4470 bytes, BW 12146 Kbit, DLY 190 usec,
reliability 255/255, txload 19/255, rxload 26/255
Encapsulation ATM
21403245 packets input, 13217734694 bytes
115262297 packets output,13745159548 bytes
0 OAM cells input, 0 OAM cells output
AAL5 CRC errors : 318996
AAL5 SAR Timeouts : 1
AAL5 Oversized SDUs : 0
AAL5 length violation : 318210
AAL5 CPI Error : 0
And finally, when I do a debug of atm errors, no errors show. TIA!
Marc Quibell
"Daniel Cotts" wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> 1) Is this a new install or has it worked in the past? If it worked in the
> past, you can eliminate a lot of configuration causes.
> 2) Assuming that it worked in the past, has anyone changed anything in the
> config or operating system of either end?
> 3) Consider physical layer issues. Can you take the circuit off line and
> test end to end for errors? Can your Service Provider help?
> 4) Can you loop back your own output to verify your box?
> 5) If you have a spare box can you create a back-to-back lab to test your
> box? If that works, can you ship the spare box to the other end to
> substitute for the Cabletron?
> 6) Bet that there are show and debug outputs that will help.
> Let us know what the cause was.
>
> > -----Original Message-----
> > From: Q [mailto:[EMAIL PROTECTED]]
> > Sent: Tuesday, May 08, 2001 4:23 PM
> > To: [EMAIL PROTECTED]
> > Subject: ATM AAL5 errors [7:3682]
> >
> >
> > I'm getting AAL5 CRC and AAL5 Length errors. They are both tied to one
> > another in terms of rate of errors. This is a difficult
> > problem in terms
> > that they are both related. One problem is that the other
> > sidce of the WAN
> > is a Cabletron SSR 8600 hunk oof crap. Someone give me a clue...TIA!
> >
> > marc
> > FAQ, list archives, and subscription info:
> > http://www.groupstudy.com/list/cisco.html
> > Report misconduct
> > and Nondisclosure violations to [EMAIL PROTECTED]
> FAQ, list archives, and subscription info:
http://www.groupstudy.com/list/cisco.html
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