In case the information is useful to anyone, it appears the MLP degradation
issue we were facing was due to nothing more than a bad line from Verizon.
There's still a mystery about why this platform is reporting our WIC-1ADSL
cards as PA-1C-P's, but I guess if it works, it works!
----- Original Message -----
From: "Adam Greene" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Wednesday, June 25, 2008 5:07 PM
Subject: [c-nsp] ATM multilink issue
Hi,
I am troubleshooting an ATM multilink issue.
The first (3) ATM lines I add to the bundle work great. I add a fourth
line, and performance degrades horribly.
I'm working with a 3640, 128MB RAM, 12.3(26), with the following cards:
- NM-0FE2W: (2) PA-1C-P
- NM-2FE2W: (2) PA-1C-P
(there's also a NM-1E2W with (2) WIC-1DSU-T1's in the unit)
I can bundle the (2) ATM lines from the NM-0FE2W and (1) from the NM-2FE2W
just fine, but when I add the second line from the NM-2FE2W, performance
is terrible.
A "debug multilink events" shows that upon adding the fourth line, the
following starts happening:
*Jun 24 18:30:43.944 edt: Mu1 MLP: Begin bit lost, discard fragment
15F75B
*Jun 24 18:30:43.944 edt: Mu1 MLP: Begin bit lost, discard fragment
15F75C
*Jun 24 18:30:43.944 edt: Mu1 MLP: Begin bit lost, discard fragment
15F75D
*Jun 24 18:30:43.976 edt: Mu1 MLP: Received lost fragment seq 15F756,
expecting 15F7FE
*Jun 24 18:30:43.980 edt: Mu1 MLP: Received lost fragment seq 15F75A,
expecting 15F7FE
*Jun 24 18:30:43.980 edt: Mu1 MLP: Received lost fragment seq 15F75E,
expecting 15F7FE
*Jun 24 18:30:43.984 edt: Mu1 MLP: Lost fragment 15F7FE (all links out of
sequence)
Could I just have a bad line from Verizon? Or a bad card? Or have I hit
some hardware limit on the 3640?
Thanks
Adam
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