RE: [load balancing] Alteon 180e session drops

From: Vincent Bouydron <Vincent.BOUYDRON [izzat] telindus-arche.fr>
Date: Mon Apr 03 2006 - 08:29:50 EDT

Hello Tariq,

how is the "Allocation failures" counter in /stat/slb/maint ?

/Vincent

> -----Original Message-----
> From: owner-lb-l@vegan.net [mailto:owner-lb-l@vegan.net]On Behalf Of
> Tariq Kadri
> Sent: samedi 1 avril 2006 12:39
> To: lb-l@vegan.net
> Subject: [load balancing] Alteon 180e session drops
>
>
> Hi All,
>
> We've been experiencing issues with an Alteon 180e for some
> time now. It's
> scarily similar to the initial post by Tino in this thread:
> http://vegan.net/lb/archive/11-2002/0137.html
>
> After a month of being active the Alteon starts rejecting
> sessions and
> certain people out on the internet complain that they are
> getting timeout
> messages. After the Alteon is reset the problem disappears, but then
> resurfaces after some time. We are now suffering on a weekly
> basis and need
> help to resolve.
>
> We are running the latest software version:
>
> Hardware Revision: A
> Hardware Part No: E09_5B-B_7B-A
> Software Version 10.0.33.4-SSH (FLASH image2), active configuration.
>
> Also the layer 7 maint:
>
> Layer 7 maintenance stats:
> Clients reset by switch on client side: 122
> Clients reset by switch on server side: 599
> Connection Splicing to support HTTP/1.1: 16687
> Aged delayed binding sessions: 76911
> Half open connections: 418005
> Switch retries: 1203
> Random early drops: 1083216
> Requests exceeded 18200 bytes: 0
> Invalid 3-way handshakes: 657970
> Current SP memory units: 429
> Current SEQ buffer entries: 526 Highest: 1136
> Current Data buffer use: 526 Highest: 1164
> Current SP buffer entries: 0 Highest: 180
> Alloc Fails - Seq buffers: 25 Alloc Fails - Ubufs: 18
> Max sessions per bucket: 2 Max frames per session: 11
> Max bytes buffered (sess): 5968
>
> Can you see anything strange with the above? For me the
> Random Early drops,
> the Half open connections and the Invalid 3-way handshakes
> are very high.
>
> Any input is greatly appreciated.
>
> Regards, T.
>
>
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Received on Mon Apr 3 08:29:55 2006

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