RE: (ASCEND) VJ Header compression

["Zanten, Marco van" <Marco.Zanten@Alcatel.nl>]

Martin,

No direct thoughts, the only thing that comes to mind is MTU/MRU
Not that I think it is related but, what else may influence the VJ
compression.

I have upgrade a couple TNT's with 7.2.0 and these boxes have had some 
ethernet card resets (the cards with 4 10BaseT and 1 100/10 Base T)
The revision is B or later this should be ok.??

Any thoughts ?

> -----Original Message-----
> From:	Martin Saunders [SMTP:martins@easynet.net]
> Sent:	dinsdag 20 juli 1999 15:59
> To:	ascend-users@bungi.com
> Subject:	(ASCEND) VJ Header compression
> 
> I seem to be getting some serious performace hits from a Max TNT with
> just
> HDLC-2 cards. The problem seems to be the VJ Header compression code
> under 7.2.0
> 
> With the TNT under quite heavy load (400 connections, all busy) with
> VJ
> enabled there are frequent pauses in data flow do to (what I believe)
> is some
> data corruption. Essentially the client machine stops 'acking'
> packets, which
> make the remote machine timeout, and eventually resend. With VJ turned
> off
> on either the Win98 client or the TNT, this corruption doesn't happen,
> so
> the clients 'acks' away happily, and a good transfer rate is achieved.
> 
> This seems to be a problem with most Terminal servers (I have tested a
> Nortel
> CVX 1800, Cisco 5300 and 3Com total control rack), but the pauses are
> only
> very occasional, while on the busy TNT they are every few seconds.
> Most
> annoying!
> 
> Any thoughts?
> 
> Martin
> -- 
> +-----------------
> Martin Saunders   Network Access Developer    Easynet Ltd. 
> 'Best European ISP' by ISPA 1999  http://about.easynet.net
> martins@easynet.net                 Tel:(+44) 171 681 4444
>                                         -----------------+
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