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To: mnewton <mnewton@newland.com>
cc: hackers <hackers@freebsd.org>, jhk <jkh@freebsd.org>
Subject: Re: Ascend max problem router hangs 
In-reply-to: Your message of "Sun, 09 Mar 1997 18:28:45 EST."
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Date: Sun, 09 Mar 1997 16:07:26 -0800
From: Amancio Hasty <hasty@rah.star-gate.com>
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A lot depends on the kind of traffic that is going thru the Ascend router.
For instance a steady stream of UDP packets can bring down nicely Ascend
routers. This problem was easily reproduced with mbone apps with mrouted
running on FreeBSD boxes. The latest version for at least my
Ascend Pipeline 50 seems to alleviate the problem yet it is still 
there. Very fast tcp/ip traffic can also cause the routers to die but
much harder to reproduce than with UDP traffic.

It seems like Ascend has buffer management problems or so I was able
to ascertain from past talks with Ascend.

	Good Luck,
	Amancio



>From The Desk Of mnewton :
> It looks like there is a problem with Ascend routers that they 
> stop transmitting data at certain points in time. As a fix (as noted in 
> some other user-group email) id to ping every 30 secs across the router 
> to the connected pc's. This is a workaround 
> but files can now be transmitted 100 % 
> I have sent info to ascend but apparnetly others have too.
> Ascend haven't been able to find the problem.
> (
> Any one with TCP background looking for a job mail resume
> to support@ascend.com)
>