Problems with sr driver and Wanic 400

[Ted Mittelstaedt]

What I found works is freebsd 4.x, and a Pentium 2 350-400Mhz
this was using risecom n/2 cards.

FreeBSD 6.1 doesen't work at any speed in this combo, it loses
packets.

It's a driver bug, the sr driver needs a rethink of it's buffer
structures.

also, there's a bug with the wanic 2 port cards that isn't present
in the risecom/n2 2 port cards, they drop characters when both ports
are active.

With Cisco 1601's selling on the used market for $25 or so, there's
little interest among the developers in fixing this.  Also the wanic 4xx
is no longer in production, another disincentive.

It would be interesting benchmarking this with Imagestream's
Linux-only drivers.

Ted

----- Original Message ----- 
From: "John Levine" <johnl at iecc.com>
To: <freebsd-questions at freebsd.org>
Sent: Sunday, November 12, 2006 6:37 AM
Subject: Problems with sr driver and Wanic 400


> I'm trying to put together a freebsd 6.1 T1 router with an old PC and
> a Wanic 400 card I bought on ebay.  I'm using the sr driver netgraph,
> mpd, and pf with altq, since I want to do priority routing for some
> voip phones.
>
> It all works fine until the t1 gets busy, e.g., if I do a wget on
> the router, and which point it starts complaining about TX overruns
> and the traffic on the wanic stops.  Any suggestions?
>
> The PC is pretty slow, and one thought is that I also have an old
> SDL RISCom/N2 ISA card which is slower than the wanic.  Is that
> likely to work more reliably?  Speed isn't much of an issue on a
> single t1 and yes, the PC is old enough that it has ISA slots.
>
> R's,
> John
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