[4158] in linux-net channel archive
Re: linux router/fw problems (icmp, arp, rip)
daemon@ATHENA.MIT.EDU (Stewart Allen)
Fri Aug 23 01:49:32 1996
Date: Fri, 23 Aug 1996 00:46:00 -0400 (EDT)
From: Stewart Allen <stewart@neuron.com>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
cc: linux-net@vger.rutgers.edu
In-Reply-To: <Pine.LNX.3.94.960822215835.9354A-100000@flex.neuron.com>
On Thu, 22 Aug 1996, Stewart Allen wrote:
> I have the dumps at work, but from memory, the only difference was that
> the ICMP redirect from the Linux router contained a TOS field and the one
> from the Cisco did not. The result was that the remote end actually sent
> a RST packet and reset the connection. This doesn't happen the second
> time (with the Linux router) and the connection succeeds. After some
> timeout period that I haven't figured out yet, another telnet or attempted
> connection will fail; the subsequent attempt will again succeed.
BTW, and you probably knew this, the reason the second connection
succeeds is because the ICMP redirect causes the next connect to
go directly to the intended host (not via the Linux router and not
getting another ICMP redirect). After a period of time, the route
created by ICMP is flushed and the next connect will fail.
Also, the TOS was set to 6. I'm not familiar with service levels,
but I got the impression that they're not widely supported. Is this
true?
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| Stewart Allen ftp.neuron.com
stewart@mail.neuron.com http://www.neuron.com
617.492.2089 FAX 617.492.5837 Neuron Information Systems |
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