Re: Routes appearing on OSR505 box
From: Mike Brown (mike_at_tkg.ca)
Date: 07/01/03
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Date: Tue, 01 Jul 2003 14:59:53 GMT
"Stuart J. Browne" wrote:
>
> Hi,
>
> I've got an OSR 5.0.5 machine on the network at a clients, and routes (as
> shown below) are appearing.
>
> The gateway is a Cisco router, and has had 'no ip redirects' inserted into
> the ethernet interface. At a guess, I'd say these were RIP or another
> routing protocol's handy work (no 'D', thus not redirects), but I don't
> have 'routed' or 'gated' running on the server.
>
> What else would cause routes to show up in this manner ?
>
> default 192.168.1.254 UGS 99 1148621 net0
> 127.0.0.1 127.0.0.1 UH 3 196687 lo0
> 192.168.1 192.168.1.111 UC 1 0 net0
> 192.168.1.111 127.0.0.1 UGHS 4 35 lo0
> 192.168.2.101 192.168.1.254 UGH 1 115 net0
> 192.168.2.102 192.168.1.254 UGH 1 22 net0
> 192.168.4.4 192.168.1.254 UGH 2 796 net0
> 192.168.4.101 192.168.1.254 UGH 1 12 net0
> 192.168.4.102 192.168.1.254 UGH 1 49 net0
> 192.168.5.96 192.168.1.254 UGH 4 334 net0
> 192.168.5.98 192.168.1.254 UGH 4 2874 net0
> 192.168.5.99 192.168.1.254 UGH 4 1377 net0
>
> SCO:Unix::5.0.5Eb rs505a.Unix505.1.0a oss497c.Unix505.1.0a
> oss600a.Unix505 OSS621A.505.SCO.Unix.RTS
>
> bkx
It would be worthwhile re-addressing this issue at a BOF for OSR5
if you are going to forum. It was brought up last year, and a few
people agreed that they have seen this issue. The problem seems to
happen more often in my customer base when
1) there is more than one cisco router involved
2) the network link from the server to the client is not perfect,
i.e. may be losing packets or have temporary "no route to destination"
I have had the unusual effect of tangling up the lpd print queues, even
though a telnet session was working through a VPN from a branch office
to the head office. Even with the default route being correct, routed
and gated off, no icmp redirects from the router, adding in a host route
to the printserver restarted the print queue.
I have mused if the problem may be started when a connection is working,
say from a branch office to the head office, yet for a moment the WAN
becomes dead. A "no route to host" packet comes in for the branch office
subnet, yet some connections are still working. Somewhere in the OSR5
network routing stack a host route is created for the working connection,
hence the strange route table.
Mike
-- Michael Brown The Kingsway Group
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