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Date:      Sun, 25 Oct 1998 14:11:30 -0500 (EST)
From:      <ratbert@phoenix.aye.net>
To:        Leif Neland <root@swimsuit.internet.dk>
Cc:        freebsd-isp@FreeBSD.ORG
Subject:   Re: route changes erratically (routed)
Message-ID:  <Pine.BSF.3.96.981025135922.28835A-100000@phoenix.aye.net>
In-Reply-To: <Pine.BSF.4.05.9810230024380.1409-100000@gina.swimsuit.internet.dk>

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We've had some similar problems with our portmasters, OSPF and rip2  both
seemed to be broken on them. We assigned an x.x.x.x/28 for the dialup
lines and the portmasters ended up broadcasting themselves as a route
to a x.x.x.x/28 and /29s, /30s, /31s and /32s within the /28. 
Pretty much turned the routing tables of everything on our network to
complete garbage.

What we did to solve it was add a static route on our servers and other
routers with the portmaster as a gateway to the dialup subnet assigned
to it. Have the static dialup ip addresses be on the same network with
the portmasters and servers and let the portmasters proxyarp for those
ip addresses.

On Fri, 23 Oct 1998, Leif Neland wrote:

> We have 2 portmasters (PM2), several servers, a cisco to the world, and a
> firewall to the internal network.
> 
> The cisco is default gateway
> 
> The servers and portmasters are on one class C, the dialins are on another
> class C.
> 
> Because some users have fixed ip, but can dial in on either of the
> portmasters, I run routed on all servers, and the portmasters seem to
> announce on which portmaster the customer is, so the route gets changed to
> the right portmaster.
> 
> The traceroute should then go from server to pm1 or pm2 to customer.
> 
> However, often the route changes so it goes
> server->cisco->pm->client or
> server->firewall->pm->client or even
> server->cisco->(router at our uplink)->cisco->(router at our uplink) etc.
> 
> If I constantly pings the client, I gets pauses where the pings are lost.
> 
> What do I do wrong? Shouldn't I use routed on the servers, but only route
> default gateway to the cisco, and let it handle the pm1/pm2 route changes?
> Or should I have one server running routed? or gated? or what?
> 
> Help!!!
> 
> 
> 
> 
> 
> 
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