Re: Subnet routing

Evan Champion (evanc@synapse.net)
Wed, 09 Jul 1997 16:39:40 -0400

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Brian Elfert wrote:
>
> I'm still running RIP (Yuck!) on my network. My PM is running ComOS 3.5.

You're going to be SOL unless you're routing everything on 206.11.209/24
through the Portmaster.

> A show netmask on my PM shows the following:
>
> pm3.citilink.com> show table netmask
> Active Netmasks:
> Network Netmask Type
> ---------------- ---------------- -------
> 206.11.209.128 255.255.255.240 Static
> Stored Netmasks:
> Network Netmask
> ---------------- ----------------
> 206.11.209.128 255.255.255.240

You don't need to store a netmask for this.

> My problem is, when the user connects, I can traceroute to 206.11.209.129,
> but not to any of the other IPs in the subnet. I'm trying the traceroute
> from 206.11.208.3.

My guess is that you haven't done 'set user-netmask on'. Please see the
ComOS 3.5 release notes at <http://www.livingston.com/> before you do
this.

> Is this problem because I'm running RIP, and so the Cisco isn't getting
> the routing info? Is there any way I can fix this without going to OSPF
> right now?

If you only want to route that /28 through the Portmaster, you're going
to need OSPF. If you don't mind routing the entire /24, then there's no
problem using RIP. Otherwise, OSPF isn't so bad; for a simple network,
it's not too much more effort than the equivalent RIP setup.

Evan
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