Re: (PM) Network OSPF questions

Scott Carpenter (scarpenter@assuredaccess.com)
Wed, 21 Jan 1998 09:54:39 -0800

At 07:41 AM 1/21/98 -0800, James Laszko wrote:
>I'm pretty new to the OSPF routing protocol, and am wondering if I've got
>my setup correct. Everything seems OK, execept users with static IP
>numbers get routes that are external E2 assigned to them by my
PortMasters. A
>little network background:
>
>We have 2 class C addresses, 204.212.132.0 and 204.216.131.0.
>204.212.132.0 is subnetted /27 all the way across, with subnet 0 being
>assigned to the
>routers, terminal servers, and hosts that are on our "public" network
>segment. The PM2's we have use subnets from within that space to allocate
>IP pools
>for dynamic dialin users. We have a number of dedicated / special people
who
>dial-in to the PM2's and they have static IP numbers assigned out of a
>variably subnetted 204.216.131.0 network. We use the 204.216.131.0
>network for PTP interface IP's, virtual interfaces on hosts for WWW, etc.
>
>When a user logs in and has a dynamic IP address, the PM2's seem to
>broadcast routes for them just fine (they show up as O's in my Cisco's
routing
>tables).

The above works Thanks to the very talented Software Engineer that wrote
the code to do this. there is no rfc standard on how to propagate dial
pools. So it it is up to the individual company(Software Engineer) on how
they want the address pool propagated

When a user logs in and has a static IP address, the PM2's
>broadcast an
>external type E2 route for that static IP address - is this correct?

the external type 2 route is correct for dial in users per rfc standard.
FYI.
This means you can not place these access servers in a stub area and expect
it to dynamically propagate these routes, however you can place them in a
Not-So-Stubby-Area

>
>I've included some more information on my network below. If you've got a
>handle on OSPF, I'd appreciate your comments.
>
>
>
>------------------------
>NETWORK MAP
>
>
> ^ To Internet
> |
> | Ser 0
> |
>--------------------------
>| RTR-A (CISCO) |
>--------------------------
> | Eth 1 (204.212.132.1)
> |
>-[ethernet]-----------------------------------------------------------------
>-------------------
> | | |
> 204.212.132.5 | 204.212.132.6 | 204.212.132.6 |
> | | |
> ----------------------- ----------------------- ---------------------
> | RTR-B (PM2) | | RTR-C (PM2) | | HOST-A |
> ----------------------- ----------------------- ---------------------
> | | | | | | | | | | | |
> | | | | | | | | | | | |
> | | | | | | | | | | | |
>
> DIALUPS DIALUPS
> Dynamic / Static Dynamic / Static
>
>
>------------------------
>IP ADDRESS SPACE
>
>204.212.132.0/27 "Core" network
>204.212.132.32/27 Pool space for RTR-B (PM2)
>204.212.132.64/27 Pool space for RTR-C (PM2)
>
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