Re: (PM) IRX/PM Routing, 2 Class Cs

Thomas C Kinnen (tkinnen@creativeanime.com)
Tue, 23 Jun 1998 21:01:05 -0400

>> >We have an IRX(ver3.7R) at 208.130.151.1, and PM2s(ver3.7) at
>> >208.130.151.2, 208.130.151.3. However, we have another class C -
>> >208.128.115.0 and would like to assign addresses from this class C to
the
>> >PMs.
>Sure why not... crude picture follows:
>
>
> INTERNET PM2---/ S0
> | | \ S1
> IRX-------- LOCAL ETHERNET -------| \ S2, etc.
> |
> PM2-- etc..
>

Two ways I can see this happening (I set our up with RIP 2 1/2 years ago and
have not touched it so I may be a bit rusty).

First:
1) Enable ether0 on the IRX (208.130.151.1) for Listen
2) Enable broadcast/Listen on both PM2s (208.130.151.2 and .3)
3) set up your pools on the Pm2s.

Whan a call comes in on the PM2 at 208.130.151.2 and it is assigned address
(lets say) 208.128.115.2 the pm should send out a rip update of:

208.128.115.2/32 208.130.151.2 1

And all should be happy. Now it may take up to 1 min for this route to make
it to all routers involved and the user be able to get anywhere.

Second way (Someone PLEASE check my subneting):

1) Subnet the 208.128.115.0 network into subnets of say /27
(255.255.255.240) which should be 30 usable IPs per subnet.
2) Set the 208.128.115.0/27 net to the first pm2 (208.130.151.2) (address
208.128.115.1-.30) and 208.128.115.32/27 to the second PM2 (208.130.151.3)
(address 208.128.115.33-.62)
3) Add the following routes to the PMs and IRX:

208.128.115.0/27 208.130.151.2 1
208.128.115.32/27 208.130.151.3 1

Tom

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