Re: (ASCEND) OSPF route summarization

["Mike Hughes" <mike@dircon.net>]

On 15 Jun 98 at 11:46, Todd Romero wrote:

> On Max4048's..is there a way to make the dynamically assigned
> addresses get summarized into a /26 for example instead of injecting
> a ton of /32's into the ospf database? I know this can easily be
> done on Livingston portmasters. 

Yep, pretty easy on the Max too...

For example, take a class C address (such as 192.168.1.0/24), use 
pool starting points of something like

192.168.1.1
192.168.1.65
192.168.1.129
192.168.1.193

and a count of 62.

Switch pool summary on, and voila, you have

192.168.1.0/26
192.168.1.64/26
192.168.1.128/26
192.168.1.192/26

appearing in the routing table on your core routers.

You basically have to use pool counts with "powers of 2, less 2" 
(i.e. 30, 62, 126) for it to summarise OK.

Works quite nicely, using RIP-2 here, and my Cisco likes it :-).

Mike
-- 
Mike Hughes - Network Services         mike@dircon.net
Tel: 0181 297 0300                     http://www.dircon.net/
Fax: 0181 463 9820
++ Ascend Users Mailing List ++
To unsubscribe:	send unsubscribe to ascend-users-request@bungi.com
To get FAQ'd:	<http://www.nealis.net/ascend/faq>

---

References:

• (ASCEND) OSPF route summarization
• From: Todd Romero <toddr@monumental.com>

---

• Prev by Date: Re: (ASCEND) Re: NO Dialout with Max4000
• Next by Date: Re: (ASCEND) MAX4000 not getting full load
• Prev by thread: RE: (ASCEND) OSPF route summarization
• Next by thread: (ASCEND) Question On Services
• Index(es):
  • Main
  • Thread