From: Jason Gardiner (gardiner@xxxxxxxxxx)
Date: Tue Jun 12 2001 - 23:16:09 GMT-3
All,
Several books from which I study explain RIP and IGRP FLSMs in a manner
similar to this quote:
"When subnetting is performed in a RIP or IGRP environment, all subnet
masks for a given classful address must be the same. They are "fixed
length subnet mask" (FLSM) environments. Also, for RIP and IGRP, all
subnets of a given classful network must be the same."
To me, this sounds like you can break up a network like 10.0.0.0 into /24s
and have them announced across a RIP or IGRP network. Each subnet has the
same mask.
I've tried it and run a debug. The only block announced is a /8, but the
routing table shows
10.0.0.0/24 is subnetted, 2 subnets
10.0.0.0 is directly connected, Loopback 0
10.0.1.0 is directly connected, Loopback 1
It appears that the protocol still announces based on the 3 bit classful
boundary and ignores the subnet information.
Am I missing something, or is the information in the quote wrong?
Thanks,
Jason Gardiner
Engineering Services
Sprint E|Solutions
"The only thing to prevent what's past is to put a stop to it before it happens
."
- Sir Boyle Roche
**Please read:http://www.groupstudy.com/list/posting.html
This archive was generated by hypermail 2.1.4 : Thu Jun 13 2002 - 10:31:23 GMT-3