From: Snow, Tim (timothy.snow@eds.com)
Date: Tue Sep 02 2003 - 02:31:04 GMT-3
Your comment about "it will not pass routes that do not match the subnet
mark of the outgoing interface" is partially correct. Assuming those routes
it's going to say fall into the same major net then that rule applies.
As far as the /32 goes, you might want to take a look at "host routes" in
the RIP RFC. Should shed some light as to those.
Tim
-----Original Message-----
From: Danny.Andaluz@triaton-na.com [mailto:Danny.Andaluz@triaton-na.com]
Sent: Tuesday, September 02, 2003 1:23 AM
To: ccielab@groupstudy.com
Subject: RIP classful or not
Hello, Group.
I found something interesting (and troubling for me)with regards to RIP. My
understanding of RIP v1 is that it will not pass routes that do not match
the subnet mask of the outgoing interface. I thought this was true for both
RIP routes and routes redustributed into RIP. I saw a scenario where a /32
route was being sent out of a /24 interface and appearing in the routing
table of the router on the other end. This /32 route was being
redistributed into RIP from OSPF. My question is does the rule of routes
having to match the mask on the outgoing interface not apply to routes
redistributed into RIP?
The scenario used a prefix-list to stop /32 routes from being Redistributed
from OSPF into the RIP domain.
ip prefix-list 1 seq 10 permit 172.31.0.0/16 le 31
Without this line, the RIP domain would see these /32 routes.
Is this normal?? I'm 2 days away, fellas. I gotta clear this up soon.
Thanks,
Danny
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