From: Brian Dennis (bdennis@internetworkexpert.com)
Date: Fri Nov 28 2003 - 19:38:26 GMT-3
Basically just don't run point-to-multipoint ;-)
The behavior of point-to-multipoint is to advertise each end-point out as a
/32 and suppress the advertisement of the network itself.
Point-to-multipoint does this to overcome possible reachability issues
between devices that are on the same logical subnet but do not have direct
communication (i.e. spoke to spoke communication). OSPF point-to-multipoint
and technically loopback network types do not advertise the network itself.
This is as per the RFC.
If you want to suppress the /32s and advertise only the network, you would
need to use an OSPF network type other than point-to-multipoint or configure
the network to be in its own OSPF area. After the network is put in its own
OSPF area, use the area range command to summarize the /32s so other routers
only see the summarized route.
Brian Dennis, CCIE #2210 (R&S/ISP-Dial/Security)
bdennis@internetworkexpert.com
Toll Free: 877-224-8987
Direct: 775-745-6404 (Outside the US and Canada)
Internetwork Expert, Inc.
http://www.InternetworkExpert.com
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
navaid@rogers.com
Sent: Friday, November 28, 2003 2:13 PM
To: ccielab@groupstudy.com
Subject: ospf network point-to-multipoint
I have ospf network point-to-multipoint configured between R1,R2 and R3.
R2 is frame relay Hub and R1,R3 spoke.
In my routing table I am seeing host routes (/32) for frame interface of
R1,R2 and R3 but NO router for subnet. How do I suppress host and see only
one route for subnet which is /24.
Thanks,
Navaid
This archive was generated by hypermail 2.1.4 : Fri Dec 12 2003 - 12:29:19 GMT-3