From: James Yeo (James.Yeo@arivia.co.za)
Date: Wed Jun 22 2005 - 02:21:36 GMT-3
Mark
All depends on the mask of the original IP address of your interface. If
it is a /24 then 0.0.0.255 area x or /32 0.0.0.0 area x. Assuming you
have to advertise the /32 Ip address as a /24 then you resort to other
methods e.g. redistribute connected subnets route-map ospf-loop0
!
Route-map ospf-loop0 permit 10
Match interface loopback 0
Thanks
James
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
yesar1@yahoo.com
Sent: Wednesday, June 22, 2005 7:08 AM
To: ccielab@groupstudy.com
Subject: [Norton AntiSpam] /32 vs /24 for loopback and OSPF
Greetings,
When asked to configure loopback interface as part of OSPF area, when
should I be
-using /32 mask for the IP address and subsequently 0.0.0.0 in the ospf
network statement
(e.g.
int lo0
ip add 1.1.1.1 255.255.255.255
router ospf 0
network 1.1.1.1 0.0.0.0 area 0.0.0.0)
vs
-using /24 mask and 0.0.0.255 in the ospf network statement
(e.g.
int lo0
ip add 1.1.1.1 255.255.255.0
ip ospf network point-to-point
router ospf 0
network 1.1.1.1 0.0.0.255 area 0.0.0.0)
Thanks in advance for your help,
Mark
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