From: Andrew Larkins (andrew.larkins@BTGroup.co.za)
Date: Wed Jan 31 2007 - 04:55:25 ART
Exactly - but if you specify the OSPF network type on the interface the
mask will be sent - else put the loopback interface into a new area and
use an area range command
-----Original Message-----
From: getmo1 [mailto:getmo1@126.com]
Sent: 31 January 2007 09:12
To: Andrew Larkins; 'steve'; 'Edouard Zorrilla'; ccielab@groupstudy.com
Cc: security@groupstudy.com
Subject: RE: OSPF configuration explanation Lookpback 0
No matter what mask you provided for loopback, it will consider it is a
/32 network address.
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Andrew Larkins
Sent: Wednesday, January 31, 2007 2:39 PM
To: steve; Edouard Zorrilla; ccielab@groupstudy.com
Cc: security@groupstudy.com
Subject: RE: OSPF configuration explanation Lookpback 0
Hi,
Late in on this one, but the point to point network types advertises the
actual mask as I understand it and not the default /32
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
steve
Sent: 30 January 2007 15:56
To: 'Edouard Zorrilla'; ccielab@groupstudy.com
Cc: security@groupstudy.com
Subject: RE: OSPF configuration explanation Lookpback 0
My understanding is that:
Check the ospf database, for loopback, OSPF treat it as a stub network,
and so the network mask is 255.255.255.255.
If i can the network type to point-to-point, ospf will treat it as a
transit network, then the network mask sets according to the interface's
network mask.
Regards
Steve
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Edouard Zorrilla
Sent: 2007Dj1TB30HU 20:53
To: ccielab@groupstudy.com
Cc: security@groupstudy.com
Subject: OSPF configuration explanation Lookpback 0
Hello Group,
Is there any explanation why when I set the interface loopback 0 as a
"ip ospf network point-to-point":
Rack1R2(config)#int lo0
Rack1R2(config-if)#ip ospf network point-to-point
It is being learned as a /24 instead a /32:
150.1.0.0/24 is subnetted, 2 subnets
O 150.1.2.0 [110/65] via 163.1.12.2, 00:00:05, Serial0/3/0
Rack1R1#
I mean which caracteristic of the point-to-point network make it is
being shown as a /24 ?
Regards
This archive was generated by hypermail 2.1.4 : Thu Feb 08 2007 - 23:46:58 ART