From: Victor Cappuccio (cvictor@protokolgroup.com)
Date: Mon Dec 19 2005 - 22:26:54 GMT-3
Jeje Sorry for the SPAM
Why not changing network 172.16.2.4 0.0.0.3 area 10 to
Network 172.16.2.4 0.0.0.3 area 0 .- please when doing that, also remove the
VL
Regards
Victor
BTW: VL == Virtual Link
-----Mensaje original-----
De: nobody@groupstudy.com [mailto:nobody@groupstudy.com] En nombre de Victor
Cappuccio
Enviado el: lunes, 19 de diciembre de 2005 21:13
Para: 'Paul Slater'; RIDNEY_M_LAUDIANO.TTSP@ts.tsuneishi.co.jp; 'John
Matus'; ccielab@groupstudy.com
Asunto: RE: OSPF loopback addresses shown as real subnet the 3 ways
Hello Paul..
Can you please send us show ip ospf interface, and a show ip ospf and a
little bit how you topology is..
Seems to me that Area 0 in that router is inactive-- Do you have neighbors
in the Area 0..
The router that is ABR (more that 1 Area) should have at least 1 int in A0..
if I'm not incorrect here a VL is considered a Logical Interface .. Like
some kind of GRE Tunnel, but for making routers ospf neighbours in Area 0
RFC 2328..
3.1. The backbone of the Autonomous System
..... The backbone must be contiguous. However, it need not be
physically contiguous; backbone connectivity can be established/maintained
through the configuration of virtual links.
3.2. Inter-area routing
When routing a packet between two non-backbone areas the
backbone is used .....
HTH
Victor
-----Mensaje original-----
De: nobody@groupstudy.com [mailto:nobody@groupstudy.com] En nombre de Paul
Slater
Enviado el: lunes, 19 de diciembre de 2005 19:08
Para: RIDNEY_M_LAUDIANO.TTSP@ts.tsuneishi.co.jp; John Matus;
ccielab@groupstudy.com
Asunto: RE: OSPF loopback addresses shown as real subnet the 3 ways
Hi,
I have been playing with this when I had a chance at the weekend just
gone.
The 3 ways as I can see are
1) opsf network point-to-point
2) Redistribution of connected or out of another protocol one.
3) Area range. The area range is not so simple the only way I got it to
work is by creating a new area and doing a virtual to area 0 see below
Area 0 router
router ospf 2002
area 10 virtual-link 172.16.3.3
network 128.10.1.0 0.0.0.255 area 0
network 172.16.1.0 0.0.0.255 area 0
network 172.16.2.4 0.0.0.3 area 10
172.16.0.0/16 is variably subnetted, 3 subnets, 2 masks
C 172.16.2.4/30 is directly connected, Serial0.2
C 172.16.1.0/24 is directly connected, Serial0.1
O IA 172.16.3.0/24 [110/65] via 172.16.2.6, 00:24:03, Serial0.2
ABR router
router ospf 2002
log-adjacency-changes
area 10 virtual-link 172.16.2.5
area 12 range 172.16.3.0 255.255.255.0
network 172.16.2.4 0.0.0.3 area 10
network 172.16.3.0 0.0.0.255 area 12
Loopback100 172.16.3.3
If someone has a better way of doing it then please let me know.
Regards Paul
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