From: Walter Chen (wchen@xxxxxxxxx)
Date: Fri May 18 2001 - 10:08:35 GMT-3
The virtual link itself belongs to area 0. So when you configure
authentication for area 0 you also need to authenticate the virtual link by
"area 5 vir router_id message ...". Of course on R2, you also need to enter
the router command "area 0 authen message".
-----Original Message-----
From: Wei Man [mailto:mandraw1@yahoo.com]
Sent: Friday, May 18, 2001 8:22 AM
To: ccielab@groupstudy.com
Subject: OSPF Virtual-Link and authentication
Hi,
In this scenario, I am having trouble to get
complete routes in R1, any idea how to solve this ?
R1<------>R2<------>R3<------->R4
R1 has loopback address that runs OSPF area 55
R1 connect with R2 using OSPF area 55
R2 connect with R3 using OSPF area 5
R3 connect with R4 using OSPF area 0 with md5 auth
R4 has loopback address that runs OSPF area 0 with
md5 auth
In this scenario, I know I have to use virtual link
in R3,
R3#
router ospf 10
area 5 virtual-link (OSPF-ID R2)
R2#
area 5 virtual-link (OSPF-ID R3)
area 0 authentication message-diggest
But the problem in here, only area 0 that runs
authentication using md5, others area not using
md5 authentication.
When I using that configuration, I only get partial
routes (from backbone) in R1, However if I put
area 55 using authentication md5 and change
configuration in R3 to
R3#
area 5 virtual-link (OSPF-ID R2)
area 55 authentication message-digest
in R1, I will get complete routes (from backbone)
so my question is , how can you configure OSPF
if and only if area 0 that have authentication md5
and get complete routes in R1 using virtual link ?
Thanks in advance
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