I cant see a problem here, but I have been caught on this one before when
using MD5 authentication.
Remember when using MD5 authentication in Area 0 the R2 will have a direct
connection into Area 0 after the virtual link has been made
so needs to have MD5 authentication as well. You can also do MD5
authentication on the virtual link itself, this was what I was trying to do
and got confused with the MD5 authentication between R2 and Area 0.
When I removed all the MD5 authentication it still would come up. In the end
I removed the config and started again, bingo it came up


----- Original Message ----- 
From: "Kevin Love" 
To: 
Sent: Wednesday, May 28, 2003 5:37 AM
Subject: Virtual Link Problem [7:69640]


> Hey Team,
>
> I cannot figure this out.  I've configured lots of virtual links, but no
> matter what I do this isn't working.  I had md5 authentication configured
> for Area 0, but to isolate the problem, I removed authentication and the
> virtual link still isn't up.  I need another set of eyes (or two) looking
at
> this.  Please help if you can!
>
> Here's the topology:
>
> Area 2 (Loopback 0)
>  |
>  R2
>    \
>     \
>      FR
>    Area 1
>  /        \
> R5        R6
>  \        /
>    Area 0
>   Ethernet
>
> Here are the salient config snippets:
>
> R2
> !
> interface Loopback0
>  ip address 192.168.2.2 255.255.255.255
>  ip ospf network point-to-point
> !
> interface Serial1.256 multipoint
>  ip address 172.16.56.2 255.255.255.248
>  ip ospf priority 255
>  frame-relay map ip 172.16.56.2 105
>  frame-relay map ip 172.16.56.5 105 broadcast
>  frame-relay map ip 172.16.56.6 106 broadcast
>  no frame-relay inverse-arp
> !
> router ospf 1
>  log-adjacency-changes
>  area 1 virtual-link 192.168.5.5
>  area 1 virtual-link 192.168.6.6
>  network 172.16.56.0 0.0.0.7 area 1
>  network 192.168.2.2 0.0.0.0 area 2
> !
>
> R5
>
> interface Ethernet0
>  ip address 172.16.200.5 255.255.255.128
>  ip ospf hello-interval 15
> !
> interface Serial0
>  ip address 172.16.56.5 255.255.255.248
>  encapsulation frame-relay
>  ip ospf network point-to-multipoint
>  frame-relay map ip 172.16.56.2 501 broadcast
>  frame-relay map ip 172.16.56.5 501
>  frame-relay map ip 172.16.56.6 501 broadcast
>  no frame-relay inverse-arp
>  frame-relay lmi-type cisco
> !
> router ospf 1
>  log-adjacency-changes
>  area 1 virtual-link 192.168.2.2
>  network 172.16.56.0 0.0.0.7 area 1
>  network 172.16.200.0 0.0.0.127 area 0
>  network 192.168.5.5 0.0.0.0 area 5
> !
>
> R6
>
> interface Serial0
>  ip address 172.16.56.6 255.255.255.248
>  encapsulation frame-relay
>  ip ospf network point-to-multipoint
>  frame-relay map ip 172.16.56.2 601 broadcast
>  frame-relay map ip 172.16.56.5 601 broadcast
>  frame-relay map ip 172.16.56.6 601
>  no frame-relay inverse-arp
>  frame-relay lmi-type cisco
> !
> interface FastEthernet0
>  ip address 172.16.200.6 255.255.255.128
>  ip ospf hello-interval 15
>  half-duplex
> !
> router ospf 1
>  log-adjacency-changes
>  area 1 virtual-link 192.168.2.2
>  network 172.16.56.0 0.0.0.7 area 1
>  network 172.16.200.0 0.0.0.127 area 0
>  network 192.168.6.6 0.0.0.0 area 6
> !
>
> R2#sh ip ospf vir
> Virtual Link OSPF_VL5 to router 192.168.5.5 is down
>   Run as demand circuit
>   DoNotAge LSA allowed.
>   Transit area 1, Cost of using 65535
>   Transmit Delay is 1 sec, State DOWN,
>   Timer intervals configured, Hello 10,      40, Wait 40, Retransmit 5
> Virtual Link OSPF_VL4 to router 192.168.6.6 is down
>   Run as demand circuit
>   DoNotAge LSA allowed.
>   Transit area 1, Cost of using 65535
>   Transmit Delay is 1 sec, State DOWN,
>   Timer intervals configured, Hello 10,      40, Wait 40, Retransmit 5
> R2#
>
> Trust me on the router-IDs for the virtual link statements - I have
> triple-checked them.  I have reloaded the routers with no luck.  What am I
> missing here?!
>
> Thanks!
> Kevin




Message Posted at:
http://www.groupstudy.com/form/read.php?f=7&i=69653&t=69640
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