From: wilson@wilsonch.gotdns.com
Date: Sat Feb 17 2007 - 23:09:10 ART
Thanks Ben! You just cured my 2 hour long headache! I guess this is a bug
in OSPF.
In the thread below they recommend to remove all virtual links and then
apply the neighbor statement and then rebuild your virtual links. I did
this and it worked like a champ.
However, on my quest to figuring out why this didn't work I cheated and
used the "ip ospf network broadcast" on the frame-relay interfaces. This
worked and allow me to see all my ospf neighbors, but did I shooting
myself in the foot by going this route?
================================
http://www.cisco.com/warp/public/104/3.html
Broadcast Interfaces
This approach is a workaround for using the "neighbor" command which
statically lists all existing neighbors. The interface will be logically
set to broadcast and will behave as if the router were connected to a LAN.
DR and BDR election will still be performed so special care should be
taken to assure either a full mesh topology or a static selection of the
DR based on the interface priority. The command that sets the interface to
broadcast is:
ip ospf network broadcast
Wilson
> Hi,
>
> Check out this thread:
> http://www.groupstudy.com/archives/ccielab/200702/msg00594.html
> HTH
> Ben
> wilson@wilsonch.gotdns.com wrote:
>> Im going through the IPEXPERT R&S WB8.0 lab 5 (OSPF).
>>
>> R2 wont take the ospf neighbors command for R4, R5, and R6. R4-6 is NBMA
>> so im suppose to use the "neighbor ip-address" command in ospf 1, but it
>> doesnt let me. Anyone know why? Thanks!
>>
>> interface Serial0/0
>> no ip address
>> encapsulation frame-relay
>> fair-queue
>> no frame-relay inverse-arp
>> no frame-relay broadcast-queue
>> !
>> interface Serial0/0.25 multipoint
>> ip address 150.50.25.2 255.255.255.0
>> ip ospf priority 100
>> frame-relay map ip 150.50.25.5 205 broadcast
>> frame-relay map ip 150.50.25.2 205
>> no frame-relay inverse-arp
>> !
>> interface Serial0/0.246 multipoint
>> ip address 150.50.246.2 255.255.255.0
>> ip ospf priority 100
>> frame-relay map ip 150.50.246.4 204 broadcast
>> frame-relay map ip 150.50.246.6 206 broadcast
>> frame-relay map ip 150.50.246.2 204
>> no frame-relay inverse-arp
>> !
>> interface Serial0/1
>> description *** WIC#1- Serail Link to R5 ***
>> ip address 150.50.9.2 255.255.255.192
>> clock rate 64000
>> !
>> interface Ethernet1/0
>> description *** SW#1 Port 2 ***
>> ip address 150.50.12.2 255.255.255.0
>> half-duplex
>> !
>> router ospf 1
>> router-id 2.2.2.2
>> log-adjacency-changes
>> area 25 virtual-link 5.5.5.5
>> area 246 virtual-link 6.6.6.6
>> network 2.2.2.2 0.0.0.0 area 0
>> network 20.2.2.2 0.0.0.0 area 246
>> network 21.2.2.2 0.0.0.0 area 25
>> network 150.50.12.2 0.0.0.0 area 0
>> network 150.50.25.2 0.0.0.0 area 25
>> network 150.50.246.2 0.0.0.0 area 246
>>
>>
>> R2(config)#router ospf 1
>> R2(config-router)#neighbor 150.50.25.5
>> OSPF: Neighbor command is allowed only on NBMA and point-to-multipoint
>> networks
>> R2(config-router)#neighbor 150.50.246.4
>> OSPF: Neighbor command is allowed only on NBMA and point-to-multipoint
>> networks
>> R2(config-router)#neighbor 150.50.246.6
>> OSPF: Neighbor command is allowed only on NBMA and point-to-multipoint
>> networks
>>
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