Dont really have time at the moment to look into this, but something that you may want to investigate is the different LSA adverts sent out by different interface types in OSPF. Depending on the type of interface OSPF behaves different;y, ie different HELO timers, differnet DEAD timers etc. You need to ensure that all neighbors within the area are using the same type. You can change this using the interface command ip ospf network
Full details of of various interface types and how they affect OSPF can be found on http://www.chuckslongroad.info/OSPF_Frame_Reference.htm Kevin Love wrote: > > 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=69663&t=69640 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
