Translating Cisco OSPF to a 6900

[willmeister]

Replacing a Cisco 3750 Core with a 6900. Everything else remains the same.

OSPF is running on the 6900 but one route is not advertised so I'm now back to a basic config detailed below.

On the old Cisco 3750:

original OSPF config:
router ospf 100
router-id 172.19.161.254
log-adjacency-changes
redistribute connected subnets
network 172.19.161.0 0.0.0.255 area 0.0.0.0
network 172.19.191.252 0.0.0.3 area 0 (Note: this is the problem network)

Core#sh ip int brie
Interface IP-Address OK? Method Status Protocol
Vlan1 unassigned YES NVRAM up up
Vlan502 172.19.161.254 YES NVRAM up up
Vlan503 172.19.162.254 YES NVRAM up up
Vlan505 172.19.163.254 YES NVRAM up up
Vlan507 172.19.191.254 YES manual up up
Vlan511 172.19.187.254 YES NVRAM up up
Vlan512 172.19.188.254 YES NVRAM up up
Vlan513 unassigned YES NVRAM up up
Vlan514 172.19.175.254 YES manual up up
Vlan515 unassigned YES NVRAM up up
Vlan516 unassigned YES manual up up

Relevant VLANS:
interface Vlan502
description Data
ip address 172.19.161.254 255.255.255.0
ip helper-address 172.19.161.31
no ip redirects
!
interface Vlan507
description CLIFTON
ip address 172.19.191.254 255.255.255.252
no ip redirects

What I have right now on the 6900 is:
ip load ospf
ip ospf area 0.0.0.0
ip ospf interface "Data"
ip ospf interface "Data" area 0.0.0.0
ip ospf interface "Data" admin-state enable
ip ospf admin-state enable
!
ip interface "Data" address 172.19.161.254 mask 255.255.255.0 vlan 502
ip interface "Clifton" address 172.19.191.254 mask 255.255.255.252 vlan 507
!
ip router router-id 172.19.161.254
ip static-route 0.0.0.0/0 gateway 172.19.161.253 metric 1
ip route-pref static 100
ip route-pref ospf 75
ip route-map "Local2OSPF" sequence-number 10 action permit
ip redist local into ospf route-map "Local2OSPF" admin-state enable

On the far Cisco router:

router ospf 100
router-id 172.19.156.1
no capability lls
redistribute connected
passive-interface FastEthernet4
passive-interface Vlan1
network 172.19.156.0 0.0.0.255 area 0
network 172.19.191.252 0.0.0.3 area 0
!
Interface vlan20
ip address 172.19.191.253 255.255.255.252
ip flow ingress
ip nat inside
ip virtual-reassembly in
!
Interface Vlan1
ip address 172.19.156.1 255.255.255.0
ip flow ingress
ip nat inside
ip virtual-reassembly in
ip tcp adjust-mss 1452
!
interface FastEthernet4
ip address dhcp
ip access-group FIREWALL in
ip flow ingress
ip flow egress
ip nat outside
ip inspect OUTBOUND out
ip virtual-reassembly in
duplex auto
speed auto
!
CLIFTON# show ip int bri
Interface IP-Address OK? Method Status Protocol
FastEthernet0 unassigned YES unset up up
FastEthernet1 unassigned YES unset down down
FastEthernet2 unassigned YES unset down down
FastEthernet3 unassigned YES unset up up
FastEthernet4 67.24.4.23 YES DHCP up up
NVI0 unassigned YES unset administratively down down
Vlan1 172.19.156.1 YES NVRAM up up
Vlan20 172.19.191.253 YES NVRAM up up

The CLIFTON router ospf includes the LAN 172.19.156.0/24 and the WAN connection 172.19.191.0/30 in area 0.

What I'm missing is the correct config to add this to the 6900, which on the old 3750 was defined with "network 172.19.191.252 0.0.0.3 area 0" in the original ospf config.

172.19.161.254 is Data ip interface for my 6900.
172.19.191.254 is the ip interface on the 6900 side of the circuit. 172.19.191.253 is the remote end.


Any ideas?

[willmeister]

Figured it out. The problem statement on the far router:

network 172.19.191.252 0.0.0.3 area 0

Couldn't figure a way to do it in dotted decimal on the alcatel side, since that's the backbone. Instead i changed the far end cisco router area:

network 172.19.156.0 0.0.0.255 area 5
network 172.19.191.252 0.0.0.3 area 5

Then on the 6900 added:

ip ospf area 0.0.0.5
ip ospf interface "Clifton"
ip ospf interface "Clifton" area 0.0.0.5
ip ospf interface "Clifton" admin-state enable

converged in 1 second.