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OSPF Questions?

c.khanna
Level 1
Level 1

Hello... I am trying to setup OSPF on a a few Cisco routers. Can someone please take a moment to see if it's right? Thanks in advance!

Scenario:

I have 3 point-to-point (full T1's) running between 3 locations. Router A, Router B, and Router C. Router A has a P2P (point 2 point) running from A-B & A-C. Router B has a P2P running from B-A & B-C. Router C has a P2P running C-A & C-B. All routers have 2 T1 WIC's.

If there are any other statements I need specifically to run OSPF (ex: default route, default gateway), please advise.

****************************************************

Router A: Cisco 2621 (network 192.168.0.0 /24)

Serial: 10.1.1.2 /30

Serial: 10.10.3.4 /30

Ethernet: 192.168.0.254 /24

(router statements)

router ospf 100

network 192.168.0.254 0.0.0.0 area 192.168.0.0

network 10.1.1.2 0.0.0.0 area 0

network 10.10.3.4 0.0.0.0 area 0

****************************************************

Router B: Cisco 1720 (network 10.10.2.0 /24)

Serial: 10.1.1.1 /30

Serial: 10.10.3.2 /30

Ethernet: 10.10.2.254 /24

(router statements)

router ospf 101

network 10.10.2.254 0.0.0.0 area 10.10.2.0

network 10.1.1.1 0.0.0.0 area 0

network 10.10.3.2 0.0.0.0 area 0

****************************************************

Router C: Cisco 1720 (network 10.10.1.0 /24)

Serial: 10.10.3.1 /30

Serial: 10.10.3.5 /30

Ethernet: 10.10.1.254 /24

(router statements)

router ospf 102

network 10.10.1.254 0.0.0.0 area 10.10.1.0

network 10.10.3.5 0.0.0.0 area 0

network 10.10.3.1 0.0.0.0 area 0

****************************************************

1 Reply 1

csyeo
Level 1
Level 1

Hi,

You need to change your network statement under your

ospf process, router A serial IP address is a invalid

ip address.

****************************************************

Router A: Cisco 2621 (network 192.168.0.0 /24)

Serial: 10.1.1.2 /30

Serial: 10.10.3.6 /30

Ethernet: 192.168.0.254 /24

(router statements)

router ospf 100

network 192.168.0.0 0.0.0.255 area 192.168.0.0

network 10.1.1.0 0.0.0.3 area 0

network 10.10.3.4 0.0.0.3 area 0

****************************************************

Router B: Cisco 1720 (network 10.10.2.0 /24)

Serial: 10.1.1.1 /30

Serial: 10.10.3.2 /30

Ethernet: 10.10.2.254 /24

(router statements)

router ospf 101

network 10.10.2.0 0.0.0.255 area 10.10.2.0

network 10.1.1.0 0.0.0.3 area 0

network 10.10.3.0 0.0.0.3 area 0

****************************************************

Router C: Cisco 1720 (network 10.10.1.0 /24)

Serial: 10.10.3.1 /30

Serial: 10.10.3.5 /30

Ethernet: 10.10.1.254 /24

(router statements)

router ospf 102

network 10.10.1.0 0.0.0.255 area 10.10.1.0

network 10.10.3.4 0.0.0.3 area 0

network 10.10.3.0 0.0.0.3 area 0