Re: OSPF discontiguous areas

Rack1R1#sh run int se1/0
Building configuration...

Current configuration : 106 bytes
!
interface Serial1/0 ( P- p to R2)
 ip address 155.1.10.1 255.255.255.0
 ip ospf 1 area 1
 serial restart-delay 0
end

R2

interface Serial1/0 ( p-P to R1)
 ip address 155.1.10.2 255.255.255.0
 ip ospf 1 area 1
 serial restart-delay 0
!
interface Serial1/1 ( P-P to R3)
 ip address 155.1.20.2 255.255.255.0
 ip ospf 1 area 0
 serial restart-delay 0

R3

interface Serial1/0 (P-P tp R2)
 ip address 155.1.30.3 255.255.255.0
 ip ospf 1 area 1
 serial restart-delay 0
!
interface Serial1/1 (P-P tp R4)
 ip address 155.1.20.3 255.255.255.0
 ip ospf 1 area 0
 serial restart-delay 0

R4

interface Serial1/0
 ip address 155.1.30.4 255.255.255.0
 ip ospf 1 area 1
 serial restart-delay 0
end

Rack1R1#pi 155.1.30.4

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 155.1.30.4, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 40/51/72 ms

Rack1R1#sh ip rou 155.1.30.4
Routing entry for 155.1.30.0/24
  Known via "ospf 1", distance 110, metric 192, type inter area
  Last update from 155.1.10.2 on Serial1/0, 00:08:34 ago
  Routing Descriptor Blocks:
  * 155.1.10.2, from 155.1.20.2, 00:08:34 ago, via Serial1/0
      Route metric is 192, traffic share count is 1

Rack1R1#sh ip rou ospf
     155.1.0.0/24 is subnetted, 3 subnets
O IA 155.1.30.0 [110/192] via 155.1.10.2, 00:08:53, Serial1/0
O IA 155.1.20.0 [110/128] via 155.1.10.2, 00:09:35, Serial1/0

Thanks and Regards,
Mohan Kumar Devarajan

Molomo <letjedilakopa_at_gmail.com>
Sent by: nobody_at_groupstudy.com
09/05/2009 07:10 AM
Please respond to
Molomo <letjedilakopa_at_gmail.com>

To
ccielab_at_groupstudy.com
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Subject
OSPF discontiguous areas

Experts,

I would like to know if the setup below is valid, and whether R1 & R4 will
be able to reach each other.

R1---area 1-----R2---area 0-----R3----area 1-----R4

Regards,
Molomo

Blogs and organic groups at http://www.ccie.net
Received on Sat Sep 05 2009 - 08:19:24 ART