RIP learnt default route not redistributed automatically into

From: Suryakant P (suryakant.pandian@gmail.com)
Date: Sat May 31 2008 - 02:16:01 ART


Hi All,

On a router, I am redistributing rip to ospf.I have a default-route learnt
via RIP installed in the routing table.

While redistributing,this default route is not picked automatically and sent
into the OSPF domain.I had to use default-information originate to pass on
this default route into my ospf domain.

Is this an expected behavior?

Configs :

router ospf 1
 router-id 150.1.7.7
 log-adjacency-changes
 redistribute rip subnets
 network 163.1.0.1 0.0.0.0 area 0
!
router rip
 version 2
 redistribute ospf 1 metric 1
 passive-interface default
 no passive-interface Vlan57
 network 150.1.0.0
 network 163.1.0.0
 no auto-summary

Rack1SW1#show ip route
Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP
       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
       E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
       i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
       ia - IS-IS inter area, * - candidate default, U - per-user static
route
       o - ODR, P - periodic downloaded static route

Gateway of last resort is 163.1.57.5 to network 0.0.0.0

     163.1.0.0/16 is variably subnetted, 5 subnets, 2 masks
O 163.1.0.128/25 [110/2] via 163.1.0.4, 00:06:31, Port-channel14
C 163.1.57.0/24 is directly connected, Vlan57
O 163.1.3.0/24 [110/3] via 163.1.0.4, 00:06:31, Port-channel14
C 163.1.0.0/25 is directly connected, Port-channel14
C 163.1.7.0/24 is directly connected, Vlan7
O IA 10.0.0.0/8 [110/2] via 163.1.0.4, 00:06:31, Port-channel14
     150.1.0.0/24 is subnetted, 1 subnets
C 150.1.7.0 is directly connected, Loopback0
R* 0.0.0.0/0 [120/1] via 163.1.57.5, 00:00:06, Vlan57

Rack1SW1#show ip ospf database external

            OSPF Router with ID (150.1.7.7) (Process ID 1)

                Type-5 AS External Link States

  LS age: 1224
  Options: (No TOS-capability, DC)
  LS Type: AS External Link
  Link State ID: 150.1.7.0 (External Network Number )
  Advertising Router: 150.1.7.7
  LS Seq Number: 80000001
  Checksum: 0x3A22
  Length: 36
  Network Mask: /24
        Metric Type: 2 (Larger than any link state path)
        TOS: 0
        Metric: 20
        Forward Address: 0.0.0.0
        External Route Tag: 0

  LS age: 1224
  Options: (No TOS-capability, DC)
  LS Type: AS External Link
  Link State ID: 163.1.7.0 (External Network Number )
  Advertising Router: 150.1.7.7
  LS Seq Number: 80000001
  Checksum: 0x90BE
  Length: 36
  Network Mask: /24
        Metric Type: 2 (Larger than any link state path)
        TOS: 0
        Metric: 20
        Forward Address: 0.0.0.0
        External Route Tag: 0

  LS age: 1225
  Options: (No TOS-capability, DC)
  LS Type: AS External Link
  Link State ID: 163.1.57.0 (External Network Number )
  Advertising Router: 150.1.7.7
  LS Seq Number: 80000001
  Checksum: 0x68B4
  Length: 36
  Network Mask: /24
        Metric Type: 2 (Larger than any link state path)
        TOS: 0
        Metric: 20
        Forward Address: 0.0.0.0
        External Route Tag: 0
Rack1SW1#

Thanks
With regards
Suryakant



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