Network redistribution in OSPF

[santoshvijapur]

   Hi All ,

I need your help .

Switch running with two OSPF  process  100 and 200 .    interface VLAN configured  on the same switch  10.200.81.1/24 advertised under process OSPF process 100

The segment 10.200.81.0/24 which is advertised  under process 100 connected to diffrent network . 

The  requirment  is   need to advertise 2 /32  10.200.81.100 & 101 network address  in to the OSPF process 200 which is connected to again diffrent vendor

currently I am advertising remote networks  through static redistribution in OSPF porcess 200 .

here I cannot use static redistribution since  advertise newtork is belongs to the same device  ,also I cannot configure under OSPF 200  ,network statement   "network 10.200.81.0 0.0.0.255 area x."

router ospf 100

network 10.200.81.0 0.0.0.255 area 6

router ospf 200

redistribute static subnets route-map TEST

     6509-Core#sh route-map TEST

route-map TEST, permit, sequence 10
  Match clauses:
    tag 250
  Set clauses:
  Policy routing matches: 0 packets, 0 bytes

switch (config)# ip route 10.1.84.11 255.255.255.255 10.100.11.1 tag 250

[Giuseppe Larosa · Accepted solution]

Hello Santos,

you can consider redistributing of OSPF process 100 into OSPF process 200 using a route-map, but this can work only for existing routes and you need also to provide a return path.( may be generating a default route into process 100 if acceptable)

example:

router ospf 200

redistribute ospf 100 subnets type 1 metric 10 route-map selected

route-map selected permit 10

match ip address prefix selroutes

ip prefix-list selroutes permit 5 10.10.20.0/24

Hope to help

Giuseppe