Hi All!
I can't solve one problem with external default route in the standard OSPF area. I have three OSPF-routers: R1, R2, R4. R1 knows the default route which are distributed from IBGP to OSPF. Also R1 has a neighborship with R2 and line "default-information originate" in the OSPF configuration.
This is OSPF configiguration from R1:
router ospf 2 vrf internet
router-id 10.24.42.1
redistribute bgp 28769 subnets route-map internet-to-ospf
passive-interface default
no passive-interface TenGigabitEthernet0/0/0
no passive-interface TenGigabitEthernet0/2/0
default-information originate
distribute-list route-map internet-from-ospf in
Te0/0/0 and Te0/2/0 are links with R2 and both have OSPF enabled.
This is the part of "sh ip ospf 1 database external" output from R2:
Type-5 AS External Link States
Routing Bit Set on this LSA in topology Base with MTID 0
LS age: 855
Options: (No TOS-capability, DC, Upward)
LS Type: AS External Link
Link State ID: 0.0.0.0 (External Network Number )
Advertising Router: 10.24.42.1
LS Seq Number: 80000006
Checksum: 0x635B
Length: 36
Network Mask: /0
Metric Type: 2 (Larger than any link state path)
MTID: 0
Metric: 1
Forward Address: 0.0.0.0
External Route Tag: 3489689697
So R2 knows this route by OSPF and installs it to the routing table:
O*E2 0.0.0.0/0 [110/1] via 80.240.47.61, 01:17:29, TenGigabitEthernet0/3/0
[110/1] via 80.240.47.57, 01:17:29, TenGigabitEthernet0/1/0
Then R2 has a neighborship with R3 (R1 and R3 aren't neighbors).
R3 has the same LSA-5 in it's LSDB:
LS age: 1096
Options: (No TOS-capability, DC, Upward)
LS Type: AS External Link
Link State ID: 0.0.0.0 (External Network Number )
Advertising Router: 10.24.42.1
LS Seq Number: 80000006
Checksum: 0x635B
Length: 36
Network Mask: /0
Metric Type: 2 (Larger than any link state path)
MTID: 0
Metric: 1
Forward Address: 0.0.0.0
External Route Tag: 3489689697
But R3 doesn't install default route to the rouing table.
There are a lot of other routes in the R3's routing table throughout R2 exist and default route only was missed .
What is wrong?
Thank you for any help!
Best regard,
Konstantin V.
