Re: OSPF Stub Default Route Problem

gharehchamani · ‎07-15-2011

HI

I have a non cisco router as totally stub ABR router and a cisco router that connects to that router. Although the default route LSA is in LSDB , the default route isn't coming in this router. Here are some snapshot of my router :

Routing Table: VPN1

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

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 not set

10.0.0.0/8 is variably subnetted, 15 subnets, 4 masks

O 10.39.213.254/32 [110/6601] via 10.39.213.85, 00:01:51, Vlan303

O 10.39.213.253/32 [110/6001] via 10.39.213.85, 00:01:51, Vlan303

C 10.39.213.240/32 is directly connected, Loopback3

C 10.39.213.241/32 is directly connected, Loopback1

C 10.39.213.80/30 is directly connected, Vlan301

C 10.39.213.84/30 is directly connected, Vlan303

O 10.39.213.20/30 [110/11100] via 10.39.213.85, 00:01:51, Vlan303

O 10.39.213.16/30 [110/10700] via 10.39.213.85, 00:01:51, Vlan303

O 10.39.213.0/29 [110/6600] via 10.39.213.85, 00:01:51, Vlan303

O 10.39.213.12/30 [110/11000] via 10.39.213.85, 00:01:51, Vlan303

O 10.39.213.8/30 [110/10600] via 10.39.213.85, 00:01:55, Vlan303

O 10.39.213.36/30 [110/6001] via 10.39.213.85, 00:01:55, Vlan303

O 10.39.213.32/30 [110/36600] via 10.39.213.85, 00:01:55, Vlan303

O 10.34.144.0/23 [110/6001] via 10.39.213.85, 00:01:55, Vlan303

O 10.34.146.0/23 [110/6001] via 10.39.213.85, 00:01:55, Vlan303

Summary Net Link States (Area 0.0.1.10)

Link ID ADV Router Age Seq# Checksum

0.0.0.0 10.39.195.252 1706 0x800028DC 0x0087E0

0.0.0.0 10.39.195.254 752 0x8000282C 0x00DC3A

0.0.0.0 10.39.213.241 1367 0x800000B4 0x00325F

0.0.0.0 10.47.195.252 892 0x80000D67 0x00836D

0.0.0.0 10.47.195.254 886 0x80000D67 0x007777

Has anyone any idea why these don't become the default route ?

Reza Sharifi · ‎07-15-2011

Hi Ahmad,

Who is the vendor for the none cisco vevice and what is the model?

gharehchamani · ‎07-15-2011

Hi, It's HUAWEI ... I'm not sure about the model ...

Konstantin Dunaev · ‎07-15-2011

Hi,

is there adjacency between Cisco and non-cisco device?

gharehchamani · ‎07-15-2011

Yes , the adjacency is full and you see the LSDB and routing table containing all inter-area routes but not the default route from the ABR with is the huawei router and the funny part is that the LSDB contains the summary 0.0.0.0/0 LSA but it doesn't become the default route !

Konstantin Dunaev · ‎07-15-2011

hmm, in your "sh ip ospf data" there is

0.0.0.0 10.39.213.241 1367 0x800000B4 0x00325F

and 10.39.213.241 is configured on the loopback interface, whic means that your cisco router generate a default route as well.

please show the config part for the OSPF on cisco router. Which role has the cisco router? is it only internal OSPF router?

gharehchamani · ‎07-15-2011

Hi , This router is a internal router. Here is its ospf configuration :

router ospf 100 vrf VPN1

router-id 10.39.213.241

log-adjacency-changes

area 0.0.1.10 stub

network 10.39.213.80 0.0.0.3 area 0.0.1.10

network 10.39.213.84 0.0.0.3 area 0.0.1.10

network 10.39.213.240 0.0.0.0 area 0.0.1.10

network 10.39.213.241 0.0.0.0 area 0.0.1.10

Konstantin Dunaev · ‎07-16-2011

it's strange, why there this LSDB entry in cisco's OSPF:

0.0.0.0 10.39.213.241 1367 0x800000B4 0x00325F

could it be the duplicated router-id?

is the device with IP 10.39.213.85 you Huawei router? I don'*t see in database the default route from this router-id.