From: Liekun Ye (liekun@xxxxxxxxxxxxx)
Date: Tue Oct 09 2001 - 22:14:29 GMT-3
Another scenario is missing "subnet" keyword when doing redistribution to ospf.
The reason that you cannot see the networks in the routing table is that
the ADV router for the Type 5 links are not reachable. Once this is
addressed, you should be fine.
ForCCIElab wrote:
> hi
> everyone ,
> I have a qiz about OSPF
> I can see some Type 5 external link , but they doesn't into the router tabl
e ?
>
>
>
> p2r2#sh ip route
> Codes: C - connected, S - static, I - IGRP, 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, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter ar
ea
> * - candidate default, U - per-user static route, o - ODR
> P - periodic downloaded static route
>
> Gateway of last resort is not set
>
> 172.16.0.0/16 is variably subnetted, 4 subnets, 3 masks
> O IA 172.16.1.33/32 [110/801] via 172.16.2.6, 00:00:03, Serial1
> C 172.16.2.32/27 is directly connected, Loopback100
> O IA 172.16.1.4/30 [110/864] via 172.16.2.6, 00:00:03, Serial1
> C 172.16.2.4/30 is directly connected, Serial1
> p2r2#sh ip ospf d
>
> OSPF Router with ID (172.16.2.5) (Process ID 1)
>
>
> Router Link States (Area 2)
>
> Link ID ADV Router Age Seq# Checksum Link count
> 130.1.4.4 130.1.4.4 43 0x8000000E 0xBF75 2
> 172.16.2.5 172.16.2.5 37 0x80000003 0x173E 3
>
> Summary Net Link States (Area 2)
>
> Link ID ADV Router Age Seq# Checksum
> 172.16.1.4 130.1.4.4 851 0x80000001 0x6E44
> 172.16.1.33 130.1.4.4 851 0x80000001 0xE4EC
>
> Type-5 AS External Link States
>
> Link ID ADV Router Age Seq# Checksum Tag
> 182.18.1.0 182.18.2.1 345 0x80000004 0x3CBC 0
> 182.18.2.0 182.18.2.1 607 0x80000005 0x2FC7 0
> 182.18.3.0 182.18.2.1 1849 0x80000007 0x20D3 0
> 182.18.4.0 182.18.2.1 1849 0x80000007 0x15DD 0
> 182.18.5.0 182.18.2.1 1849 0x80000003 0x12E3 0
>
> p2r2#sh ip ospf d exter
>
> OSPF Router with ID (172.16.2.5) (Process ID 1)
>
>
> Type-5 AS External Link States
>
> LS age: 370
> Options: (No TOS-capability, DC)
> LS Type: AS External Link
> Link State ID: 182.18.1.0 (External Network Number )
> Advertising Router: 182.18.2.1
> LS Seq Number: 80000004
> Checksum: 0x3CBC
> Length: 36
> Network Mask: /24
> Metric Type: 2 (Larger than any link state path)
> TOS: 0
> Metric: 35
> Forward Address: 0.0.0.0
> External Route Tag: 0
>
> LS age: 632
> Options: (No TOS-capability, DC)
> LS Type: AS External Link
> Link State ID: 182.18.2.0 (External Network Number )
> Advertising Router: 182.18.2.1
> LS Seq Number: 80000005
> Checksum: 0x2FC7
> Length: 36
> Network Mask: /24
> Metric Type: 2 (Larger than any link state path)
> TOS: 0
> Metric: 35
> Forward Address: 0.0.0.0
> External Route Tag: 0
-- Daniel Prinsloo Prove IT daniel@prove-it.co.uk www.prove-it.co.uk ICQ 42743324 Fax 0870 135 7712
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