From: Curtis Call (curtiscall@xxxxxxx)
Date: Fri Nov 02 2001 - 20:50:24 GMT-3
Is A the endpoint of a Virtual-Link with B? If so then that explains why you
have an intra-area OSPF route (from area 0) for the network in question. show
ip ospf database router and show ip ospf database summary on Router A would be
beneficial to determining what is going on.
VAUTRIN Olivier <olivier.vautrin@arche.fr> wrote:
> Hello Everybody,
>
> I have a problem with the command "area # range..." with OSPF:
>
> I have this configuration:
>
> A----B----C
>
> A is in Area 2
> C is in Area 0
>
> A is connected to the Eth0 on my conf
> C is connected to my serial0
>
> I am using the command "area 0 range 170.10.7.0 255.255.255.0"
>
> But when I look at the Routing table of A, I get:
>
>
> routerA#r
> 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, * - candidate
> default
> U - per-user static route, o - ODR
>
> Gateway of last resort is not set
>
> 170.10.0.0/16 is variably subnetted, 10 subnets, 4 masks
> C 170.10.128.0/26 is directly connected, Ethernet0
> I 170.10.1.0/24 [100/8576] via 170.10.2.1, 00:00:11, Serial1
> C 170.10.2.0/24 is directly connected, Serial1
> C 170.10.3.0/24 is directly connected, Serial0
> R 170.10.4.0/24 [120/1] via 170.10.3.3, 00:00:11, Serial0
> C 170.10.5.0/24 is directly connected, Loopback0
> O 170.10.7.0/28 [110/74] via 170.10.128.5, 00:37:09, Ethernet0
> <----------????? (I would like to see /24!)
> O 170.10.8.0/24 [110/1636] via 170.10.128.5, 00:37:09, Ethernet0
> R 170.10.8.2/32 [120/1] via 170.10.3.3, 00:00:11, Serial0
> O 170.10.9.5/32 [110/11] via 170.10.128.5, 00:39:06, Ethernet0
> C 192.19.15.0/24 is directly connected, Ethernet0
> RouterA#
>
>
> Any ideas?
>
> Cheers,
> Olivier Vautrin.
>
> I am using version:
> RouterB#sh ver
> Cisco Internetwork Operating System Software
> IOS (tm) 2500 Software (C2500-JS-L), Version 11.2(26a), RELEASE SOFTWARE
> (fc1)
> Copyright (c) 1986-2001 by cisco Systems, Inc.
> Compiled Thu 07-Jun-01 08:27 by leccese
> Image text-base: 0x03040454, data-base: 0x00001000
>
> Here is the configuration of my router B:
>
> RouterB#sh run
> RouterB#sh running-config
> Building configuration...
>
> Current configuration:
> !
> version 11.2
> no service password-encryption
> no service udp-small-servers
> no service tcp-small-servers
> !
> hostname RouterB
> !
> enable secret 5 $1$Aftb$i8EXJYT93xVhw5/bQSiXY1
> !
> ip subnet-zero
> no ip domain-lookup
> !
> interface Loopback0
> ip address 170.10.9.5 255.255.255.0
> !
> interface Ethernet0
> ip address 170.10.128.5 255.255.255.192
> !
> interface Serial0
> ip address 170.10.7.5 255.255.255.240
> encapsulation frame-relay
> no fair-queue
> !
> interface Serial1
> no ip address
> shutdown
> !
> router ospf 1
> network 170.10.7.5 0.0.0.0 area 0
> network 170.10.128.5 0.0.0.0 area 2
> network 170.10.9.5 0.0.0.0 area 2
> neighbor 170.10.7.3
> neighbor 170.10.7.2
> area 0 range 170.10.7.0 255.255.255.0
> area 2 virtual-link 170.10.5.4
> !
> ip classless
> !
> alias exec c conf t
> alias exec r show ip route
> alias exec s show run
> alias exec b sho ip int brief
> !
> line con 0
> exec-timeout 0 0
> password c
> logging synchronous
> line aux 0
> exec-timeout 0 0
> password c
> logging synchronous
> line vty 0 4
> exec-timeout 0 0
> password c
> logging synchronous
> login
> !
> end
----------
curtiscall@usa.net
OSPF/BGP Practice Exams
www.boson.com\tests\Advanced.htm
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