From: Privat\ ("Erling)
Date: Sat Nov 02 2002 - 18:47:44 GMT-3
Hi,
have a look at following link where your problem is described
http://www.cisco.com/warp/public/104/9.html#QB
Regards
Erling Bjontegard
----- Original Message -----
From: "Benny Chong" <c_benny@hotmail.com>
To: <ccielab@groupstudy.com>
Sent: Saturday, November 02, 2002 3:53 AM
Subject: OSPF --- subnet mask of IA routes
> Hi,
>
> R1 and R2 in area 0, R2 has 2 loopback interface with ip address
> 172.16.1.1/24 and 172.16.2.1/24. I don't understand when R1 learned about
> this two loopback interfaces, it doesn't learn the network 172.16.1.0/24 and
> 172.16.2.0/24, but it learns 172.16.1.1 and 172.16.2.1 instead? I use
> 'network 172.16.1.0 0.0.0.255 area 4' and 'network 172.16.2.0 0.0.0.255 area
> 4) on R2.
>
> R1----------R2 (lo1 and lo2 area 4)
> area 0
>
> The question require that R1 learns these two subnets with a /24 mask, and
> the solution require configure 'ip ospf network point-to-point' under the
> two loopback interfaces in R2. Can someone kindly explain to me? Thanks a
> lot!
>
> Benny
> **********************************************************************
> 'show ip ospf database' in R1:
> Summary Net Link States (Area 0)
>
> Link ID ADV Router Age Seq# Checksum
> 172.16.1.1 200.0.0.6 665 0x80000003 0xC1EA
> 172.16.2.1 200.0.0.6 665 0x80000003 0xB6F4
>
>
>
> R2 routing table:
> 172.16.0.0/24 is subnetted, 2 subnets
> C 172.16.1.0 is directly connected, Loopback1
> C 172.16.2.0 is directly connected, Loopback2
>
> R1 routing table:
> 172.16.0.0/32 is subnetted, 2 subnets
> O IA 172.16.1.1 [110/11] via 150.50.7.6, 01:03:20, Ethernet0
> O IA 172.16.2.1 [110/11] via 150.50.7.6, 01:03:20, Ethernet0
>
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This archive was generated by hypermail 2.1.4 : Tue Dec 03 2002 - 07:22:51 GMT-3