RE: [nsp] : OSPF

From: Nate Buffington (nate@interaccess.com)
Date: Tue Dec 12 2000 - 18:59:56 EST


Hello Mounir,

I think there are a couple of problems here.

> Part of 7513 configuration
> !
> interface Serial10/1/4
> description connected to sonianet
> ip address 10.1.49.1 255.255.255.252
> no ip route-cache distributed
> !
> router ospf 1
> redistribute connected
> redistribute static metric 1
> network 10.101.1.0 0.0.0.255 area 0
> network 212.217.70.96 0.0.0.15 area 3
> default-information originate

The interface IP is inconsistent with the ospf network statement, which
should read 'network 10.1.49.0 0.0.0.255 area 0', assuming that you want to
include it in area 0.

The next problem I see is an area mismatch.

7513:
> router ospf 1
> redistribute connected
> redistribute static metric 1
> network 10.101.1.0 0.0.0.255 area 0
> network 212.217.70.96 0.0.0.15 area 3
> default-information originate

1603:
> router ospf 1
> network 10.1.49.0 0.0.0.3 area 3
> network 212.217.70.96 0.0.0.15 area 3

The two 10.x.x.x networks are in different areas. Since I don't see any
interface information for the 212.217.70.96 network, I assume that the two
routers are connected by the 10. serial line. One or the other of them need
to be changed so that they are both in the same area. The inverse netmask
mismatch should'nt matter, since all that does is tell which interfaces to
send out OSPF hellos on. Since the /30 mask on the 1603 network statement
covers the ips in question, I don't think it's a problem.

Nate

> -----Original Message-----
> From: Mounir AZIZI [mailto:mounir.azizi@wanadoo.co.ma]
> Sent: Tuesday, December 12, 2000 3:43 AM
> To: Cisco NSP
> Subject: [nsp] [nsp] : OSPF
>
>
> Hello, i need help from you.
> i have one 7513 router connected to the Internet(static routing),
> and other
> 1603 router connected to the 7513 using Leased line. i try to
> implement OSPF
> between them but it doesn't work, i give you a part of
> configuration, may be
> you can see the problem:
>
> Part of 7513 configuration
> ....
> !
> interface Serial10/1/4
> description connected to sonianet
> ip address 10.1.49.1 255.255.255.252
> no ip route-cache distributed
> !
> router ospf 1
> redistribute connected
> redistribute static metric 1
> network 10.101.1.0 0.0.0.255 area 0
> network 212.217.70.96 0.0.0.15 area 3
> default-information originate
> !
> ....
>
> Part of client 1603 configuration
> !
> interface Serial0
> ip address 10.1.49.2 255.255.255.252
> no ip mroute-cache
> no fair-queue
> !....
> router ospf 1
> network 10.1.49.0 0.0.0.3 area 3
> network 212.217.70.96 0.0.0.15 area 3
> !
>
>
> Best regards,
>
> Mounir AZIZI
>
>



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