From: John Gibbs (John.Gibbs@betfair.com)
Date: Wed Jan 07 2004 - 13:31:40 GMT-3
Hi guys
I have been looking at Lo0's config, and the network statement in OSPF
regarding that network. I think that the problem may be that the
network statement in OSPF does not reflect the correct wild card mask.
The wild card mask in the network statement is 0.0.0.7, when in fact it
should be 0.0.7.255. Please correct me if I am wrong.
Regards
John Gibbs CCIE #11572 CNE ACA
Senior Network Designer/Network Team Leader
www.betfair.com
-----Original Message-----
From: Dmitry Volkov [mailto:dmitry.volkov@rogers.com]
Sent: Sunday, January 04, 2004 7:12 PM
To: 'CXP Peter'
Cc: ccielab@groupstudy.com
Subject: RE: Router blew a gasket
Some comment inline:
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
> CXP Peter
> Sent: Sunday, January 04, 2004 1:59 PM
> To: ccielab@groupstudy.com
> Subject: Re: Router blew a gasket
>
>
> IP address 172.16.111.1 255.255.248.0 happens to be on the
> 172.16.104.0/21 subnet and you advertised some addresses from this
> subnet
Network statement under OSPF doesn't advertise addresses it rather
specifies what interface OSPF is running on and OSPF will advertise
actual network configured on this interface, which is /21 in this case.
> with "network
> 172.16.111.0 0.0.0.7 area 11". So it is very normal to see this route
> being advertised in OSPF.
>
> _____________________________
> Peter
> #7247 (R&S, Security, SP)
> CyscoExpert Corp.
> 4433 W. Touhy Ave. Suite 410
> Lincolnwood, IL 60712
> Phone (847) 674-3392
> Toll Free (866) CyscoXP (297-2697)
> Fax (847) 674-2625
>
> ----- Original Message -----
> From: "John Underhill" <stepnwlf@magma.ca>
> To: <ccielab@groupstudy.com>
> Sent: Sunday, January 04, 2004 12:36 PM
> Subject: Router blew a gasket
>
>
> > I was looking through the routing tables and noticed a
> route I didn't
> > advertise. This is really strange, because it says loop0 is
> connected on
> this
> > box in the route table, and is advertising it into OSPF,
> but the loop0
> address
> > that is configured is not the same, (not even close), and I never
> advertised
> > this network in OSPF. Router has been rebooted and erased
> since the last
> > config, but it looks like it's keeping it in memory.. pretty weird..
> >
> > 172.16.0.0/16 is variably subnetted, 9 subnets, 5 masks
> > C 172.16.134.0/24 is directly connected, Serial0.2
> > O IA 172.16.44.0/29 [110/65] via 172.16.134.4, 00:03:52,
> Serial0.2
> > O IA 172.16.22.0/27 [110/65] via 172.16.123.2, 00:03:52,
> Serial0.1
> > C 172.16.1.0/24 is directly connected, Serial1
> > C 172.16.123.0/24 is directly connected, Serial0.1
> > C 172.16.104.0/21 is directly connected, Loopback0
> <-- This one --
> > R1#
> > !
> > interface Loopback0
> > ip address 172.16.111.1 255.255.248.0
> > no ip directed-broadcast
> > no ip route-cache
> > ip ospf network point-to-point
> >
> > router ospf 110
> > area 111 virtual-link 172.16.134.4
> > network 172.16.111.0 0.0.0.7 area 11
> > network 172.16.123.0 0.0.0.255 area 0
> > network 172.16.134.0 0.0.0.255 area 111
> >
> > Routing table on another box shows the route..
> >
> > C 172.16.122.0/27 is directly connected, Loopback0
> > C 172.16.22.0/24 is directly connected, Dialer0
> > C 172.16.22.1/32 is directly connected, Dialer0
> > C 172.16.123.0/24 is directly connected, Serial0.1
> > O IA 172.16.104.0/21 [110/65] via 172.16.123.1,
> 00:01:58, Serial0.1
> > R2#
> >
> >
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