From: Brian McGahan (bmcgahan@internetworkexpert.com)
Date: Thu Sep 23 2004 - 20:16:45 GMT-3
In actuality it's the first statement in the configuration that
determines what area the interface is. What changed in the
implementation is that the IOS automatically re-orders the statements
with the most specific on top now. Before the order in the config was
as you typed it in.
R1(config)#router ospf 10
R1(config-router)# network 1.0.0.0 0.255.255.255 area 0
R1(config-router)# network 1.2.3.4 0.0.0.0 area 1
R1(config-router)#
R1(config-router)#router ospf 20
R1(config-router)# network 1.2.3.4 0.0.0.0 area 1
R1(config-router)# network 1.0.0.0 0.255.255.255 area 0
R1(config-router)#do sh run | b router ospf 10
router ospf 10
log-adjacency-changes
network 1.2.3.4 0.0.0.0 area 1
network 1.0.0.0 0.255.255.255 area 0
!
router ospf 20
log-adjacency-changes
network 1.2.3.4 0.0.0.0 area 1
network 1.0.0.0 0.255.255.255 area 0
HTH,
Brian McGahan, CCIE #8593
bmcgahan@internetworkexpert.com
Internetwork Expert, Inc.
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> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
Of
> Anand Singh
> Sent: Thursday, September 23, 2004 5:21 PM
> To: 'Zachary Hinz'; duncan5322@bellsouth.net; ccielab@groupstudy.com
> Subject: RE: OSPF Question
>
> Zachary,
>
> I checked on 12.3 T image and more specific one wins and I am sure
> that's the case for 12.2T. Now coming back to the point where this
> change was done, I see that we had couple of fixes in 12.0(8.1)T for
> overlapping netwroks and I think its changed from then onwards.
However,
> I haven't verified this on a router..
>
> Thanks
> -Anand
>
> > -----Original Message-----
> > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On
> > Behalf Of Zachary Hinz
> > Sent: Thursday, September 23, 2004 3:01 PM
> > To: anandksi@cisco.com; duncan5322@bellsouth.net;
> > ccielab@groupstudy.com
> > Subject: RE: OSPF Question
> >
> >
> > Everyone is saying that the interface will run in area 1.
> > What version of
> > code did this change in? It used to be that the statements
> > were read in
> > order. Most of us have Routing TCP/IP vol. 1. Check out
> > pages 576 and 577.
> >
> > Zac Hinz
> > CCIE 12419
> >
> >
> > ----Original Message Follows----
> > From: "Anand Singh" <anandksi@cisco.com>
> > Reply-To: "Anand Singh" <anandksi@cisco.com>
> > To: <duncan5322@bellsouth.net>, <ccielab@groupstudy.com>
> > Subject: RE: OSPF Question
> > Date: Thu, 23 Sep 2004 11:03:33 -0700
> >
> > More specific one's are prefered. So "network 172.1.1.0
> > 0.0.0.255 area
> > 1" will win.
> >
> > Thanks
> > -Anand
> >
> > > -----Original Message-----
> > > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]
> > On > Behalf Of duncan5322@bellsouth.net > Sent: Thursday,
> > September 23, 2004 10:28 AM > To: ccielab@groupstudy.com >
> > Subject: OSPF Question > > > Could someone help me with
> > this? > Let's say I have this config. > > ROUTER OSPF 10
> > > network 172.1.0.0 0.0.255.255 area 0
> > >
> > >
> > > and I add:
> > > network 172.1.1.0 0.0.0.255 area 1
> > >
> > > which area will 172.1.1.0 be advertised in? Will the more
> > > specific statement override the more general one even
> > though > it comes later in the config? > > Thanks > >
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This archive was generated by hypermail 2.1.4 : Fri Oct 01 2004 - 15:00:48 GMT-3