From: Charles Ragan (ciscojock2002@yahoo.com)
Date: Fri Dec 26 2003 - 20:41:55 GMT-3
this is very interesting. i noticed this _capability_ in the win2k ospf
configuration as well (try to set the neighbor's priority on an nbma) - and
tried it against a couple of routers...nothing. i had never used and
didn't know it didn't work....except on an interface basis for a given
router priority.
i didn't see anything about it in the standards (must/should) either. is
rfc 3101 with e,p,n bits the most recent options for hellos?
thinking about it, doesn't accomplish much more than jacking the hub site
to a crazy high priority value....
things that make you go hmm.... :)
At 11:24 AM 12/26/2003 -0800, P729 wrote:
>Great explanation Bob. Another clue is there is no provision in the OSPF
>Hello protocol for telling a neighbor what the neighbor's priority should
>be. You only indicate what your own priority is.
>
>Happy holidays,
>
>Mas Kato
>https://ecardfile.com/id/mkato
>
>----- Original Message -----
>From: "Bob Sinclair" <bsin@cox.net>
>To: "Ashok Verma (ashoverm)" <ashoverm@cisco.com>; <ccielab@groupstudy.com>
>Sent: Friday, December 26, 2003 8:03 AM
>Subject: Re: OSPF in NBMA networks
>
>
> > Ashok,
> >
> > What you are seeing is common and probably not a "bug".
> >
> > Much of the documentation seems to say that you can control the priority
>of
> > a neighbor with this command. But the command docs actually say that the
> > neighbor priority command "indicates the router priority value of the
> > nonbroadcast neighbor associated with the IP address specified". In
> > practice, it "indicates" the same way a speedometer "indicates" your
>speed:
> > it shows but does not determine.
> >
> > Even Doyle seems to say that you can control a neighbor's priority with
>this
> > command, but I have never seen it actually work.
> >
> > In practice, you will find that only entering the priority on the local
> > interface will actually determine a priority. You will also find that the
> > local neighbor priority command reflects the priority configured on the
> > remote neighbor interface, and will change with it.
> >
> > HTH,
> >
> > -Bob Sinclair
> > CCIE #10427, CISSP, MCSE
> > www.netmasterclass.net
> >
> > ----- Original Message -----
> > From: "Ashok Verma (ashoverm)" <ashoverm@cisco.com>
> > To: <ccielab@groupstudy.com>
> > Sent: Friday, December 26, 2003 5:20 AM
> > Subject: OSPF in NBMA networks
> >
> >
> > > Hi All
> > >
> > > I have a query about NEIGHBOR command, which is used in the NBMA network
> > > to make the ospf peering
> > >
> > > When we define the #neighbour x.x.x.x priority 0
> > >
> > > What is the priority 0 means . Is it mean the other side router can not
> > > become the DR .
> > >
> > > One more observation I have is even if configure the # neighbour x.x.x.x
> > > priority 0
> > >
> > > When I check the configuration I see it as #neighbour x.x.x.x priority 1
> > > .....is it a bug ?
> > >
> > >
> > > Thanx
> > >
> > > Ashok Kumar Verma
> > > CCIP,CCDP,CCNP
> > > Network Consulting Engineer
> > > Customer Advocacy Advanced Service Dep.
> > > Service Provider AS Div.2
> > > Cisco Systems, K.K.Japan.
> > >
> > > Tel: +81-3-5324-4583
> > > e-mail: ashoverm@cisco.com
> > >
> > > _______________________________________________________________________
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