From: Mike Williams (ccie2be@swbell.net)
Date: Sat Dec 27 2003 - 02:53:16 GMT-3
Is it possible that by specifying a priority with the neigbor command
that it's overriding the priority that's being sent? I know this
doesn't seem to make sense as it would be silly to do so, but possible?
Otherwise, I'd agree that there's really no reason to specify the
priority on the neighbor command (not only no reason to specify, but no
reason for Cisco to even have that command as a option unless there's
*some* functionality, although it wouldn't be the first time =)
Mike W.
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Dmitry Volkov
Sent: Friday, December 26, 2003 10:24 PM
To: 'P729'; 'Bob Sinclair'; 'Ashok Verma (ashoverm)'
Cc: ccielab@groupstudy.com
Subject: RE: OSPF in NBMA networks
Ok. This is all true. But what is the purpose of such "indication" ??
Surprisingly enough that Syed Faraz Shamim - author of "Troubleshooting
IP routing protocols" also follows Doyle's "mistake" (page 557-558)
http://www.cisco.com/en/US/tech/tk365/tk480/technologies_configuration_e
xamp
le09186a0080094054.shtml#4
router ospf 1
network 1.1.1.0 0.0.0.255 area 0
neighbor 1.1.1.2 priority 2
!--Used to manually configure neighbors and assign
the priority. In case of a Hub and Spoke topology,
the Hub should be elected as the DR as it has
connectivity to all the spokes. This can be done
by assigning higher priority to the Hub using the
neighbor command on the Spoke routers
Dmitry
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
> P729
> Sent: Friday, December 26, 2003 2:24 PM
> To: Bob Sinclair; Ashok Verma (ashoverm); ccielab@groupstudy.com
> Subject: Re: OSPF in NBMA networks
>
>
> 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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