From: Ronnie Angello (ronnie.angello@gmail.com)
Date: Sat Jan 13 2007 - 19:31:46 ART
A router's neighbor priority setting (neighbor command) is compared with the
priority inside of the hello that it receives from the neighbor. The larger
of the two values is used.
Ronnie
On 1/2/07, Bit Gossip <bit.gossip@chello.nl> wrote:
>
> So can we summarize it like this?
>
> - neighbor x.x.x.x [priority p] can be used only for 'ip ospf network
> non-broadcast' because in point-to-multipoint non-broadcast' there is no
> DR/BDR
> - it has no effect to set the real priority: the priority set on the
> interface always override the neighbor priority
> - the only effect is with 'neighbor x.x.x.x priority 0' to prevent
> x.x.x.x to become DR
>
> Thanks,
> Luca
>
>
> On Tue, 2007-01-02 at 04:54, Thiago Vazquez wrote:
> > When the router first starts up, it sends only hello packets to those
> routers with nonzero priority, that is, routers that are eligible to become
> designated routers (DRs) and backup designated routers (BDRs). After the DR
> and BDR are selected, DR and BDR will then start sending hello packets to
> all neighbors in order to form adjacencies.
> >
> >
> http://www.cisco.com/univercd/cc/td/doc/product/software/ios124/124cr/hirp_r/rte_osph.htm#wp1001398
> >
> >
> > -----Original Message-----
> > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
> > Ronnie Angello
> > Sent: 02 January 2007 03:15
> > To: Bit Gossip
> > Cc: groupstudy
> > Subject: Re: OSPF neighbor priority
> >
> >
> > The default is 0, but you must configure the neighbor's interface with
> > priority 0 to keep the router from participating in DR election. I'm
> with
> > you...what's the use of configuring the priority with the neighbor
> command
> > if you have to configure it on the interface anyway?
> >
> > On 1/1/07, Bit Gossip <bit.gossip@chello.nl> wrote:
> > >
> > > I am very confused on the matter after the following lab setup:
> > >
> > > interface Serial0/0
> > > ip address 192.168.192.6 255.255.255.0
> > > ip ospf network non-broadcast
> > > ...
> > > router ospf 6
> > > neighbor 192.168.192.3
> > > ...
> > >
> > > According to doc, default priority for the neighbor statement is 0 so
> > > 192.168.192.3 should have priority 0; instead:
> > >
> > > r6#show ip ospf neighbor 192.168.118.3
> > > Neighbor 192.168.118.3, interface address 192.168.192.3
> > > In the area 0 via interface Serial0/0
> > > Neighbor priority is 1 (configured 0), State is FULL, 18 state
> > >
> > > Where is this priority 1 coming from? Maybe the default priority
> applied
> > > at the interface of 192.168.192.3?
> > >
> > > But this is not logical because the neighbor statement, being more
> > > specific should prevail over the interface priority....
> > >
> > > Thanks,
> > > Luca.
> > >
> > >
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