From: Sanjay Bhakta (sbhakta@xxxxxxxxxxx)
Date: Tue Aug 22 2000 - 07:49:54 GMT-3
Since OSPF will send type 2 LSA out within the area, the DR has to be able
to broadcast to all of its neighbors. If you simply give the hub router
higher priority in hub and spoke, you will elect a spoke as BDR. Once your
hub router is reloaded, there will be a new election and the BDR will most
likely be DR. In order to avoid this, a good rule of thumb would be to set
the spokes to priority 0. This will take them out of the election process
completely.
-Sanjay Bhakta (RTP 9/24)
----- Original Message -----
From: "Tony Medeiros" <tonygreat@home.com>
To: "Derek Buelna" <dameon@aracnet.com>; <CCIElab@groupstudy.com>
Sent: Tuesday, August 22, 2000 1:53 AM
Subject: Re: OSPF NBMA mode and priority
> Thank you, I know that especially in a hub and spoke scenario that the DR
> should be at the hub. I usually set this up with the interface command
"ip
> ospf priority XXX". However, If I set up a frame cloud as "ip ospf
> network non-broadcast (NBMA)", hub-and-spoke or fully meshed, I have to
> declare my neighbor statments in (config-router) mode. I can go as far as
> saying what the neighbor I configure priority is going to be, "neighbor
> x.x.x.x prioriy 100" What I can't figure out is when I do configure the
> neighbors priority in this fashion, the interface priority on the
neighbor
> overrides and OVERWRITES the prioriy I declare for it in my neighbor
> statments. Even if I set the interface priority on the offending router
to
> 0. I just can't figure the use of configuring the priority in the
neighbor
> statement if it's just going to get overwritten anyway.......Strange.
IOS
> version is 12.0-(10). This is not a CCIE lab breaker or anything. So
> don't anybody sweat too much. I just thought I had OSPF down pat.
> Thanks again
> Tony.
> ----- Original Message -----
> From: "Derek Buelna" <dameon@aracnet.com>
> To: "'Tony Medeiros'" <tonygreat@home.com>; <CCIElab@groupstudy.com>
> Sent: Monday, August 21, 2000 11:14 PM
> Subject: RE: OSPF NBMA mode and priority
>
>
> It seems that on a network with broadcast capability, DR election is done
> automatically. However, on a NBMA network, you must/should configure this
in
> order for it to work properly.
>
> Thoughts anyone?
>
> -Derek
> -----Original Message-----
> From: Tony Medeiros [SMTP:tonygreat@home.com]
> Sent: Monday, August 21, 2000 9:29 PM
> To: CCIElab@groupstudy.com
> Subject: OSPF NBMA mode and priority
>
> I've been playing around with ospf interface priority makeing various
> router the DR and the BDR. In NBMA mode I can say "neighbor x.x.x.x
> priority 200" in router config mode. However, whenever I do this, the
> interface prioriy statment on the neighboring router overwrites the
priority
> the the neighbor statement. My question is this:
>
> If the interface priority of the neighboring router overwrites whatever I
> put on the router where I call out the priority. What good is this
command
> anyway??????? i.e "neighbor x.x.x.x priority 100"
>
> Thanks in advance
> Tony Medeiros
> (6 days till SJ..........<gulp>
>
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