From: Chua, Parry (Parry.Chua@xxxxxxxxxx)
Date: Thu Mar 14 2002 - 22:01:20 GMT-3
DR is require for any multiaccess network type regardless it is broadcast or no
n-broadcast.
The reason is in ospf, a neigh is require, in a multiaccess network, there are
"n" devices,
so number of neigh require will be n*(n-1)/2, so with DR/BDR, each DR/BDR will
have (n-1) neigh
and Dother will have 2 neighs.
> Parry Chua
>
-----Original Message-----
From: Shadi [mailto:ccie@investorsgrp.com]
Sent: Thursday, March 14, 2002 10:14 PM
To: Chua, Parry
Cc: ccielab
Subject: Re: when do we need to nail the DR priority?
That is always when using Broadcast or non-broadcast networks right?
----- Original Message -----
From: "Chua, Parry" <Parry.Chua@compaq.com>
To: "Michael C. Popovich" <mpopovich@layer3.biz>; "Bhisham Bajaj"
<bhishambajaj@yahoo.com>; "Shadi" <ccie@investorsgrp.com>; "ccielab"
<ccielab@groupstudy.com>
Sent: Thursday, March 14, 2002 12:23 PM
Subject: RE: when do we need to nail the DR priority?
You must ensure that the spoke's can never be a DR or not even a BDR, set it
priority to 0 is the answer.
Regards
Parry
-----Original Message-----
From: Michael C. Popovich [mailto:mpopovich@layer3.biz]
Sent: Thursday, March 14, 2002 12:08 AM
To: Bhisham Bajaj; Shadi; ccielab
Subject: RE: when do we need to nail the DR priority?
How would this work in the following scenario.
R1 is hub in a frame network with R2 and R3 the spoke for multipoint
network.
You have set R1 to be the DR and R2 to be the BDR. R1 goes down so R2 is
then DR. R1 comes back up. How do we get R1 to become DR again? I
thought this was discussed a couple of months ago but I can't seem to
find the answer.
MP
-----Original Message-----
From: Bhisham Bajaj [mailto:bhishambajaj@yahoo.com]
Sent: Wednesday, March 13, 2002 9:32 AM
To: Shadi; ccielab
Subject: Re: when do we need to nail the DR priority?
with Fr the hub has to be the dr
your network will go for a tos if the spoke becomes
the Dr
so it is very Imp in Fr
but in lan there is no problem any roter can be the dr
Bajaj
> Hi,
>
> During my studies, I saw that we should always nail
> the DR Router by ip ospf
> priority, so that always that router be the DR when
> using Frame-relay with
> broadcast or non broadcast network type.
>
> What about Ethernet network why we don't nail it
> too?
>
>
> Shadi
>
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