[Xorp-users] role of pimreg interface

Hajnalka Köntös hkontos@gmail.com
Tue, 7 Feb 2006 19:34:03 +0100


If routerA----routerB are connected and both of them are using pimsm,
then which will be selected as pimsm DR? Is there one pimsm DR per
network segment? Is there an option to influence which router be the
DR on a segment?

Thank you,
Hajnalka


On 2/7/06, Pavlin Radoslavov <pavlin@icir.org> wrote:
> > What is the role of the pimreg interface?
> > Is it used differently on a pimsm RP (rendezvous point) router than on
> > non-RP routers ?
>
> It is used by the Designated Routers (DRs) and the RPs.
> On the DR side it is used for the encapsulation and transmission of
> the encapsulated PIM Register packets to the RP.
> On the RP side it is used for the receiving and decapsulation of
> those packets.
>
> Note that any PIM-SM router may be a DR (if it has a
> directly-connected source) hence it should be enabled on all
> routers. Even if you are 100% confident that a router won't have a
> directly-connected source, I still won't recommend disabling it,
> because the result may be unpredictable.
>
> Pavlin
>