[pim] Re: PIM-SM with IPv6 addresses

["varun srivastava" <varun.maillistid at gmail.com>]

Hi Nidhi,
I don't want to use any IGP . So in absence of IGP what are the options left ?
My basic questions is :- if I am already advertsing relationship
between router-a link local address and router-a global address in
hello message then why an extra route entry [either thru IGP or static
route] is needed to ask router to fwd router-a global address packets
to router-a link local address?
--
varun

On 7/11/06, Nidhi Bhaskar <nbhaskar at cisco.com> wrote:
> > Hi,
> > I have following queries regarding using PIM-SM over IPv6.
> > consider the following topology
> >
> > <router-a>BSR/RP------------<router-b>----------<host-b>
> >
> > 1) In PIM BSR message from router-a I keep source address as link
> > local ipv6 address in ipv6 header, and I'm using one global ipv6
> > address to advertise as BSR address (as link local scope can not be
> > advertised as global BSR). is this is correct ?
>
> That is correct.
>
> > 2) In this case I think we need to advertise global ipv6 address of
> > router-a in Hello message under option type 24. Now I think this
> > advertising of global ipv6 address as secondary address for the link
> > local address should be enough. But when I'm sending Join/Prune
> > packets from host-b to router-b with RP address as global ipv6 address
> > of router-a then router-b is failing RPF  check as it is not getting
> > any link for global ipv6 address of router-a. Can you suggest what
> > extra should be done ?
>
> That is odd. What IGP are you running ? You shouldn't RPF fail on
> router-b for a directly connected IPv6 address. I suspect something
> may be broken in unicast routing. Make sure the interface on which you
> have the global RP address configured is also enabled for your v6
> unicast routng protocol.
>
> Nidhi.
>
> > Note: router-b is cisco 7200 and if I explicitly add static route for
> > router-a global ipv6 address then every thing works fine , so I guess
> > problem is dynamic mapping of secondary global address to primary link
> > local address of router-a.
> >
> > waiting for early help
> > Regards
> > Varun
> >
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> > pim at ietf.org
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> >
> >

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