From: Peng Zheng (zpnist@yahoo.com)
Date: Sun Jun 13 2004 - 03:37:25 GMT-3
I thought this way too.
During the practice, I didn't enable sparse-dense-mode
on the interfaces, and didn't (actually I can not, I'm
using 2500s with IOS 12.2.1d) enter ip pim auto-rp
listener, but it works. That make me confuse.
--- Bob Sinclair <bsin@cox.net> wrote:
> Peng,
>
> Auto-RP requires that the candidates announce on
> dense-mode groups
> 224.0.1.39, and that the mapping agent announce the
> RP on dense mode group
> 224.0.1.40. You can either use sparse-dense mode on
> the interfaces, or you
> can enter ip pim auto-rp listener in global config
> of each router. The
> latter command permits dense mode on
> sparse-configured interfaces only for
> the auto-rp groups.
>
> HTH,
>
> Bob Sinclair
> CCIE #10427, CISSP, MCSE
> www.netmasterclass.net
>
> ----- Original Message -----
> From: "Peng Zheng" <zpnist@yahoo.com>
> To: <ccielab@groupstudy.com>
> Sent: Saturday, June 12, 2004 9:30 PM
> Subject: sparse-mode and auto-rp
>
>
> > R1(s0)----------(s0)R2(s1)-----(s1)R3(e0)
> > |(bri0) (bri0)|
> > |__________________|
> >
> > Run ospf on all the interface.
> >
> > ip pim sparse-mode under lo0 of R1 and R2, bri0 on
> R1
> > and R1, s1 on R2 and R3.
> >
> > And
> > lo0 of R1 is rp.
> > lo0 of R2 is MA.
> >
> > I thought auto-rp only work with
> sparse-dense-mode,
> > but in my config, if I config: ip igmp join-group
> > 225.25.25.25 under e0 of R3, then I can ping it
> from
> > r1 and R2.
> >
> > And also I don't need to config ip pim sparse-mode
> > under e0 of R3.
> >
> >
> > I want to know if auto-rp can work with
> sparse-mode
> > and if I need to config ip pim sparse-mode under
> the
> > interface where I type ip igmp join-group?
> >
> > Thanks for any comment.
> >
> >
> >
> >
> >
> >
> >
> > __________________________________
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This archive was generated by hypermail 2.1.4 : Sat Jul 03 2004 - 19:40:39 GMT-3