From: Bob Sinclair (bob@bobsinclair.net)
Date: Sat Mar 25 2006 - 17:55:22 GMT-3
Hi Brent,
As an instructor, I find that when people are learning a new technology it is
best to first present the simplest working scenario, and then build on that.
Accoring to the doc below, the originator-id is necessary under two
circumstances:
1. You have a logical RP and MSDP Mesh-groups
2. The router is a dense-mode/sparse-mode border router...
See the link below:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122cgcr/fipr_
c/ipcpt3/1cfmsdp.htm#1001225
Certainly, if you run into one of those scenarios on the lab, you will want to
use originator-id.
HTH,
Bob Sinclair
CCIE #10427, CCSI 30427
www.netmasterclass.net
----- Original Message -----
From: Brent Foster
To: Bob Sinclair ; david robin ; Cisco certification
Sent: Saturday, March 25, 2006 3:39 PM
Subject: Re: anycast (ip multicast question)
Bob,
Since the goal of most folks in this forum is to
attain CCIE, I believe that if you did not set the
originator-id you would lose those points. Just my
opinion.
--Brent
--- Bob Sinclair <bob@bobsinclair.net> wrote:
> Brent,
>
> Perhaps you mean to say that originator id is
> "desirable". I can assure you
> it is not required in order to do Anycast RP. How
> do I know this? Not from
> reading the docs, but by labbing it up.
>
> Bob Sinclair
> CCIE #10427, CCSI 30427
> www.netmasterclass.net
>
> ----- Original Message -----
> From: Brent Foster
> To: Bob Sinclair ; david robin ; Cisco
> certification
> Sent: Saturday, March 25, 2006 1:31 PM
> Subject: Re: anycast (ip multicast question)
>
>
> Well, originator id is required with Anycast-RP.
> This
> is because you do not want MSDP to set the source
> of a
> multicast stream to the Anycast-RP address, but
> rather
> the real RP address of the router.
>
> This is explained in the Cisco docs.
>
> --Brent
>
> --- Bob Sinclair <bob@bobsinclair.net> wrote:
>
> > Dave,
> >
> >
> > Anycast RP does not require BGP peering.
> >
> > Verify with
> >
> > show ip msdp peer
> > show ip msdp summary
> >
> > originator id is not required
> >
> >
> > Bob Sinclair
> > CCIE #10427, CCSI 30427
> > www.netmasterclass.net
> >
> > ----- Original Message -----
> > From: david robin
> > To: Cisco certification
> > Sent: Saturday, March 25, 2006 1:17 PM
> > Subject: anycast (ip multicast question)
> >
> >
> > I have a question,
> > we have two routers r1 and r2, the two routers
> has
> > the same loopback
> > address
> > ( loop 2) and i want to configure them for rp
> > anycast, this will require
> > msdp configuration as follow:
> >
> > r1
> >
> > ip msdp peer r2 connect-source loop 0
> > ip msdp originator-id loop 0
> >
> > and the same config on r2
> >
> > the question is for the anycast rp to work
> does
> > the two routers require bgp
> > peering between them for the msdp t or not ?
> >
> >
> >
>
>
_______________________________________________________________________
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> >
> >
>
>
_______________________________________________________________________
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> > http://www.groupstudy.com/list/CCIELab.html
> >
>
>
> Brent Foster
> jbrentfoster@yahoo.com
>
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Brent Foster
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