From: Joe Higgins (netsat@xxxxxxxxxxxxx)
Date: Sat Aug 24 2002 - 10:36:13 GMT-3
If you are using frame relay physical(multipoint) interfaces then use point to
point between state and regional router interfaces or change it to hdlc and see
if it works. I believe that there is a problem with auto-rp multicasting
through multiple router frame relay physical interfaces although I was unable t
o
find anything on CCO to support this belief.
"Krucker, Louis" wrote:
> Hi all
>
> Auto-RP Issues with NBMA Mode
>
> Mapping Agent (MA)
>
> Use the following guidelines when placing the MA in your network:
> 1.All candidate RPs must be connected to the MA.
> 2.All MAs must be connected to all PIM routers.
>
> If you check the title of this section, it means for nbma mode !
>
> NBMA Mode is used for hub and spoke topology.
>
> As i understand multicast, an multicast Interface will only join a multicast
> group if there is a multicast server connected witch send multicast traffic
> to a certain group address or if you put the join group command on the
> interface.
> I have setup this scenario in my lab and it works fine, i have put the MA
> once in the middle and on the second try at the "HQ" router. In both
> scenarios the "state" router learns the RP from the HQ router.
> A common mistake is if you forgot to put the "broadcast" keyword on
> frame-maps you can verify with show ip igmp neighbors on ALL routers,
> however i would put the MA in the middle of those routers.
>
> Your config is OK, when you see the rp on the regional and the state router.
>
> 1. Go to state router and ping your group address.
> 2. Type show ip pim rp
>
> If you see the rp mapping than its ok
>
> Hope this helps
>
> cheers
> Louis
>
>
>
> -----Original Message-----
> From: Sathia Seelan
> To: William Wong Kun Sing; 'Groupstudy'
> Sent: 24.08.2002 11:13
> Subject: RE: IP Multicast
>
> Hi ,
>
> >From the cco :
> http://www.cisco.com/univercd/cc/td/doc/cisintwk/intsolns/mcst_sol/frm_r
> lay.
> htm
>
> Mapping Agent (MA)
>
> Use the following guidelines when placing the MA in your network:
> 1.All candidate RPs must be connected to the MA.
> 2.All MAs must be connected to all PIM routers.
>
> I guess in your case it should be at the Regional router.
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
> William Wong Kun Sing
> Sent: Saturday, August 24, 2002 11:27 AM
> To: 'Groupstudy'
> Subject: IP Multicast
>
> Hi guys
>
> I have problem in my multicast lab for the Auto-RP scenario:
>
> -----------e0--HQ--s0------------------------s0--Regional--s1-----------
> ----
> -----s1--State--e0---------------------------
>
> Only HQ router will join a multicast group which is 224.10.10.1 on e0
> interface
> Cannot use static RP statement on all the routers
> HQ router also is the RP for 224.10.0.0/16 group
> At the end of the lab, State router should be able to ping both
> multicast
> group.
>
> My config is as the below:
>
> HQ router:
>
> ip multicast-routing
>
> int lo0
> ip pim sparse-d
>
> int e0
> ip pim sparse-d
> ip igmp join 224.10.10.1
>
> int s0
> ip pim sparse-d
>
> ip pim send-rp-announce lo0 scope 32 group-list 1
> ip pim send-rp-discovery lo0 scope 32
>
> access 1 per 224.10.0.0 0.0.255.255
>
> Regional router:
>
> ip multicast-routing
>
> int lo0
> ip pim sparse-d
>
> int s0
> ip pim sparse-d
>
> int s1
> ip pim sparse-d
>
> State router:
>
> ip multicast-routing
>
> int lo0
> ip pim sparse-d
>
> int s1
> ip pim sparse-d
>
> int e0
> ip pim sparse-d
>
> Problem:
>
> 1. At State router, I cannot see the Auto-RP and the Mapping Agent
> 2. I can't ping 224.10.10.1 but I can ping it from the Regional router
>
> Can you guys help me to find out the problem? My IOS is 12.1c and maybe
> that is the problem. This suppose should be a very straight forward
> configuration.
>
> Thanks.
>
> Best regards,
>
> William
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