From: Krucker, Louis (louis.krucker@xxxxxxxxxxx)
Date: Tue Aug 06 2002 - 16:58:38 GMT-3
Hello Kym
I found it out why i can't reach the multicast source on R2.
The reason is, there is no source which can answer my ping requests
because its no pc with a multicast software attached to my router.
At the end we now the config is ok.....
regards
Louis
-----Original Message-----
From: kym blair
To: Krucker, Louis
Sent: 06.08.2002 21:02
Subject: RE: Multicast problem
Louis,
Don't trust my answer because I've only read about multicast, not tried
configuring it. But I have two ideas why your config doesn't work:
(1) R1 mapping agent statement, I think you should leave out "loopback
0":
ip pim send-rp-discovery scope 10
(2) But the important reason you can't receive multicast traffic on R4
is
that you don't have multicast listeners on R4 so it has been pruned. I
think you can add listeners in two ways: attach a client that has
multicast
software and thus sends igmp joins, or add the ip igmp join-group
statement
to R4 E0 so the router joins the group.
ALTERNATE SUGGESTION: Perhaps you might want to do static RP instead of
auto-RP until you get it working. Just remove the send-rp-discovery and
and
send-rp-announce statements (to remove auto-rp), then on R4 add
rp-address
statement.
Please let me know your final solutions. I want to learn this too.
Thanks,
Kym
>From: "Krucker, Louis" <louis.krucker@sunrise.net>
>Reply-To: "Krucker, Louis" <louis.krucker@sunrise.net>
>To: "'ccielab@groupstudy.com'" <ccielab@groupstudy.com>
>Subject: RE: Multicast problem
>Date: Tue, 6 Aug 2002 20:22:03 +0200
>
>sorry i mistiped one word
>
>On R2 i use ip igmp join-group 240.0.0.1
> ip igmp join-group 241.0.0.2
>on the ethernet and "ip pim send-rp-announce Loopback0 scope 10"
>to announce the rp to the cloud.
>
>
>I have some add on, if i type show ip pim rp on R4 i see the rp for
those
>groups but i cant ping.
>
>cheers
>Louis
>
>
>
>
>-----Original Message-----
>From: Krucker, Louis
>To: 'ccielab@groupstudy.com'
>Sent: 06.08.2002 19:46
>Subject: Multicast problem
>
>Hi folks
>
>I play around with a simple multicast lab and run in some troubles
>
>|-R2-------------R1---------------R4--|
>
>R2 is the multicast source, R1 is the mapping agent and R4 is connected
>to multicast receivers. I use sparse-dense mode on all interfaces, R2
is
>the
>RP.
>
>My idea was to simulate two multicast groups on R2 which i can ping
from
>
>R4 to test it.
>
>On R2 i use ip igmp join-group 240.0.0.1
> ip igmp join-group 241.0.0.2
>and on the ethernet "ip pim send-rp-announce Loopback0 scope 10"
>to announce the rp to the cloud.
>
>On R1 i have configure ip pim send-rp-discovery lo 0 scope 10 to
>set up a mapping agent. On R4 i configured only multicast-routing and
>sparse-dense mode on the interfaces which route multicast.
>
>The problem I can ping those groups from the MA but not from R4, does
>somebody know where is the mistake ? IP routing is OK because i can
ping
>
>from R4 the ethernet interface where thos two sourced are connected.
>
>Thanks for help
>
>Louis
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