multicast - ip igmp join group

From: Hafizur Rahman \(UK\) (hafizur.rahman@uk.didata.com)
Date: Fri Sep 08 2006 - 09:12:49 ART


Hello
  
I am trying to understand how Ping response to an ip igmp
joing-group
multicast group works. I have got following setup
  
     R1
- FR hub -- Ip pim send rp announce loop0 --- ip pim
send-rp-discove
loop0
  
  
R2 R3 -- E0 -- ip pim spares-mode
Ip add 200.20.10.1
                                    Ip igmp join group
227.1.1.1
  
  
R1 is FR hub and R2 and R3 are spoke. R1 is RP and also
mapping agent.

  
My question is in order for R1 and R2 to ping this M G
227.1.1.1 , do
they need to have L3 reach ability to the int e0 unicast ip
address
200.20.10.1
  
In my lab it works with or with out L3 reach
ability to add 200.20.10.1
  
If R2 do not know how to reach 200.20.10.1
then how can it ping this MG
227.1.1.1
  
Any idea.
  
Your help will
be highly appreciated
  
Thanks
  
Hafi
  
  
  Sheikh Rahman
Support Engineer
Dimension Data United Kingdom
Dimension Data House
Building 2 , Waterfront Business Park
Hampshire GU51 3QT
+44 12 5277 9330
Office
+44 12 5277 9010 Fax
hafizur.rahman@uk.didata.com

For further
information about Dimension Data, please go to
www.dimensiondata.com
-----------------------------------------
Dimension Data - providing global
IP based solutions and services
for over 20 years supported locally from a
single point of contact

This email is confidential. If you are not the
intended recipient
then you must not copy it, forward it, use it for any
purpose, or
disclose it to another person.

Please also note that the
author of this email is not authorised
to; make any offers capable of
acceptance unless expressly stated
in a validly dated and attached document
which shall be subject to
the terms and conditions stated therein or,
conclude any contract
on behalf of Dimension Data by email.

Although
Dimension Data has taken reasonable precautions to ensure
no viruses are
present in this email, the company cannot accept
responsibility for any loss
or damage arising from the use of this
email or attachments.



This archive was generated by hypermail 2.1.4 : Sun Oct 01 2006 - 16:55:40 ART