Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. And see here for current known issues.

New Member

igmp / pim - multicast

Hi All, what are the major components of setting up multicast, do I use igmp or pim ? or both ?

and what do I need in my network, also how do I route multicast ?

1 REPLY
Silver

Re: igmp / pim - multicast

hi!

For a multicast network, you need both Igmp as well as a multicast routing protocol ( PIM/DVMRP etc.)

The routing protocol works between the routers to send the multicast stream from the source router to the end router. This is the work of PIM ( note that PIM requires any unicast igp for its working).

Igmp comes into play for the leafs where it actually conducts the information of the host's intntions to join a multicast stream to the end router.

So in summary, PIM works in the core while igmp at the leafs.

The following link will give you more details on the matter :

www.cisco.com/en/US/docs/switches/lan/catalyst4500/12.1/19ew/configuration/guide/mcastmls.pdf

Cheers!

Niranjan.

105
Views
0
Helpful
1
Replies
CreatePlease login to create content