This blog was originally started to better help me understand the technologies in the CCIE R&S blueprint; after completing the R&S track I have decided to transition the blog into a technology blog.

CCIE #29033

This blog will continue to include questions, troubleshooting scenarios, and references to existing and new technologies but will grow to include a variety of different platforms and technologies. Currently I have created over 185 questions/answers in regards to the CCIE R&S track!! Note: answers are in the comment field or within "Read More" section.

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Saturday, April 24, 2010

Question 16

What protocol can you use instead of using IGMP Snooping?

1 comments:

Packets Analyzed said...

IGMP Snooping - Internet Group Management Protocol is used by switches to intercept IGMP request from hosts to prevent a switch from flooding the broadcast domain with multicast traffic.

CGMP - Cisco Group Management Protocol is a Cisco proprietary protocol by routers to inform switches that a host would like to join a multicast group. This allows a switch to send the multicast traffic to only the hosts requesting the traffic. This also prevents a switch from flooding the broadcast domain with multicast traffic. CGMP must be enabled on the router and switch.

IGMP Snooping (Switch)

Global Config
"ip igmp snooping" or "ip igmp snooping vlan (vlan-id)"

CGMP (Router and Switch)
Interface Config
PIM must be enabled on the interface
"ip cgmp"

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