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more than single stream comming on multicast

sanjoy2006
Level 1
Level 1

Can anybody explain why I am getting so many multicast stream in a single igmp group .

4 Replies 4

Harold Ritter
Cisco Employee
Cisco Employee

In Any Source Multicast (ASM) mode, a receiver for a given multicast group will receive all streams from any source sending to that multicast group.

If this is not the behavior you want, you need to look at Source Specific Multicast (SSM), where the receiver not only the multicast group that it wants to join but also the specific source. This requires the receiver to support IGMPv3.

Regards,

Harold Ritter
Sr Technical Leader
CCIE 4168 (R&S, SP)
harold@cisco.com
México móvil: +52 1 55 8312 4915
Cisco México
Paseo de la Reforma 222
Piso 19
Cuauhtémoc, Juárez
Ciudad de México, 06600
México

Hi,

Thanks for reply .

Can we make it Source specific through putting "ip igmp static grooup and source" command on interface

You certainly can if the receiver doesn't support IGMPv3.

Regards,

Harold Ritter
Sr Technical Leader
CCIE 4168 (R&S, SP)
harold@cisco.com
México móvil: +52 1 55 8312 4915
Cisco México
Paseo de la Reforma 222
Piso 19
Cuauhtémoc, Juárez
Ciudad de México, 06600
México

Thanks,

I will rate after testing ,just kidding.

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