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New Member

IP Multicast Question

Hi,

I am going to do a testing for IP multicast, but I want to make sure that my theory is right.

Sender is sending a huge multicast traffic to receiver on the same VLAN. The packet size is around 6000 MB. The sender and receivers are on different switches connected with 1GB trunk.

If I enable IGMP Snooping on all the switches that have that specific vlan, I am assuming that this should not be a problem.

My concern is, the multicast packet is so much bigger than the trunk bandwidth can handle, would that be a problem? If this is a problem, will upgrading the hardware to 720gb backplane and Sup2 solve the problem?

All the switches are C6509 with Sup1a and 32gb backplane currently.

Thanks.

  • Other Network Infrastructure Subjects
2 REPLIES
Bronze

Re: IP Multicast Question

hi,

How is it possible to have a packet size of 6Gb ?

Is the frame size 6000 bytes , i.e. a jumbo frame ?

New Member

Re: IP Multicast Question

Hi,

I know it sounds unbelievable. The user is sending 1000 messages and each message is 6mb in size. He is using IP in the range of 224.168.0.1 - 224.168.0.254. I think this is a non-reserved IP range and should not cause any problem. I will try to move this range to the 239.168.0.0 range in the future.

What I really want to know is, if the multicast traffic is bigger than what the trunk link can handle, will enable multicast and igmp be useful.

Thanks.

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