[c-nsp] IP multicast traffic overwhelms switches

[victor]

On Fri, 10 Jul 2009 21:04:21 +0400, Antonio Querubin <tony at lava.net> wrote:

> On Fri, 10 Jul 2009, victor wrote:
>
>> udp multicact mode to stress-test both even more the cpu utilization on  
>> C7604 became 60% and on C4924 hit 100%. It even became visible as the  
>> responses of the telnet console considerable slowed down.
>> Both switches work as ip multicast routers in sparse-dense mode. The RP  
>> is C7604. Apparently all the multicast traffic gets process switched,  
>> though
>
> Use sparse mode instead of sparse-dense.
What is your point here? Please, explain. Sparse-dense mode acts as dense  
only when RP is unavailable.
> Have you enabled either IGMP snooping or CGMP between the routers and  
> the switches?
Sure I have. IGMP was on by default. Video traffic from IPTV server is  
received by end users with no questions.


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