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Enabling Multicast Routing

Posted on 2013-06-12
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Last Modified: 2013-06-30
Hi I enabled this on out core Cisco 3750 Router.

Someone mentioned that a script overnight ran faster. How can I explain that this was NOT the result of enabling multicast. Am I right in saying only certain traffic types use multicast.

Its a Unix script. - Would it use multicast.?
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Question by:philb19
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Rick_O_Shay earned 1500 total points
ID: 39244287
Multicast could be used by almost anything but it only makes sense if there are many stations receiving the same output from a single source, like streaming video etc.

Is the script doing anything like downloading patches to many devices at the same time? That would most likely run faster with multicast.
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by:philb19
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Yes however would not the receiver need to be receptive to mutlicast? - Its not sccm its not downloading patches. Its not streaming video. Unfortunately I don't know that side of the system. it does communicate with several servers. - It was only quicker the 2nd night after i turned it on. - and now its back to normal speed with multicast still on in the core.

I understand a multicast frame goes to all in LAN. - I understood it to be for specific applications (video stream) - and sender would need to specify muticast IP (group)(cluster) to send to. - ie the app  would need to be setup to send multicast

I guess Im asking by just turning it on in the Core Cisco router - should general traffic suddenly improve?
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