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Multicast/Broadcast Good or Bad

Posted on 2009-04-01
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Last Modified: 2012-05-06
Is it good or bad to have Multicast packets coming from a workstation.  I am having some problems on my network and I am running Network Probe that shows a workstation and my exchange server almost triple the next in line for multicast/broadcast traffic.

Is this bad?
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Question by:Goofdru
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4 Comments
 
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Expert Comment

by:cosmicfox
ID: 24045282
Well multicast and broadcast are very different. when you start to get a lot or very lot then you will have a problem. most Microsoft app's broadcast you just need to make sure you don't end up with a broadcast storm. which is caused by plugging a switch back into it's self.
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Author Comment

by:Goofdru
ID: 24048718
OK so if overnight I had over 30,000 multicast/broadcast messages from my exchange server then there is probably sometihng wrong on it right?
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cosmicfox earned 1000 total points
ID: 24049960
Well is it a front end or backend/database server. we are running exchange 2007 and in a 3week period we have 11605989 broadcasts from our backend server. in order to find out what type of traffic it really is you could setup a network analyzer or packet sniffer such as wireshark. then you would find out what the traffic is without that knowledge it's hard to say what it could be. Mestha is a guru at exchange so I'm sure he knows all the traffic that flows from it. So if you are having problems with exchange post in the exchange board Mestha will most likely answer.
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Author Comment

by:Goofdru
ID: 24050163
It is a Front end server and we are running 2003.  I will check it out as well as use the wireshark.  I have heard of that program but haven't used it.  Thanks.
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