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Protection from mulicast traffic.

PC developers use 'Ghost' imaging software on our network. It has an option to create multiple images at once using multicast techniques.

When running this software the utilsation on our Cat6000 MSM routing modules goes very high - up to 99% and they start to drop user packets. It looks like the multicast traffic is causing havoc for the routers, even though they are not configured to process it.

Is there any configuration I can place on our routers (with the exception of access lists) which would avoid this very high utilisation ?

  • Other Network Infrastructure Subjects
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Re: Protection from mulicast traffic.

This is due to Ghost client extended TTL search for Ghost servers. In your case, because of both Ghost server and clients are on the same network, Ghost server will send the image data with TTL=1 by default which causes the packet processing by CAT6000 MSM CPU. One SOLUTION is configuring higher TTL value for Ghost, and you can get more information how to configure from Ghost manual.

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