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Attention: The Cisco Support Community site will be in read only mode on Dec14, 2017 from 12:01am PST to 11:30am for standard maintenance. Sorry for the inconvenience.

New Member

multicasting

this is where 1 stream is sent and multiple people listen ? am i right, are routers etc all setup by default to allow this ? what else is multicast used for ?

thanks

4 REPLIES
New Member

Re: multicasting

Multicasting is wel used to send one or several streams to a group of devices interested in these streams without duplicating the packets when it is not necessary. The router does not route multicast by default, you need to enable it.

Check this doc for more information about multicast : http://www.cisco.com/application/pdf/en/us/guest/products/ps6552/c1161/cdccont_0900aecd80310883.pdf

Please rate if this helps.

Regards,

Christophe

New Member

Re: multicasting

Do many people use multicast, are all the routers that route the internet multicast ?

Re: multicasting

Hi,

Most Internet multicast usage up to now has been largely academic (and large corporate) - however, with the advent of Internet TV/radio it's slowly taking off for the general public, for example, in the UK the BBC have been trialing multicast with some ISP's.

Have a look at:

http://www.bbc.co.uk/multicast/

So, to answer your question, some people are using it but not all Internet routers currently support it.

HTH - plz rate if it does.

Andrew.

New Member

Re: multicasting

Some ISP are multicast enabled. If you want to check if your ISP is multicast enabled, you can use this web page : http://www.multicasttech.com/mt/

However, if your are on an enterprise network, multicast must be enabled on it too.

Please rate all posts.

Christophe

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