Multicast routing

[marika82_A]

Hello,I'm confused about multicast configuration in my router.Is there somebody with experiences in multicast configuration and implementation?I read many materials about it but all are teorical concepts without any practical examples.Please help me!Thanks

[Georg Pauwen]

Hello,

although there are quite a few flavors of implementing multicast, the easiest way to get started is to configure your router as following:

Router#conf t

Router(config)#ip multicast-routing

Router(config)#interface FastEthernet0/1

Router(config-if)#ip pim dense-mode

Router(config-if)#exit

Router(config)#interface Serial0/0

Router(config-if)#ip pim dense-mode

This configuration would allow clients connected to both interfaces to exchange multicast traffic.

Basically, you can configure two modes of multicast, sparse and dense. Dense mode is more resource intensive.

Check this link for more configuration examples:

IP Multicast

Configuration Examples and TechNotes

http://www.cisco.com/en/US/tech/tk828/tech_configuration_examples_list.html

Let me know if you need more help, as I said, multicasting can get quite complex...

Regards,

GP

[marika82_A]

Hi,thanks for your help.

I'm cheking the link I hope that I will understand multicast better!!!:-(

Can I ask you some questions?

I now describe you my network design (that you can look in the attachement):I have one cisco router 2620 that has one Ethernet interface and one serial inteface that I cannot use for others reasons.So I have implemented 3 subinterfaces on fa 0/0.In this way do you think multicast implementation became more difficult?

The router is connected to a switch catalyst 2959 in which I have configured 4 vlan.(as you can see in the attachemnt).

Another question is :how can I assign host to a multicast group?and how can hosts join or leave a group?I know that igmp protocol does it but it's dynamic or I must say in static manner who joins to the group or leaves it?

Do you have exsperiences whith multicast?

Thank a lot!

[marika82_A]

Hi,thanks a lot.I today begin with multicast...I believe that I will have some problem with implementation.Can you help me?

If for you my request is not a problem I could contact you via mail. So if you are agree send me a mail with your mail address for your discretion.My mail address is marika82_A@libero.it.I hope in your help because in my university nobody follows me and nobody helps me for solve my problems:-(.

Sorry if I'm probably very insistent with you :-D.

P.S. ah my name is Marika.thanks for all