3750 & duplicate multicast flow

[palomacasimir]

Hi,

I have one 3750 with the SMI version and need to duplicate a Multicast flow twice without any routing feature. Is the SMI version sufficient ?

I have about 400 Mbps of incoming payload .

I already created a trunk with .1Q encapsulation.

Thx

[szahid]

You can have multicasting in a single vlan so long as you have an IGMP querier in the vlan. When you enable multicast routing and PIM on a vlan interface , the querier functionality becomes available , but since you have SMI switch and cannot run Mcast routing or PIM , you can just enable IGMP querier . IGMP querier feature is in SMI codes starting from 12.2(25)SEA

http://www.cisco.com/univercd/cc/td/doc/product/lan/cat3750/12225sea/3750scg/swigmp.htm#wp1187873

And as long as your end host supports IGMP , this config should work . If they do not support IGMP , you may have to add manual entries to enable the multicast flow forwarding.

thanks

Salman Z.

[palomacasimir]

Thx for your reply

In fact, just before the 3750 i have a product generating Multicast flow (with a Vlan tag - up to 100 IP Multicast so 1 IP = 1 vlan_id).

For the configuration, i only created a trunk (with .1Q encapsulation) on the Giga incoming & on both Giga outputs and added extended vlan range. It's a really simple application to duplicate 2 flows.

Therefore, i understood the configuration should be working with the SMI

By default, IGMP querier is enabled ?

Thx again

Best regards,

[szahid]

IGMP querier is not enabled by default.

thanks

Salman Z.

[palomacasimir]

Just to be sure with my configuration. Could you confirm me if it will be working with SMI ?

I have attached a file with the configuration.

Of course, i did not enter the vlan because the device before the 3750, already create the vlan

Thx

Have a nice day