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Enable multicast on a subnet (HP 5900)

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fab2
Occasional Advisor

Enable multicast on a subnet (HP 5900)

Hi,

my customer tells me that some servers will communicate together with multicast, and asks if the network has "multicast enabled".

The think is, the servers are on a same vlan and subnet. I found out that in general, layer-2 switchs forward the multicast frames out of all ports on the VLAN (except the one it was received on).

Does HPE 5900 behaves this way ? There is no configuration to "enable multicast" on this vlan ? Can anyone confirm that ?

 

I also understood that if I want to avoid flooding I can enable igmp-snooping (to forward packets to the concerned ports port), but this is not required to have multicast passing through. Is that correct ?

It would be something like that:

vlan 11

 igmp-snooping enable

 igmp-snooping drop-unknown

 igmp-snooping version 2

 

Thanks!

Fabien

1 REPLY
sdide
Respected Contributor
Solution

Re: Enable multicast on a subnet (HP 5900)

Hi,

yes the switch will broadcast the multicast traffic if IGMP-snooping is not enabled.

You can enable IGMP-snooping:

example:

igmp-snooping
 enable vlan <vlan-list>
 quit

Regards

 

Søren Dideriksen, Network Administrator
Region Midtjylland