enable IGMP snooping for KVM

[robertkwild]

hi all,

we have issues with our kvm atm, there losing/dropping/blurry/black signals from the transmitter to the reciever kvms

one of the kvm support tech said you may need to enable IGMP snopping, do i need to enable IGMP snooping even tho all the kvm gear lies on the same vlan?

also all the kvm transmitter and recievers are scattered accross different switches, there all cisco SG or cisco nexus

thanks,

rob

[robertkwild]

so to enable igmp snooping on vlans, do i need to enable it globally first?

https://www.cisco.com/c/en/us/support/docs/smb/switches/cisco-350x-series-stackable-managed-switches/smb5814-configure-igmp-switch-cli.html

as i have already vlan interfaces, to set multicast, its here

https://www.cisco.com/c/en/us/support/docs/smb/switches/cisco-small-business-300-series-managed-switches/smb5761-configure-multicast-properties-on-a-switch-through-the-cli.pdf

are there any side affects enabling globally igmp snooping on the switches

[robertkwild]

so i have the jist of the commands to type

multicast

bridge multicast filtering
int vlan 7
bridge multicast mode ipv4-group

igmp

ip igmp snooping
ip igmp snooping querier
ip igmp snooping vlan 7
ip igmp snooping vlan 7 mrouter learn pim-dvmrp
ip igmp snooping vlan 7 immediate leave
int vlan 7
ip igmp last-member-query-count 3
exit
ip igmp snooping vlan 7 querier
ip igmp snooping vlan 7 querier election
ip igmp snooping vlan 7 querier version 2 OR 3
ip igmp snooping vlan 7 querier 192.168.200.56

but what if i dont want to put down a querier address, will igmp work if i dont put down a querier address?

[Georg Pauwen]

Hello, 

enabling igmp snooping globally just means it is enabled for all Vlans.

The querier is optional, and only needed uf there is no multicast router in your network...

[robertkwild]

can the querier ip address be the VLAN interface ip ie

0.0.0.0/32 vlan 1 UP/UP DHCP disable No enable Not
receiv
ed
10.110.250.14/24 vlan 250 UP/UP Static disable No enable Valid
192.168.200.250/24 vlan 7 UP/UP Static disable No enable Valid

so can the querier address be the vlan 7 int ip ie - 192.168.200.250/24