Multicast not working among clients Hyper V Cisco 3850

[ddirks]

I have 4 Ubuntu servers that need to communicate with each other via multicast.  3 of VM's using Hyper V that and the 4th is a separate physical box.  The 3 VM's see each other and not the physical box.  The physical server sees none.  All of them are on the same Vlan (vlan2) and can ping each other.  All of them are plugged into the the same switch.  The physical server that hosts the 3 vm's is on GI1/0/9 and the other server is on GI1/0/14.

ip multicast routing is enabled.  

Vlan2 is up, line protocol is up
Internet address is 192.168.2.252/24
IGMP is enabled on interface
Current IGMP host version is 2
Current IGMP router version is 2
IGMP query interval is 60 seconds
IGMP configured query interval is 60 seconds
IGMP querier timeout is 120 seconds
IGMP configured querier timeout is 120 seconds
IGMP max query response time is 10 seconds
Last member query count is 2
Last member query response interval is 1000 ms
Inbound IGMP access group is not set
IGMP activity: 4 joins, 0 leaves
Multicast routing is enabled on interface
Multicast TTL threshold is 0
Multicast designated router (DR) is 192.168.2.252 (this system)
IGMP querying router is 192.168.2.252 (this system)
Multicast groups joined by this system (number of users):
224.0.1.40(1)

I am stuck to why it is happening this way.  

[Georg Pauwen]

Hello,

if all you want is flood multicast packets within the same Vlan, you don;t need multicast routing and IGMP snooping, so disable both and check what the results are:

no ip multicast-routing

no ip igmp snooping vlan 2

[paul driver]

@Georg Pauwen  would suggest not to disable igmp snooping as without this MC will flood broadcast domain and incurr unwarranted network traffic and load to all the devices in that broadcast domain (vlan)

[Georg Pauwen]

The idea is to test what happens when there are no restrictions for multicast traffic within that Vlan, as I don't know how Hyper V processes multicast traffic...

[paul driver · Accepted solution]

Hello

Lan multicast on the same vlan and no pim router, suggest enable igmp snooping and and igmp snooping querier.

[ddirks]

Thanks for the advice, used a combination of all the posts.  Ended up using 

No ip multicast-routing 

and on vlan 2 - no ip igmp pim

I left snooping on.

All servers are seeing each other now.

Thank you