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stop multicast flooding in a vlan with no ip address

CrackedJack1
Level 1
Level 1

To keep machines isolated for testing, I have a few vlans defined that have no IP address on them to prevent anything from getting in/out. The machines in these vlans do not have a gateway set (I do have ip routing and ip multicast-routing enabled on the switch but I don't want any traffic from the vlan getting out unless I specifically put in a route)

Since the vlan has no ip address, when there is multicast traffic it ends up being broadcast in the given vlan to all machines.

The "normal" vlans have ip pim set on them.

For these isolated vlans, is there a way to set a querier address that only works within that vlan so as to prevent the flooding but still remain isolated?

Would something like this work for machines in an isolated vlan:

int vlan 300

ip igmp snooping querier 10.12.30.2 [an unused ip address in the range of the other machines]

I don't want to affect anything else, just stop the flooding in this vlan.

Thanks

16 Replies 16

Hello

The stats your are seeing - Are these just the general membership queries igmp sends out.

Res
Paul

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Paul

The stats your are seeing - Are these just the general membership queries igmp sends out.

Real traffic. I was generating traffic on on port 29 and port 30 was getting flooded