Hi Paul,
There is no IGMP enabled for VLAN 2101, so I believe you are receiving a broadcast traffic (not pure broadcast, but multicast traffic is treated in the same manner) for this VLAN rather than multicast. IGMP is disabled by default for this switch model (operates at the VLAN context level) and the switch simply floods all IP multicast traffic it receives on VLAN 2101 through all ports on that VLAN.
You have pim-dense mode. Why did you configure rendezvous point for PIM? There are no shared trees in DM and shortest-path trees are built - multicast traffic is flooded and then pruned back where no receivers are present.
Can you please give us more information about both the source and the receiver you are testing with (receiver in VLAN 100) – IP addresses, ports used, multicast IP address etc.? How did you test the multicast for VLAN 100 and what were the results?
The following outputs will be helpful as well:
show ip igmp vlan 100
show ip igmp config
show ip igmp groups
show ip pim interface
show ip mroute
show ip mroute [multicast-ip-addr source-ip-addr]
Here a few sources of information for similar configurations:
https://support.hpe.com/hpesc/public/docDisplay?docId=c03361122&docLocale=en_US
https://community.arubanetworks.com/blogs/esupport1/2020/04/27/arubaos-switch-how-to-configure-pim-dense-mode-multicast-routing-on-two-switches
16.10 Multicast Guide for the 2930 Switch:
https://support.hpe.com/hpesc/public/docDisplay?docLocale=en_US&docId=a00091308en_us
Regards
Stanislav
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Stanislav Naydenov
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Original Message:
Sent: Jun 02, 2021 11:38 AM
From: paul Lawrence
Subject: Multicast accross Vlans on one switch
HI,
I contacted HP support who said they will get back to me but in the mean time suggested joining this group.
I have a Aruba 2930 switch on this switch currently I have muticast traffic entering on port 23. I can recieve this traffic if I plug into another port that is in the same vlan 2101 (port 12).
However i want to also be able to receive the multicast traffic on vlan 100 (ports 1 - 11) can any one have a look at my latest attempt below and make any suggestions
Thank you
Paul
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Paul Lawrence
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