M4300-28G-PoE+ & Tivo

Hi Jon

Thank you for your message and congratulations, M4300 series is NETGEAR top of the line and a great upgrade from M4100 series.

Yes, all M4300 switches come with Layer 2 Multicast pre-configured (IGMP Snooping, Querier and Fast Leave enabled across entire VLAN 1) for convenient Video-over-IP deployments. As a founding member of the SDVoE Alliance, NETGEAR provides the backbone network that makes it all possible.

If your Tivo installation was working fine on a previous M4100 switch, we need to check two things:

1. Is the IGMP configuration the problem?
2. Was there any other required configuration on the M4100? 

The Community can help you figure out. We should start with 1/ and "un-do" the L2 Multicast configuration in this order:

• Using the Web GUI for instance, Switching \ IGMP Snooping \ Querier VLAN Configuration: delete the line "VLAN ID 1 - Querier Mode Enable - Querier VLAN Address 0.0.0.0"
• Switching \ IGMP Snooping \ Querier Configuration: set "Disable" for "Querier Admin Mode"
• Switching \ IGMP Snooping \ IGMP VLAN Configuration: delete the line "VLAN ID 1 - Admin Mode Enable - Fast Leave Admin Mode Enable"
• Switching \ IGMP Snooping \ Configuration: set "Disable" for "Admin Mode" and for "Validate IGMP IP header" 
• Maintenance \ Save Config: check the box "Saving all applied changes" and click APPLY on the bottom right 

Please let us know how it goes after this, as a first step. Thank you!

Regards,