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Sep 13, 2018

Solved

M4300 IGMP snooping

Hello, i have problems with configuring IGMP Snooping on my Netgear M4300 switch. Heres a link with pictures of my current configuration: https://imgur.com/a/N3UaYIK All devices ar...

Installation

Troubleshooting

VistaICT
Oct 03, 2018
Hi All,

We have worked out the issue with Netgear Support. Turns out the Bonjour service is disrupting MDNS between the TX and RX.

Disabling the bonjour service fixed it.

VistaICT

Star

Oct 01, 2018

Here's some PCAPs using different firmware 12.0.4.9 and 12.0.7.7: https://ufile.io/vwnha (can't upload them here)

This was done on a stack of M4300-52G-POE switches and includes a TechSupport dump

The switches are always in factory configuration

I have also tested firmware 12.0.7.8 today and the problem still exists.

You'll notice in the 12.0.7.7 the receiver is sending MDNS queries to 224.0.0.251 but never sees a response. In 12.0.4.9 the response is seen followed by a peer-to-peer TCP negotiation of metadata/keys and then video traffic starts flowing.

169.254.3.3 is the transmitter

169.254.6.7 is the receiver

225.0.100.3 is the multicast group the transmitter is sending traffic to and the receiver is trying to join

VistaICT

Star

Oct 03, 2018

Hi All,

We have worked out the issue with Netgear Support. Turns out the Bonjour service is disrupting MDNS between the TX and RX.

Disabling the bonjour service fixed it.

LaurentMa
NETGEAR Expert
Oct 03, 2018
Hi VistaICT

Thank you for confirming the resolution of your issue.

For others in the Community, here are the explanations for disabling Bonjour, in case of a conflict between IGMP and mDNS packets.

Using the Web GUI:

Disable Bonjour on M4300

Navigate to System > Management > Bonjour > Bonjour Configuration.

Set Admin Mode to Disable.

Click the blue Apply button.

Using the M4300 CLI:

User:admin
Password:
(M4300-switch) >en

(M4300-switch) #configure
(M4300-switch) #no bonjour run
exit

Regards,