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Forum Discussion
Multicast issues with M4100-26G v2
Hi,
I am trying to implement multicast using IGMP snooping. I am using single switch and 2 systems (1 for multicast client and 1 for multicast server)I have following setup of switch:
In switching -> Multicast -> Bridge Multicast Forwarding selected filter unregistered.
In Switching -> Multicast -> Igmp Snooping enabled admin mode and configured "enabled " for both the interfaces where my systems are connected.
I am using native VLAN ID for this setup and in IGMP VLAN configuration I have enabled VLAN 1.
For Querier mode, enabled admin mode and same for Querier VLAN configuration selected VLAN ID 1...
I am sending multicast frames to port 14 and receiving from port 17. Multicast address is 239.1.1.1
Switch IP address is 192.168.1.23 and client IP address is 192.168.1.3 and server IP is 192.168.1.5
But I am not able to receive any packets after multicast join on the server side but I can see membership report for join and leave and no enteries in MFDB table..
I am attaching .pcap file of the capture.
Please help me finding solution to this..
7 Replies
Hi Rajita,
Welcome to the community! :)
Based from the image posted, v10.0.2.20 the current firmware version of the M4100-26Gv2. I suggest you to upgrade the firmware of the M4100-26Gv2 to the latest version which is v10.0.2.26. You can download it here. Then check if the same problem will occur.
Also, kindly post an image or screenshot of your detailed network setup.
Regards,
DaneA
NETGEAR Community Team
It does not change anything. Looks like the firmware issue.
Steps
1- Test Setup
LinuxPC1<--->NetgearSwitch<---->LinuxPC2
Both linux systems have IGMP V3 support
2- IGMP Configuration:(Querier disabled)
- Configure filter unregistered.
- Enable IGMP snooping and configure IGMP Vlan. Vlan is set to 1 in our case as we have non tagged multicast.
3- Send multicast from Linux PC1. On Linux PC2 sniffer is not showing multicast frames as expected. Send a join request from Linux PC2(its IGMPV3 request as checked on wireshark.) On linux PC2 sniffer starts showing packets and MFDB table has a entry. So far so good.
4- Now the problem: After some time(to be precise after Group member ship interval), sniffer on Linux PC2 is not showing any multicast frames. Verfified that LinuxPC1 is still sending frames. There is no entry in MFDB table now.
5- I configured querier now with IGMP V2. Thought this may solve the issue. Netgear has IGMP V1 and V2 support. Linux PCs auto learned the environment as verfied by sending join request again from LinuxPC2. No multicast frames were recieved on Linux PC2 as verfified from sniffer. No entry in MFDB table too. Sniffer is snowing the queries from Netgear and request being sent in reply from Linux PC.
So what is the problem here?
Hi, sorry for your issue. It must be a configuration issue with IGMP here.
Please make sure the IGMP Snooping, IGMP Querier(v2) and IGMP Fast Leave are properly configured at the VLAN level (not at the port / physical interface level). Can you follow the direction from this post (I indicated how to configure IGMP for VLAN 2, please replicate it in your case for VLAN 1): https://community.netgear.com/t5/Pro-AV-over-IP-Switches/M4300-configuration-as-AV-network-access-switch/m-p/1717479#M114
I know the other post in for M4300 and you have a M4100, but the menus are consistent in the GUI.
Please let us know.
I have attached my swicth configuration. Please let me know if you face any issue opening the same.My setup as I explained earlier is:
1- Ubuntu System having two interfaces. (192.168.0.1/16 and 192.168.1.43/24)
2- Netgear M4100-26G
3- Another Ubuntu System (192.168.1.37/24)
4- Interfaces of both ubuntu systems are connected to netgear switch. From 192.168.0.1/16 I have netgear web interface opened.
5-192.168.1.37 is sending IP multicast frames at group address 239.1.1.1.
6-192.168.1.43 is subscribing to 239.1.1.1 group by sending IGMP request.
Issues:
1- Join request with IGMP version 2 doesn't work.
2- I had to force igmp version 3 on 192.168.1.43. Only then I started recieving multicast frames on system 192.168.1.43 and can see the entry in MFDB table. In this case After 260 seconds netgear stops sending the frames.
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