brushhead1971
asked on
3Com SuperStack 4400 IGMP snooping settings
Hi,
I have got hold of a 3 Com 4400 48 port Managed Switch. I am trying to multicast stream Video and Radio from a DVB-s onto my local network. I can stream this onto my Network without a problem apart from the fact that it takes down my router and VOIP phones because they do not like the Multicast traffic.
I got this switch in order to filter out these Multicast stuff, except to those which had registered as a Multicast subscriber.
What I really need help with is how to set the Switch up as to filter out Multicast.
Can anyone help please?
Thanks,
Rob.
I have got hold of a 3 Com 4400 48 port Managed Switch. I am trying to multicast stream Video and Radio from a DVB-s onto my local network. I can stream this onto my Network without a problem apart from the fact that it takes down my router and VOIP phones because they do not like the Multicast traffic.
I got this switch in order to filter out these Multicast stuff, except to those which had registered as a Multicast subscriber.
What I really need help with is how to set the Switch up as to filter out Multicast.
Can anyone help please?
Thanks,
Rob.
ASKER
Hi,
Snooping appears to be turned on. Am I understand Snooping properly because I am still seeing this Multicast all over my network.
Regards,
Rob.
4400-cap.GIF
Snooping appears to be turned on. Am I understand Snooping properly because I am still seeing this Multicast all over my network.
Regards,
Rob.
4400-cap.GIF
What multicast specifically are you seeing? What IP?
ASKER
Hi,
I am beginning to think that I have another switch on the network that seems to be causing the network to fall over, or rather one specific bit. I will do some more testing and report back. I thought that the opint of IGMP snooping was to stop unnecessary traffic from apperaing, ie, to tpoint that had not registered as being part of the Multicast group.
Rob.
I am beginning to think that I have another switch on the network that seems to be causing the network to fall over, or rather one specific bit. I will do some more testing and report back. I thought that the opint of IGMP snooping was to stop unnecessary traffic from apperaing, ie, to tpoint that had not registered as being part of the Multicast group.
Rob.
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ASKER
Hi,
Thanks kdearing, you gave me enough to start a new thought thread. I did some Googling onn Multicast addresses, and you were right to ask what address I was using. I was passing everything onto nttwork as 224.0.0.1, 224.0.0.2 and so on. I had not appreciated that this would be ignored by the Switch, because it is intended to flod the network.
I am now using 239.0.01 etc etc and the switch now blocks Multicast traffic as I had imagined it would.
Thanks a lot.
Thanks kdearing, you gave me enough to start a new thought thread. I did some Googling onn Multicast addresses, and you were right to ask what address I was using. I was passing everything onto nttwork as 224.0.0.1, 224.0.0.2 and so on. I had not appreciated that this would be ignored by the Switch, because it is intended to flod the network.
I am now using 239.0.01 etc etc and the switch now blocks Multicast traffic as I had imagined it would.
Thanks a lot.
You can enable or disable IGMP Snooping for all Switch units in the stack using the IGMP command on the Multicast Filtering menu.
To enable or disable IGMP Snooping:
At the Top-level menu, enter:
bridge multicastFilter igmp snoopMode
The following prompt is displayed:
Enter new value (enable, disable) [enable]:
Enter enable or disable.