TL;DR Can I connect a gigabit switch to the NVG589 without flooding all LAN ports with multicast IPTV traffic so long as I do not connect any set top boxes to said switch?
Hi, I recently got Uverse for internet and TV and got the NVG589 gateway. I was initially planning to use my existing DLink DIR-655 router in bridge mode but the AT&T gateway seems good enough. However, I do have a need for more gigabit Ethernet ports in my office. I have the RG next to the DVR with a setup like this
NVG589--LAN1-->DVR
--LAN2-->Wireless adapter for wireless STB
--LAN3-->Playstation 3
--LAN4-->75' Cat5e to desktop PC.
I could use more Ethernet ports at the TV for the other consoles and such but for now wireless will do. What I am wanting to do now though is this:
NVG589--LAN1-->DVR
--LAN2-->Wireless adapter for wireless STB
--LAN3-->Playstation 3
--LAN4-->75' Cat5e to Dlink DIR-655 (for use as a switch, not doing any routing and with Wi-Fi off)
NVG589--LAN1-->DVR
--LAN2-->Wireless adapter for wireless STB
--LAN3-->Playstation 3
--LAN4-->Dlink DIR-655--|--LAN1-->Desktop PC
...................................|--LAN2-->Test Machine
...................................|--LAN3-->Test Machine
...................................|--LAN4-->Available
My concern is from lurking on these forms people have mentioned that the IPTV traffic can flood the LAN ports of downstream switches if they do not support IGMPv3 snooping. However, if I'm understanding those threads correctly, the NVG589 /should/ keep the IPTV traffic off of it's LAN4 since I do not have any set top boxes connected anywhere downstream of that port, right?
Thanks for any insight, I'm used to Comcast where I had my own equipment for everything and did not have a gateway device to work around.
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