"Green" Technology

[5mall5nail5]

Hey all - so, I picked up a couple TrendNet S80g switches (8 port, metal housing, "Green" switches) for simple in-home use because I had picked them up at work for benchtop units for guys to use at a bench setup. Well, I was having an issue with the "green" part - they apparently turn the ports off when no connection is detected at the switch. Problem is, I had a ~100 ft run of CAT6 cabling connecting two of these switches (cascading) and neither port would turn on! It seems the "green" part of the switch being power conscious (which seems like a waste of time based on my reading of savings...) is keeping the switch from turning on the port as I guess sometimes the switch-to-switch connection doesn't trip the presence.

Anyone have this issue? Rebooting switches seems to have remedied the issue, but interested to see if people have had this issue. I went to MicroCenter only to realize that decent NetGear/etc. switches are ALL "green" as well - port on/off technology. Hm.

 

[tipstir]

Hey all - so, I picked up a couple TrendNet S80g switches (8 port, metal housing, "Green" switches) for simple in-home use because I had picked them up at work for benchtop units for guys to use at a bench setup. Well, I was having an issue with the "green" part - they apparently turn the ports off when no connection is detected at the switch. Problem is, I had a ~100 ft run of CAT6 cabling connecting two of these switches (cascading) and neither port would turn on! It seems the "green" part of the switch being power conscious (which seems like a waste of time based on my reading of savings...) is keeping the switch from turning on the port as I guess sometimes the switch-to-switch connection doesn't trip the presence.

Anyone have this issue? Rebooting switches seems to have remedied the issue, but interested to see if people have had this issue. I went to MicroCenter only to realize that decent NetGear/etc. switches are ALL "green" as well - port on/off technology. Hm.

Yeah they can do that. I had to put one of the gigabit back in service for now as an option, until I can run network drops to each room where I need to use them with jack in each room.

Green switches save power. Trendnet ones are auto sensing ports. I have 16-port Gigabit and 24-port Megabit. Temporary on the 16-port in far distant room.

Does yours run hot?

 

[azazel1024]

Hmm, I've never actually seen that happen. I suppose you could try booting both at once for them to sense each others ports as active and not shut down. Or possibly just rebooting one would do it while they are connected.

I can't say I've had a scenario where I connected a "green" switch to another one, where both were on at the same time already.

At least in past experience I've connected the switches while at least one was off at first, powered the other on and everything was working fine.

That is with a mix of TP-Link and Trendnet both 5, 8 and 16 port switches (the former two dumb switches, the later an L2 switch).