does 1GB/s & 100MB/s ethernet on same segment shared work???

C

callagga

New Member
Hi,

Background - I currently have a home network that is pretty much all 100MB/s ethernet.

Question - If I buy a 1GB/s switch (for downstairs) and have 2 of my devices that have 1GB/s network support physically into this switch, can I assume they'll be able to communicate based on 1GB/s ethernet? i.e. even whilst other upstairs devices are only 100MB/s connected to the upstairs 100MB/s switch. In other words I'm checking whether a specific subnet can be running traffic at two rates over it. i.e. so if there were a constraint whether I would need to use a router to create a 100MB/s subnet & a 1GB/s subnet separately, or a v-lan or something??

So config would be roughly:
- router
...switch 1GB/s
......2 x devices with 1GB/s ethernet
...switch 100GB/s (switches connected together)
......rest of home devices

Also there's no special cable for 1GB/s ethernet is there?

thanks
 
You'll only experience gigabit transfer speeds between the two computers that have gigabit nics in them. Now what you will gain is support for serveral concurrent 100 megabit connections to the devices that have gigabit nics without dropping the speed. If everything were 100 megabit and you were copying files from one computer on two seperate computers each would only go at about half their potential speed. With this configuration both pc's would be getting 100megabit because the backbone is a gigabit. Does that help you at all?
 
I think so - you first sentence is confirming to me if I just have 2 x 1GB/s capability on my network those two device together can still have the benefit, even if there are simultaneous 100MB/s connections from the same devices to older devices on the network. (with the assumption all devices only have 1 NIC card)
 
two that do 1GB, the rest perhaps not - just want them to all still be able to communicate on the same LAN segment - apparently having 100M & 1GB traffic simultaneously is ok
 
To answer you question, yes you can archive 1gb if all your hardware and Network Cable (Cat5e recommended) is 1gb capable, but remember the more you max out the 1gb limits on the 2 devices you mentioned, the slower the other devices on the Network will become, saying that unless your doing some massive data transfers your unlikely to archive 1gb.

Encryptor
Linux rocks the planet...
 
callagga said:
two that do 1GB, the rest perhaps not - just want them to all still be able to communicate on the same LAN segment - apparently having 100M & 1GB traffic simultaneously is ok
Click to expand...

Are they massive RAID arrays? Or RAM disks? I thought the fastest consumer hard drives are still below 150MB/s.
 
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