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Enabling GigE on a network

mikeymikec

mikeymikec

Lifer
If I have the following setup:

Broadband router (and DHCP server)
GigE network switch
A number of PCs, all with GigE NICs

Despite the fact that the PCs are directly connected to the GigE switch (and the GigE switch is connected to the router), the PCs are still reporting a 100Mbit/sec network connection. Is this because the router is only 10/100 capable? The broadband is only capable of about 8Mbit/sec anyway, but it would be beneficial for internal network transfers to have a faster connection than 100Mbit/sec.
 
As long as the computers are connected to the switch and not to the router, then the router's speed doesn't matter. If you are not getting gigabit speeds with all gigabit equipment, then you might have a problem with your cables. Are they all at least CAT5e or CAT6?
 
Fardringle said:
As long as the computers are connected to the switch and not to the router, then the router's speed doesn't matter. If you are not getting gigabit speeds with all gigabit equipment, then you might have a problem with your cables. Are they all at least CAT5e or CAT6?
Click to expand...

I'm not sure, I'd have to check. It's certainly possible that one old cable is still in the mix somewhere.
 
What is the switch? How are you determining the PCs are 100 mbit? What are your cables rated at? Cat 5, 5e, or 6? Home nmade cables or pre-fab?

The link is negotiated between the switch and the PCs on an individual basis. It they're gigabit ready, and so is the switch, then they should be running at a gig.

edit: lol too slow cheez.
 
Check your cables, make sure they used all 4 pairs. If any of the patches or wall cables only use 2 pair then it will be at 100mbps.
 
mikeymikec said:
I checked the link speed in Network & Sharing Centre > Connection, as well as running a test by transferring a large file between two PCs.



WD Caviar Blacks, same age as the Core i7-2600K rigs they're in.
Click to expand...

Your disk drives makes no difference in this. What model switch doyou have? and check those cables.
 
mikeymikec said:
Switch: Netgear GS108T

It'll be a while before I get to check the cables as this set-up is on a customer's network.
Click to expand...

Easy test if you can, gig laptop with a good cable and plug directly in. If you get gig you eliminate the hardware. After that you have to go on a cable fishing adventure which sucks.
 
If you are falling back to 10/100 it's most likely an issue at the ethernet layer or lower. Even physical. I would test the cables to ensure you get conductivity on all 8 pins. Also, see if you can buy a factory made cat6 cable to test. I've had bad luck with home made/cheap cables for gigabit. I buy all cables from Monoprice now as they're so cheap.

Oh and it may not even be the cables but the actual runs. Test those too. Could be a wire is not punched down right at either end. Could even be whoever installed it used phone cable or something. 10/100 only uses 4 pins I believe while gigabit uses all 8.
 
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