Network not at full speed?

GLO · 08-October-06, 07:49 AM

When i have 2 PC's wired up to the router, why does the network speed only run at about 70%???
Instead of 100%?

GLO · 08-October-06, 09:51 AM

Quote:

Originally Posted by GLO


	When i have 2 PC's wired up to the router, why does the network speed only run at about 70%??? Instead of 100%?

Actuallly they both are Gigabit cards, which cable should i use to get the most out of this direct PC to PC connenction

FeRaL · 08-October-06, 11:16 AM

You're probably going to want to get either cat5e or cat6 cable. If you are directly connecting them from NIC to NIC you are going to want a cross over cable.

khellandros66 · 09-October-06, 08:05 PM

Even at full duplex consumer grade networking gear will have lose due to lacking overhead, cable length, quality etc. No to mention one should never expect a $50-60 gigabit router to perform at full capacity.

~Bob

GLO · 09-October-06, 11:03 PM

Quote:

Originally Posted by khellandros66


	Even at full duplex consumer grade networking gear will have lose due to lacking overhead, cable length, quality etc. No to mention one should never expect a $50-60 gigabit router to perform at full capacity. ~Bob

OK, so it would be faster for me to use a Cat5E or Cat6 crossover cable, than to use the wired 100mbs router with Cat5.

FeRaL · 09-October-06, 11:25 PM

Quote:

Originally Posted by GLO


	OK, so it would be faster for me to use a Cat5E or Cat6 crossover cable, than to use the wired 100mbs router with Cat5.

Either would work fine IMHO as they are both rated at 1Gb.

GLO · 10-October-06, 12:22 AM

Quote:

Originally Posted by FeRaL


	Either would work fine IMHO as they are both rated at 1Gb.

Yep, what i meant is:

would it be faster to use the rated 1gb corssover cable, than it would be to use the 100mb/s router. Logic says it would be.

And would be able to use the 1gb crossover cable with a standard non-1gb router without any problems?

Or should i just mod a spare cat5????? (im transfering video files over 5gb, so the faster the better!)
How much faster is the 1gb cable in real world compared to the standard Cat5 100mb/x.

Reza · 10-October-06, 04:58 AM

Well your transferring files, the glass cieling your gunna hit is with how fast the other compter can acept and store the data its being sent, your never going to be able to hit the theoretical 1gb. Using 1gb crossover cable will give you stupid speeds but your limted as to how much info can be processed at the other end.

GLO · 10-October-06, 07:00 AM

Quote:

Originally Posted by Reza


	Well your transferring files, the glass cieling your gunna hit is with how fast the other compter can acept and store the data its being sent, your never going to be able to hit the theoretical 1gb. Using 1gb crossover cable will give you stupid speeds but your limted as to how much info can be processed at the other end.

Well i dont know exactly how much cpu speed and or HDD speed play in this equation, but
desktop is P4 3.0c HT cpu with SATA HDDs, and the notebook is a Core Duo 1.86 with mini-sata HDD.

I guess that i will benefit from using a 1gb crossover cable.

abyssling · 10-October-06, 08:18 AM

The fastest SATA drive on the market is the 10k RPM Raptors and they do not see more than a sustained transfer (Read) of more than 88 mb/sec so with a single drive configuration your 100mb link is more than sufficient there. Now if you are striping them in a RAID0... then yes you will want the gig NIC. Slower SATA drives are in the 57 to 78 range.

Note: these are the maximum sustained values, YMMV

GLO · 12-October-06, 10:11 AM

OK, well i picked up a 5m Cat5e Crossover cable, and its plugged into to both NICs however the connection is limited, presumably as DHCP is assigned automatically.

I guess i should assigned the NICs to the same subnet!
Also, will this still work whilst wifi is connected to the LAN/internet?

08-October-06, 07:49 AM		#1 (permalink)
GLO Apex Tech Fanatic	Network not at full speed? When i have 2 PC's wired up to the router, why does the network speed only run at about 70%??? Instead of 100%?

08-October-06, 11:16 AM		#3 (permalink)
FeRaL Mutant Moderator	Re: Network not at full speed? You're probably going to want to get either cat5e or cat6 cable. If you are directly connecting them from NIC to NIC you are going to want a cross over cable.

09-October-06, 08:05 PM		#4 (permalink)
khellandros66 Apex Master Tech	Re: Network not at full speed? Even at full duplex consumer grade networking gear will have lose due to lacking overhead, cable length, quality etc. No to mention one should never expect a $50-60 gigabit router to perform at full capacity. ~Bob

10-October-06, 04:58 AM		#8 (permalink)
Reza Apex Elite Expert Tech	Re: Network not at full speed? Well your transferring files, the glass cieling your gunna hit is with how fast the other compter can acept and store the data its being sent, your never going to be able to hit the theoretical 1gb. Using 1gb crossover cable will give you stupid speeds but your limted as to how much info can be processed at the other end.

10-October-06, 08:18 AM		#10 (permalink)
abyssling Apex Tech Maniac	Re: Network not at full speed? The fastest SATA drive on the market is the 10k RPM Raptors and they do not see more than a sustained transfer (Read) of more than 88 mb/sec so with a single drive configuration your 100mb link is more than sufficient there. Now if you are striping them in a RAID0... then yes you will want the gig NIC. Slower SATA drives are in the 57 to 78 range. Note: these are the maximum sustained values, YMMV

12-October-06, 10:11 AM		#11 (permalink)
GLO Apex Tech Fanatic	Re: Network not at full speed? OK, well i picked up a 5m Cat5e Crossover cable, and its plugged into to both NICs however the connection is limited, presumably as DHCP is assigned automatically. I guess i should assigned the NICs to the same subnet! Also, will this still work whilst wifi is connected to the LAN/internet?

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