01-21-2013 12:19 AM - edited 03-07-2019 11:12 AM
We are Copying file(bakup or any other) in Lan Network ...... from pc1 to other location (please refer the attached Diagram)..
My quistion is.. My Link 1 is 100 mb but it's not utilizing it's spped its only using 10 mbps and
gig link utilize 100 mbps ...why this Happens... how can i solve this issue.
Some traffic is there but every time it takes same amount of time.
Please help........
Solved! Go to Solution.
01-21-2013 12:39 AM
I think you are confusing MegaByte(MByte) with Megabit(Mbit).
8Mbit = 1MByte
100Mbit = 12MByte
1000Mbit = 120MByte
at 100Mbit it would take a 300MByte file 25 seconds with no overhead( ~30 sec with basic TCP/IP overhead)
at 1000Mbit it would take a 300MByte file 2.5 seconds with no overhead( ~3.0 sec with basic TCP/IP overhead)
So what you are seeing is correct, and per speed specifications.
Best regards,
Paul
01-21-2013 02:07 AM
Hi,
of course link speeds are in bps not Bps.
Regards.
Alain
Don't forget to rate helpful posts.
01-21-2013 12:39 AM
I think you are confusing MegaByte(MByte) with Megabit(Mbit).
8Mbit = 1MByte
100Mbit = 12MByte
1000Mbit = 120MByte
at 100Mbit it would take a 300MByte file 25 seconds with no overhead( ~30 sec with basic TCP/IP overhead)
at 1000Mbit it would take a 300MByte file 2.5 seconds with no overhead( ~3.0 sec with basic TCP/IP overhead)
So what you are seeing is correct, and per speed specifications.
Best regards,
Paul
01-21-2013 02:01 AM
That Means switch has 100 megabit Links not 100 megabyte.......
01-21-2013 02:07 AM
Hi,
of course link speeds are in bps not Bps.
Regards.
Alain
Don't forget to rate helpful posts.
01-21-2013 02:42 AM
thank u .... paul & cadet.
02-12-2013 07:16 PM
Hi Paul,
One doubt, could you please tell me how this calculation is done ?
Thanks in advance
Thomas
01-21-2013 05:57 AM
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Just want to also note, beside hosts normally dealing with bytes/sec and networks bits/second, there are often many layers of overhead between the network's bits/second and what you might see on a host for bytes/seconds. There's L2 protocol overhead (e.g. Ethernet), L3 protocol overhead (e.g. IP), L4 protocol overhead (e.g. TCP) and even other layers of overhead (e.g. FTP, CIFS, SMB, etc.).
Also, when copying large files between hosts, you can bump into physical limitions of the hosts, such as disk drives might not be able to sustain network high speed (even with modern hosts, it can be issue when you're dealing with gig interfaces).
01-23-2013 10:06 PM
thanks for additional information Joseph
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