effective ftp

kshkid · 05-24-2006, 07:18 AM

hi all,

am working on solaris 5.9

here are the initial parameter's value

tcp_max_buf = 1 MB
tcp_xmit_hiwat = 48 KB

for example to transmit some 'x' 2 gb files from unix server to mainframe sys,
can the transfer of files be made faster by increasing the window size
or the send buffer size of the current TCP/IP configuration

and base link is T1-fiber link.

already n/w bandwidth utilization on our link is around 70%.

Am just thinking of ways to effectively transmit the files...

thanks!!!

kshkid · 05-29-2006, 05:10 AM

what is the capacity of a t1-fiber link?

routers · 05-29-2006, 10:59 AM

T1: 1544 kbps

kshkid · 05-31-2006, 06:34 AM

thanks a lot,

could you please help me to get the list of links and their capacities?

your help is much appreciated!!!

timmeke · 05-31-2006, 06:59 AM

If my memory serves me right, you'll need to have a look not only to the TCP/IP packet size, but also
to the size of the physical packets ("frames") on your T1.
This is not the same as your bandwidth (1544 kbps).

Your frame size depends only on your physical network protocol (Ethernet, Token Ring, etc).
When you have bigger frames, you can send out bigger TCP/IP packets. If you don't, your bigger packets will
simply get "cut up" in pieces just before physical transmission.

routers · 06-01-2006, 01:56 AM

Quote:

could you please help me to get the list of links and their capacities?

whoa !! kid, not sure if u intressted with OC48 = 2.5 Gbps
or OC192 = 9.6 Gbps