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Getting MAXIMUM transfer speed on LAN

 
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Old 01-24-2015
Getting MAXIMUM transfer speed on LAN
Dear All,

I have a problem with the transfer speed between 2 hosts on my local network (LAN).
At home, I have a switch (NETGEAR GS105 ProSafe 5-Port Gigabit Ethernet Desktop Switch) which obviously supports Gigabit Ethernet, 2 boxes (intel NUC DC3217IYE Barebone PC and Gygabyte BRIX GB-XM12 mini PC) are connected to this switch with Cat 6 Ethernet cables. They both have Gigabit NICs and run CentOS. They both have internal 500GB SSD hard drives.

I need to transfer a vast amount of files between the 2 servers, but when I run scp -r or rsync on the directories I want to copy, the transfer speed of each file is barely 2-3 MB/s...
I really hope this can be increased.

Any idea how to obtain the best possible transfer speed between my 2 boxes?
Please note that my internet provider gave me a poor modem (Netgear modem which only support 100Mbps Ethernet connections, the switch has a cable connection towards my Modem.
At the moment one mini PC has a fix ip address the other is using dhcp, if this can have any influence?

The all point of getting a switch is to skip the Ethernet poor speed of the modem, but so far it has not been very successful.

Many thanks for your inputs and keep up the good work!

Freddie
freddie50
 
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LEARN ABOUT DEBIAN

arpspoof

ARPSPOOF(8)						      System Manager's Manual						       ARPSPOOF(8)

NAME

       arpspoof - intercept packets on a switched LAN

SYNOPSIS

       arpspoof [-i interface] [-c own|host|both] [-t target] [-r] host

DESCRIPTION

       arpspoof  redirects packets from a target host (or all hosts) on the LAN intended for another host on the LAN by forging ARP replies.  This
       is an extremely effective way of sniffing traffic on a switch.

       Kernel IP forwarding (or a userland program which accomplishes the same, e.g. fragrouter(8)) must be turned on ahead of time.

OPTIONS

       -i interface
	      Specify the interface to use.

       -c own|host|both
	      Specify which hardware address t use when restoring the arp configuration; while cleaning up, packets  can  be  send  with  the  own
	      address  as  well  as  with  the	address  of the host. Sending packets with a fake hw address can disrupt connectivity with certain
	      switch/ap/bridge configurations, however it works more reliably than using the own address, which is the default way arpspoof cleans
	      up afterwards.

       -t target
	      Specify a particular host to ARP poison (if not specified, all hosts on the LAN). Repeat to specify multiple hosts.

       -r     Poison both hosts (host and target) to capture traffic in both directions.  (only valid in conjuntion with -t)

       host   Specify the host you wish to intercept packets for (usually the local gateway).

SEE ALSO

       dsniff(8), fragrouter(8)

AUTHOR

       Dug Song <dugsong@monkey.org>

																       ARPSPOOF(8)