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Giga Lan Problem

  • LAN
  • Networking
Last response: in Networking
February 7, 2007 10:05:26 PM

Hi all .

I have a Network Cafe 21 Pc , and a switch 1000/100/10 ,i Connected the cables and windows gave me the 1 Gb lan Connected , when users play Any game like fifa or Counter against the pc the game doesnt lag , but when they play it multiplayer on the local network it laggs , not all the pc together but Randomly.

when i ping a pc i get this result:


Pinging with 32 bytes of data:

Reply from bytes=32 time=2ms TTL=128
Reply from bytes=32 time<1ms TTL=128
Reply from bytes=32 time<1ms TTL=128
Reply from bytes=32 time<1ms TTL=128

Ping statistics for
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 0ms, Maximum = 2ms, Average = 0ms

is this Normal?

My Switch is Assus and Cables are Cat6
Pc Spec:
P 3.4 2Mb*2 Cach
Assus P5pld2
1 Gb DDr2
256 mb X1600 pro
250 Gb Sata II

What is happening? all my Pc are high end and got a very good specification

Plz help

More about : giga lan problem

February 10, 2007 2:24:40 AM

Looks pretty normal to me. The first packet where the connection is established is 2ms, the rest all show <1ms.

The PING command does not give values in nano seconds... it's just not intended as a precision packet measurement tool.
February 18, 2007 12:06:27 AM

you could try running this tool on both of the pcs

run one wiht

ipeft -c IP_OF_SERVER

and the other

iperf -s

to run it as server


iperf.exe" --help
Usage: iperf [-s|-c host] [options]
iperf [-h|--help] [-v|--version]

-f, --format [kmKM] format to report: Kbits, Mbits, KBytes, MBytes
-i, --interval # seconds between periodic bandwidth reports
-l, --len #[KM] length of buffer to read or write (default 8 KB)
-m, --print_mss print TCP maximum segment size (MTU - TCP/IP header)
-o, --output <filename> output the report or error message to this specifie
d file
-p, --port # server port to listen on/connect to
-u, --udp use UDP rather than TCP
-w, --window #[KM] TCP window size (socket buffer size)
-B, --bind <host> bind to <host>, an interface or multicast address
-C, --compatibility for use with older versions does not sent extra msgs
-M, --mss # set TCP maximum segment size (MTU - 40 bytes)
-N, --nodelay set TCP no delay, disabling Nagle's Algorithm
-V, --IPv6Version Set the domain to IPv6

Server specific:
-s, --server run in server mode
-D, --daemon run the server as a daemon
-R, --remove remove service in win32

Client specific:
-b, --bandwidth #[KM] for UDP, bandwidth to send at in bits/sec
(default 1 Mbit/sec, implies -u)
-c, --client <host> run in client mode, connecting to <host>
-d, --dualtest Do a bidirectional test simultaneously
-n, --num #[KM] number of bytes to transmit (instead of -t)
-r, --tradeoff Do a bidirectional test individually
-t, --time # time in seconds to transmit for (default 10 secs)
-F, --fileinput <name> input the data to be transmitted from a file
-I, --stdin input the data to be transmitted from stdin
-L, --listenport # port to recieve bidirectional tests back on
-P, --parallel # number of parallel client threads to run
-T, --ttl # time-to-live, for multicast (default 1)

-h, --help print this message and quit
-v, --version print version information and quit

[KM] Indicates options that support a K or M suffix for kilo- or mega-

The TCP window size option can be set by the environment variable
TCP_WINDOW_SIZE. Most other options can be set by an environment variable
IPERF_<long option name>, such as IPERF_BANDWIDTH.

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