Strange LAN Speed Problems

Soldato
Joined
7 Apr 2004
Posts
4,212
Hi,

I have a LAN Setup as follows:

PC1 -> Switch(10/100) -> PC2

(theres also a router connected to the switch), pc1 is windows and pc2 is linux.

Both PCs report as being connected at 100mbps, but the transfer speed (ftp/ssh/shares) from pc1->pc2 is about 800kbps, and pc2->pc1 about 300kbps, which is clearly no where near the 100mbps speeds I should be getting.

I have the latest NIC drivers, and my switch is a CNET 8-port, which according to the website is defiantly 10/100.

Any idea what could be causing this? Ive put the hardware details below, I hope it isnt a problem with the switch, but i have no idea :confused: :confused:

PC1 NIC: (Windows)
Code:
Marvell Yukon 88E8001 Gigabit Ethernet Controller

FlowControl On
Harware Checksumming On
Interrupt Moderation On
Speed/Duplex Auto-Sense

PC2 NIC: (Linux)
Code:
Ethernet controller: 3Com Corporation 3c940 10/100/1000Base-T [Marvell]

eth0    Link encap:Ethernet  HWaddr 00:0C:6E:65:99:50
          inet addr:192.168.1.20  Bcast:192.168.1.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1

    speed:           100
    autonegotiation: yes
    duplex mode:     full
    flowctrl:        symmetric
    irq moderation:  disabled
    scatter-gather:  disabled
    tx-checksum:     disabled
    rx-checksum:     disabled
 
you could remove the switch to see whether thats a problem, or perhaps change the network cables to rule that out also.
 
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