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RE: [LUG] Network speeds



OK - I think there are two items of concern here.

1 - From an IP point for view, your subnet masks are different, so your broadcast 
addresses are different.

0xffffff00 = 255.255.255.0
0xff000000 = 255.0.0.0

The 10/8 subnet is all private, so its not a big issue, but you really should pick a 
subnet and stick with it. Small is beautiful, so I'd checnge the linux box netmask 
to 255.255.255.0.

2 - "Interrupt:3 Base address:0x300" is a dead giveaway - I'd bet (but only a very 
small sum...) that this is a horrid old 10MB half duplex Ethernet card - probably an 
NE2000 clone - possible even an old ISA card. These cards were *rubbish* because the 
CPU does ALL of the work to inspect every packet. Shell out £6 for a new D-Link PCI 
100Mbit full-duplex one from 
http://www.ebuyer.com/customer/products/index.html?product_uid=43684 and my guess is 
that'll fix your pain. You could even be a cheapskate and get their own-brand one 
for £2.75+VAT.

HTH

Alasdair Cunningham-Smith

-----Original Message-----
From: owner-list@xxxxxxxxxxxx [mailto:owner-list@xxxxxxxxxxxx] On Behalf Of Mark 
Mitchell
Sent: 20 October 2004 02:04
To: DCLUG
Subject: [LUG] Network speeds


eth0      Link encap:Ethernet  HWaddr 00:09:5B:1D:18:3E  
         inet addr:10.0.0.9  Bcast:255.255.255.255  Mask:255.0.0.0
         Interrupt:3 Base address:0x300 

sis0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
       media: Ethernet autoselect (100baseTX full-duplex)
       inet 10.0.0.3 netmask 0xffffff00 broadcast 10.0.0.255


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