Low bandwidth

[Ion-Mihai Tetcu]

On Mon, 09 May 2005 19:03:26 +0300
Sergiu - IT <sergiu.study at acasa.ro> wrote:

> 
> Hi, guys !
> I have a small network at home and I noticed something curious... When I 
> try to copy from one computer to another (the transfer is made through 
> the server - without a switch), the bandwidth is very low, about 2Mb/s. 
> Does anyone know why ? Another thing is that the bandwidth from the 
> server or from one of the "home" computers to the "outside" LAN is very 
> low too, about 700Kb/s up to 1.5Mb/s. Does anyone know why is that ?
> Here is what ifconfig shows me :
> 
> -------------------------------------  [ifconfig]
> 
> xl0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
>         options=8<VLAN_MTU>
>         inet 172.17.53.39 netmask 0xffff0000 broadcast 172.17.255.255
>         inet 195.225.67.97 netmask 0xfffffff0 broadcast 195.225.67.111
>         ether 00:10:4b:24:5f:f0
>         media: Ethernet autoselect (100baseTX <full-duplex>)
>         status: active
> fxp0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
>         options=8<VLAN_MTU>
>         inet 192.168.0.1 netmask 0xffffff00 broadcast 192.168.0.255
>         ether 00:d0:b7:0b:57:e4
>         media: Ethernet autoselect (none)
>         status: no carrier
> fxp1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
>         options=8<VLAN_MTU>
>         inet 192.168.1.1 netmask 0xffffff00 broadcast 192.168.1.255
>         ether 00:d0:b7:2b:9e:9d
>         media: Ethernet autoselect (100baseTX <full-duplex>)
>         status: active
> plip0: flags=108810<POINTOPOINT,SIMPLEX,MULTICAST> mtu 1500
> lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384
>         inet 127.0.0.1 netmask 0xff000000
> 
> -------------------------------------
> 
> An the machine info...
> 
> -------------------------------------  [uname -a]
> 
> FreeBSD sergiu-it.tarnita.net 5.3-RELEASE FreeBSD 5.3-RELEASE #1: Mon 
> Apr  4 19:08:47 EEST 2005     
> root at sergiu-it.tarnita.net:/usr/src/sys/i386/compile/server i386
> 
> ------------------------------------- 
> 
> xl0 is the NIC connected to the "outside world", fxp0 and fxp1 are 
> connected to two computers that I have in separate rooms at home. I 
> don't know if it's important, but I use ipfw and natd to give access to 
> "home" computers to the "outise world".

1. Cabling; do you loose any packets between the computers ? Is netstat
telling anything interesting ?

2. What protocol do you use? Any difference between ftp, nfs and smbfs?


-- 
IOnut
Unregistered ;) FreeBSD "user"