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network speeds for LAN are slower than those of the WAN
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eamonn
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Joined: 18 Mar 2003
Posts: 118

PostPosted: Wed Feb 20, 2008 10:20 am    Post subject: network speeds for LAN are slower than those of the WAN Reply with quote

From my laptop i have a connection to my wireless router. My server has a wired connection to my router. It is faster for me to download files from the internet than to scp them from the server.

From the internet i get about 1.6MB and from the LAN i get about 100k.

I have a dlink 635 router which is 802.11n.
My laptop is a macbookpro which supports 802.11n.

any ideas please?
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vad3r
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Joined: 02 May 2004
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Location: Munich, Germany

PostPosted: Wed Feb 20, 2008 10:45 am    Post subject: Reply with quote

Have you checked for collisions on your server? Please post the output of "ethtool ethX" on your server.
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eamonn
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Joined: 18 Mar 2003
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PostPosted: Thu Feb 21, 2008 10:42 am    Post subject: Reply with quote

thanks for the reply,

the upload speed from the server to my macbookpro is now about 1MB
the upload speed from the macbookpro to my server is still 100k

This is the result of ethtool:
Quote:

ethtool eth0
Settings for eth0:
Supported ports: [ TP MII ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
Supports auto-negotiation: Yes
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
Advertised auto-negotiation: Yes
Speed: 100Mb/s
Duplex: Full
Port: MII
PHYAD: 1
Transceiver: internal
Auto-negotiation: on
Current message level: 0x00000007 (7)
Link detected: yes


this is the result of ifconfig:
Quote:

ifconfig
eth0 Link encap:Ethernet HWaddr
inet addr:192.168.2.2 Bcast:192.168.2.255 Mask:255.255.255.0
inet6 addr: fe80::218:39ff:feac:704e/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:2567222 errors:0 dropped:0 overruns:0 frame:0
TX packets:1932029 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:2178006888 (2.0 GiB) TX bytes:1747059546 (1.6 GiB)

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:14815 errors:0 dropped:0 overruns:0 frame:0
TX packets:14815 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:2327852 (2.2 MiB) TX bytes:2327852 (2.2 MiB)
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eamonn
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Joined: 18 Mar 2003
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PostPosted: Sat Feb 23, 2008 9:44 am    Post subject: Reply with quote

any ideas anyone?
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flybynite
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Joined: 06 Dec 2002
Posts: 620

PostPosted: Sat Feb 23, 2008 11:46 pm    Post subject: Re: network speeds for LAN are slower than those of the WAN Reply with quote

eamonn wrote:
It is faster for me to download files from the internet

than to scp them from the server.



Sorry, but I have to ask are you using scp for both downloads?

scp uses encryption which is cpu limited rather than network limited.
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