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From "David P. Donahue" <ddona...@ccs.neu.edu>
Subject RE: [users@httpd] Narrowing Down A Strange Problem
Date Wed, 15 Sep 2004 18:07:46 GMT
I think I'll wait until I get home tonight (and have console access) to
test this :)

But you've taught me something new, thank you!



> -----Original Message-----
> From: Alexander Stoll [mailto:technoworx@gmx.de] 
> Sent: Wednesday, September 15, 2004 2:09 PM
> To: users@httpd.apache.org
> Subject: Re: [users@httpd] Narrowing Down A Strange Problem
> 
> 
> David P. Donahue schrieb:
> 
> > I am interested in your suggestion to "lower the MTU of 
> your server." 
> > This is new to me and I would love to add it to my testing. 
>  How would 
> > I lower this value?  Note, I am running Apache 1.3.31 on Slackware 
> > 10.0.
> 
> OK, here we go...
> This is something your OS has to provide and is independend 
> from Apache... I don´t know slackware distribution but basic 
> tools must be present...
> 
> if you become root on the system and fire up a "ifconfig" 
> something like
> 
> eth0      Link encap:Ethernet  HWaddr 00:D0:B7:06:2B:4D
>            inet addr:10.0.0.130  Bcast:10.0.0.255  Mask:255.255.255.0
>            UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
> 
> should appear, if you prefer ip, type in "ip link show" an 
> something like
> 
> 1: lo: <LOOPBACK,UP> mtu 16436 qdisc noqueue
>      link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
> 2: eth0: <BROADCAST,MULTICAST,ALLMULTI,UP> mtu 1500 qdisc pfifo_fast 
> qlen 1000
>      link/ether 00:d0:b7:06:2b:4d brd ff:ff:ff:ff:ff:ff
> 
> this indicates a mtu of 1500 (normal ethernet default)
> 
> If you haven´t access to the console of the server, be aware 
> of that any 
> changes who interrupt network connectivity could cause no 
> more access to 
> your server! So be careful... ;-)
> 
> with present values
> "ifconfig eth0 down; ifconfig eth0 10.0.0.130 netmask 
> 255.255.255.0 broadcast 10.0.0.255 mtu 1250 up" (in one 
> line!!!) brings up the interface with desired mtu
> 
> alternative with ip:
> 
> "ip link set eth0 mtu 1250"
> 
> This should be prefered if ip is present on your server since this 
> should be non destructive to your network connectivity. 
> Replace values 
> for address, netmask, broadcast and interface name with your 
> local needs...
> 
> REMEMBER! Don´t hammer on my mailbox when a mistyped command destroys 
> network access to your server until rebooted... ;-)))
> 
> Best wishes, AS
> 
> 
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