I would first question why you want an MTU of 9000 on the network interface
that communicates to the rest of the world. If you set your interface to an
MTU of 9000 while the rest of your network has an MTU of 1500, the VERY
BEST you are going to get is severe network performance degredation when
the rest of your network tries to break up a 9000 byte packet into 6
packets plus all the associated packet headers, etc. The most the network
will hand BACK to you is 1500 bytes, so your MTU of 9000 is 6x the rest of
your network for no gain.
At the worst, depending on what operating system you are talking to, (I've
heard early versions of win 9x and NT had this problem) it won't be smart
enough and will simply drop the 7500 extra bytes into the bit bucket and
you'll never see them again.
An MTU of 8192 is great if you have a hipersocket netwok but I can't say
it's a good idea to do on your proimary ethernet interface.
mainframe_s390
<[EMAIL PROTECTED]
ahoo.co.jp> To
Sent by: Linux on [email protected]
390 Port cc
<[EMAIL PROTECTED]
IST.EDU> Subject
I want to use the Interface(eth0
running on z/VM V5) as MTU 9000.
06/12/2005 09:46
AM
Please respond to
Linux on 390 Port
<[EMAIL PROTECTED]
IST.EDU>
Hi,all
I want to use the SLES9's Interfafe(eth0 running on z/VM
v5, connected to VSWITCH) as MTU=9000.
(The Interface is running as MTU=1500.)
I changed the parameter from MTU=1500 to MTU=9000 in
/etc/sysconfig/network/ifcfg-bus-ccw-0.0.xxxx file.
But the NIC didn't run MTU=9000.
Should I change other file??
I think I don't need to change VSWITCH's definition.
Is this right?
Please teach me.
Thank you.
-----
K.M.
__________________________________
Save the earth
http://pr.mail.yahoo.co.jp/ondanka/
----------------------------------------------------------------------
For LINUX-390 subscribe / signoff / archive access instructions,
send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or
visit
http://www.marist.edu/htbin/wlvindex?LINUX-390
----------------------------------------------------------------------
For LINUX-390 subscribe / signoff / archive access instructions,
send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit
http://www.marist.edu/htbin/wlvindex?LINUX-390
