RE: RAC 10.2.0.3
- From: "Matthew Zito" <mzito@xxxxxxxxxxx>
- To: <goran00@xxxxxxxxx>, <ujang.jaenudin@xxxxxxxxx>
- Date: Sun, 18 Nov 2007 21:32:39 -0500
Regardless of whether or not Path MTU discovery is enabled, the MTU will never
go larger than the configured MTU of the Ethernet interface - which by default
is 1500 bytes. If you want to use jumbo frames (>1500 byte mtus), you need to
configure the interface using ifconfig to use a larger framesize. Also, your
switches need to be configured appropriately, but if you can use a 9000 byte
MTU, I would recommend it.
Matt
--
Matthew Zito
Chief Scientist
GridApp Systems
P: 646-452-4090
mzito@xxxxxxxxxxx
http://www.gridapp.com
-----Original Message-----
From: oracle-l-bounce@xxxxxxxxxxxxx on behalf of goran bogdanovic
Sent: Sun 11/18/2007 4:13 AM
To: ujang.jaenudin@xxxxxxxxx
Cc: rprabha01@xxxxxxxxx; oracle-l@xxxxxxxxxxxxx
Subject: Re: RAC 10.2.0.3
I can't say how MTU size is managed on HP-UX...but at least AFAIK in Linux
should not be an issue, because Linux implements a method known as "path MTU
discovery" (if enabled) to determine the MTU on a site-by-site basis.
If the initial (or manually adjusted) MTU used for a connection is too high,
Linux throttles it back until it works...kind of self optimizing the
connection.
Maybe you should speak with your SA to check what is behavior in HP or
someone on the list with better HP knowledge can give you more info.
regards,
goran
Other related posts:
