Hi Christopher,
In my example, "confignics -s" can configure MTU=9000 correctly:
postscripts]# lsdef bybc0607 -i
ip,nicextraparams.eth0,nicnetworks.eth0,nictypes.eth0
Object name: bybc0607
ip=10.5.106.7
nicextraparams.eth0=MTU=9000
nicnetworks.eth0=10_0_0_0-255_0_0_0
nictypes.eth0=Ethernet
Currently, confignics use nicextraparams to configure MTU value.
The MTU in network table is used in ip from DHCP.
Best Regards
--------------------------------------------------
Yuan Bai (白媛)
CSTL HPC System Management Development
Tel:86-10-82451401
E-mail: by...@cn.ibm.com
Address: IBM ZGC Campus. Ring Building 28,
ZhongGuanCun Software Park,No.8 Dong Bei Wang West Road, Haidian
District,
Beijing P.R.China 100193
IBM环宇大厦
北京市海淀区东北旺西路8号，中关村软件园28号楼
邮编:100193
From: Yuan Y Bai/China/IBM@IBMCN
To: xCAT Users Mailing list <xcat-user@lists.sourceforge.net>
Date: 02/22/2017 01:39 PM
Subject: Re: [xcat-user] Setting MTU
Hi Christopher,
"nicextraparams.ens1f0=MTU=9000" and set the MTU of 9000 in
the networks table, then DHCP now correctly sets the MTU to be 9000; MTU
in the networks table can configure network from DHCP.
If you want to set MTU as static, you should use
nicextraparams.ens1f0=MTU=9000 in nics table;
Currently, confignics use nicextraparams to configure static attribute in
ifcfg-*;
Best Regards
--------------------------------------------------
Yuan Bai (白媛)
CSTL HPC System Management Development
Tel:86-10-82451401
E-mail: by...@cn.ibm.com
Address: IBM ZGC Campus. Ring Building 28,
ZhongGuanCun Software Park,No.8 Dong Bei Wang West Road, Haidian District,
Beijing P.R.China 100193
IBM环宇大厦
北京市海淀区东北旺西路8号，中关村软件园28号楼
邮编:100193
Inactive hide details for "Christopher J. Walker" ---02/21/2017 07:30:55
PM---I'm trying to configure the MTU to be 9000 for Ce"Christopher J.
Walker" ---02/21/2017 07:30:55 PM---I'm trying to configure the MTU to be
9000 for Centos 7 hosts on our internal network. I'm using xC
From: "Christopher J. Walker" <c.j.wal...@qmul.ac.uk>
To: "xcat-user@lists.sourceforge.net" <xcat-user@lists.sourceforge.net>
Date: 02/21/2017 07:30 PM
Subject: [xcat-user] Setting MTU
I'm trying to configure the MTU to be 9000 for Centos 7 hosts on our
internal network. I'm using xCAT 2.12.4
A way that works is to set the MTU explicitly on a network card basis -
so I do:
nicextraparams.ens1f0=MTU=9000
and add
"confignics -s"
to the postscripts for the node.
However we have a number of different hardware types - and the internal
network card name therefore changes.
It seems cleaner to set the MTU in the MTU column of the networks table,
instead of explicitly listing each network card type. For testing, I've
removed the "nicextraparams.ens1f0=MTU=9000" and set the MTU of 9000 in
the networks table. DHCP now correctly sets the MTU to be 9000, but this
is then removed by "confignics -s" - resulting in the default of 1500
after install.
Is this an oversight on my part, or a bug in confignics, or configeth
Chris
--
Dr Christopher J. Walker
ITS Research
Queen Mary University of London, E1 4NS
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