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2 Replies Last post: Aug 7, 2006 8:18 AM by Quotient  

Configure vSwitch load-balancing algorithm using command line posted: Jul 24, 2006 5:23 PM

Click to view Quotient's profile Expert
Quotient
394 posts since
Nov 30, 2005
Currently our pSwitch environment is using src-dst-ip for its load-balancing algorithm, which IMO is the best to use.
However, new vSwitches and importantly the default vSwitch created during setup uses the "MAC hash" value (I think...).

I can add additional pNICs to the team from the CLI using esxcfg-vswitch -L... but I can't find the command to change the teaming policy in any documented esxcfg-* tool parameters... :(

So, does anyone know how to specify the non-default load-balancing algorithm "IP hash" from the command line...?

Perhaps it's possible to use the perl module TeamPolicy.pm...? Or perhaps esxcfg-linuxnet...?

Re: Configure vSwitch load-balancing algorithm using command line

1. Jul 25, 2006 4:37 AM in response to: Quotient
Click to view mrityu's profile Enthusiast
mrityu
32 posts since
Dec 2, 2003
i dont think there is currently a documented way to do this from CLI, although it can be done via scritpting using TeamPolicy.pm, i think it would be easier to jus edit the /etc/vmware/esx.conf file manually.

Do note that manually editing any file under this folder is not supported by vmware.

the lines to look for are

/net/vswitch/child[0001]/teamPolicy/linkCriteria/beacon = "ignore"
/net/vswitch/child[0001]/teamPolicy/linkCriteria/fullDuplex = "ignore"
/net/vswitch/child[0001]/teamPolicy/linkCriteria/minSpeed = "10"
/net/vswitch/child[0001]/teamPolicy/linkCriteria/pctError = "ignore"
/net/vswitch/child[0001]/teamPolicy/maxActive = "1"
/net/vswitch/child[0001]/teamPolicy/notifySwitch = "true"
/net/vswitch/child[0001]/teamPolicy/reversePolicy = "true"
/net/vswitch/child[0001]/teamPolicy/rollingRestoration = "false"
/net/vswitch/child[0001]/teamPolicy/team = "lb_srcid"
/net/vswitch/child[0001]/teamPolicy/uplinks[0000]/pnic = "vmnic7"

and the line to edit is

/net/vswitch/child[0001]/teamPolicy/team = "lb_srcid"

to "ip_hash"

Re: Configure vSwitch load-balancing algorithm using command line

2. Aug 7, 2006 8:18 AM in response to: mrityu
Click to view Quotient's profile Expert
Quotient
394 posts since
Nov 30, 2005
Thanks for the response mrityu.

I'm trying to find a supported means for making the configuration change.

The /usr/lib/vmware/esx-perl/perl5/site_perl/5.8.0/VMware/Net/TeamPolicy.pmperl module defines the following constants:

[code]
use constant TEAM_LB_SRCID => "lb_srcid";
use constant TEAM_LB_SRCMAC => "lb_srcmac";
use constant TEAM_LB_IP => "lb_ip";
[/code]
For those that are modding esx.conf for this, note that the correct directive to use is "lb_ip"...

I'm guessing I'll need to wite a perl script that will make use of this module...

Has anyone already done this...?

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