Re: Bonding performance question

[Paul Heinlein <heinlein@xxxxxxxxxx>]

On Tue, 11 Jan 2011, James Pearson wrote:

> You could use xmit_hash_policy=layer2+3 - which just uses MAC and IP 
> addresses (which you do have more control over) - and see if you can 
> pick a mix of IP/MAC addresses that would result in all four 
> interfaces being used (theoretically) - and see if it matches 
> reality?

I semi-apologize for this question, but I don't have a suitably 
equipped machine-switch combination free for testing, so I can't do 
empirical testing.

I don't see the layer2+3 option listed in the CentOS 5.5 bonding 
module:

# modinfo bonding | egrep 'version|xmit'
version:        3.4.0
srcversion:     0B48FBAC9285804638A6BE7
parm:           xmit_hash_policy:XOR hashing method: 0 for layer 2
                 (default), 1 for layer 3+4 (charp)

Is the layer2+3 option simply undocumented via modinfo or is it not 
present in the CentOS bonding module?

-- 
Paul Heinlein <> heinlein@xxxxxxxxxx <> http://www.madboa.com/
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