[CentOS] Interface bonding?

Fri Apr 11 21:23:10 UTC 2008
Ross S. W. Walker <rwalker at medallion.com>

Les Mikesell wrote:
> Ross S. W. Walker wrote:
> > > 
> > I don't think you need to do all that:
> > 
> > Check out: 
> http://www.cisco.com/en/US/docs/switches/lan/catalyst2900xl_3500xl/release12.0_5_wc3/swg/Swgports.html
> > 
> I've run 2900xl's connected to each other though 2 ports each 
> configured 
> with:
> port group 1 distribution destination
> but never tried it with anything non-cisco.

This should give you what you need when doing 802.3ad LAGs:

interface FastEthernet0/21
 port group 1
 spanning-tree portfast
interface FastEthernet0/22
 port group 1
 spanning-tree portfast

It might have been the lack of STP portfasting that gave you
trouble initially as the Linux LACP might have timed out
waiting for STP discovery to finish.

Here is a good wiki article on link aggregation:

And here is a good site on Linux bonding interface:

You only need to setup port groups when doing 802.3ad, if
you use the other methods you may need to tune out the
2900XL for the constantly shifting MAC addresses.


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