Re: Does bonding driver support 802.3ad "port-priority"?

Linux Advanced Routing and Traffic Control

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Martin T <m4rtntns@xxxxxxxxx> wrote:
[...]
>does Linux bonding driver support 802.3ad "port-priority" feature? For
>example in Cisco devices one can assign a "lacp port-priority" to each
>port on a device running LACP. The port priority is used to decide
>which ports should be put in standby mode when a hardware limitation
>or the "lacp max-bundle" command configuration prevents all compatible
>ports from aggregating. Such feature is also supported for example on
>Juniper gear. Based on "Linux Ethernet Bonding Driver HOWTO" bonding
>driver does not seem to support this feature..

	No, it doesn't.  All bonding slaves are set to port priority
(Actor_Port_Priority) of 255, and bonding has no equivalent to the
max-bundle option.  The LAG selection logic described in 802.1AX 5.6.1
is not implemented, as bonding does not restrict the size of an
aggregation.

	-J

---
	-Jay Vosburgh, jay.vosburgh@xxxxxxxxxxxxx
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