netdev - Re: [PATCH iproute2 net-next] bridge: add support for backup port

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Date:   Fri, 12 Oct 2018 19:01:13 +0300
From:   Nikolay Aleksandrov <nikolay@...ulusnetworks.com>
To:     Stephen Hemminger <stephen@...workplumber.org>
CC:     netdev@...r.kernel.org, roopa@...ulusnetworks.com,
        dsahern@...nel.org
Subject: Re: [PATCH iproute2 net-next] bridge: add support for backup port

On October 12, 2018 6:40:28 PM GMT+03:00, Stephen Hemminger <stephen@...workplumber.org> wrote:
>On Fri, 12 Oct 2018 14:42:55 +0300
>Nikolay Aleksandrov <nikolay@...ulusnetworks.com> wrote:
>
>> This patch adds support for the new backup port option that can be
>set
>> on a bridge port. If the port's carrier goes down all of the traffic
>> gets redirected to the configured backup port. We add the following
>new
>> arguments:
>> $ ip link set dev brport type bridge_slave backup_port brport2
>> $ ip link set dev brport type bridge_slave nobackup_port
>> 
>> $ bridge link set dev brport backup_port brport2
>> $ bridge link set dev brport nobackup_port
>> 
>> The man pages are updated respectively.
>> Also 2 minor style adjustments:
>> - add missing space to bridge man page's state argument
>> - use lower starting case for vlan_tunnel in ip-link man page (to be
>> consistent with the rest)
>> 
>> Signed-off-by: Nikolay Aleksandrov <nikolay@...ulusnetworks.com>
>
>This seems a bit like feature creep in the bridge.
>Why not use team or bonding?

Not really, the bond/team cannot work in such way. We did discuss it when the kernel patches were sent, for more information please check
https://www.spinics.net/lists/netdev/msg514642.html

Thanks,
  Nik