[nog] LACP between swiches and Linux

[Marian Marinov]

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On 11/29/2014 12:20 AM, Boyan Krosnov wrote:
> As usual too little sleep leads to mistakes.
> 
> 802.1ax is LACP, not MC-LAG. MC-LAG is only available in a few implementations which follow the LACP protocol, but
> split one (or both) of LACP end-points to multiple devices (chassis). To achieve this they need to do some form of 
> synchronization between the two (or more) parts of the endpoint.
> 
> Now depending on what you are trying to achieve, you may do link aggregation / bonding without LACP. You may use
> some other form link monitoring, e.g. ICMP or ARP. In that case you simply put both ports on the switches in the
> same VLAN/VLANs, and make sure frames from a particular MAC address are always sent over the same link (as switches
> don't like updating their mac address table too often).
> 

I was just curious :)

I'm well aware of what can be achieved with pure bonding setup. But since this is the NOG group I wanted to learn is
it at all possible to achieve something like that using HW devices.

Thanks for the info Boyan,

Marian

> Best regards, BK
> 
> On 2014-11-28 22:22, Boyan Krosnov wrote:
>> Hi,
>> 
>> The standard way of doing this is 802.1ax. http://en.wikipedia.org/wiki/MC-LAG It is unlikely your switch
>> supports this.
>> 
>> There are non-standard implementations which come disguised as "switch stacking". That's also unlikely to be
>> supported by your switch.
>> 
>> It is probably easier to make this work with a static config, rather than LACP.
>> 
>> Best regards, BK
>> 
>> On 2014-11-28 21:28, Marian Marinov wrote:
> Hi guys, I'm curious have anyone managed to make LACP working between two Switches and one Linux box? The setup is
> simple, the linux box has two ethernets, each connected to separate switches. The switches have direct connectivity
> between them.
> 
> Is it at all possible. The protocol it self does not impose restrictions on LACP ports to be on the same physical 
> device, but I don't know if there is an HW implementation that can actually do that.
> 
> Marian
> 
> -- Marian Marinov Founder & CEO of 1H Ltd. Jabber/GTalk: hackman at jabber.org ICQ: 7556201 Mobile: +359 886 660 270
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- -- 
Marian Marinov
Founder & CEO of 1H Ltd.
Jabber/GTalk: hackman at jabber.org
ICQ: 7556201
Mobile: +359 886 660 270
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