[j-nsp] LACP/LAG

[Christopher E. Brown]

Unless you like losing traffic or looping traffic stay away from unconditional channeling.

There are a number of situations ranging from a failing linecard/port to a simple
misconfig that will leave the links up but not properly functional.


Possible issues...

All traffic going down link X is lost...

Far end thinks link1 and link2 are normal ports and creates a loop condition...


etc..


Use active signaling wherever possible...  Fast timing whereyou have good nodes doing
hardware offload, slow timing with less ideal boxen.


BTW: with LACP, Active v.s. Passive has to do with if we initiate LACP traffic, LACP v.s.
fixed on channeling is something else.

On 10/17/2013 1:00 PM, Keith wrote:
> Hi.
> 
> Any reason not to run LACP on a LAG link?
> 
> Setting up a new LAG with some gear on our MX and have setup the AE
> interface and turned it up, but have not actually cut traffic over to it yet.
> 
> They were saying run in passive or no LACP, with it just
> 
> On cisco one does: channel-group <x> mode on/active/passive and I
> did have trouble getting both sides to come up properly on the cisco, one
> side would always come up suspended until I set the ports to just on.
> 
> I have done the same on the MX side, except I did not use aggregated-ether-options lacp
> and just left that statement out.
> 
> Both sides came up on the MX and it looks ok. Am I going to get bitten in the ass
> at some point for not running LACP?
> 
> Docs I see always configure LACP for LAGs, and mention not running it but never really
> why you would.
> 
> Thanks,
> Keith
> _______________________________________________
> juniper-nsp mailing list juniper-nsp at puck.nether.net
> https://puck.nether.net/mailman/listinfo/juniper-nsp


-- 
------------------------------------------------------------------------
Christopher E. Brown   <chris.brown at acsalaska.net>   desk (907) 550-8393
                                                     cell (907) 632-8492
IP Engineer - ACS
------------------------------------------------------------------------