[j-nsp] MC-LAG reliability

Raphael Mazelier raph at futomaki.net
Thu Dec 22 12:32:30 EST 2016


My experience with VirtualChassis with a lot of them (you know where) is 
globally positive. In fact I dot not remember when a VC completly fail. 
This is not a perfect techno but it do the job for very low cost of setup.

On EX series you have no choice, afaik MC-LAG is not supported (unless 
on highend series).

On QFX I would hesitate. My tests are OK.
Running independent switches is more reliable indeed, but even with 
automation tool the cost of setup/maintenance is bit higher. (and in my 
actual work I have just no time to spend with network config 

Raphael Mazelier

On 22/12/2016 15:15, Vincent Bernat wrote:
> Hey!
> How reliable should MC-LAG be considered on EX and QFX series (in a pure
> L2 setup)?
> I had a few bad experiences with virtual chassis where a hiccup usually
> translates to both switches becoming unavailable. This is pretty rare of
> course. MC-LAG would avoid those coordinated faults but is it otherwise
> as reliable as virtual chassis?
> Thanks!

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