[j-nsp] MC-LAG reliability

[Vincent Bernat]

Hey!

It's for a quite basic ToR setup: each server in the rack dual
linked. L2 only. No STP.

All servers have a couple of BGP sessions running through the
switches but they don't do any routing. Some of the QFX will act as
route reflectors, so they can have an IP on their IRB, but that should
be quite independant of this MC-LAG stuff, right?
-- 
Make sure comments and code agree.
            - The Elements of Programming Style (Kernighan & Plauger)

 ――――――― Original Message ―――――――
 From: Alberto Santos <albertofsantos at gmail.com>
 Sent: 22 décembre 2016 17:29 +0100
 Subject: Re: [j-nsp] MC-LAG reliability
 To: Vincent Bernat
 Cc: juniper-nsp at puck.nether.net

> Hi,
>
> last time a colleague checked the PR list, VC had more issues than MC LAG.
> How your L2 setup looks like? Do you configure STP on your L2 network ? which version? make sure the STP version you have today is officially
> supported by juniper when you implement it.
>
> if you have any routing protocol such as eBGP or OSPF runnung through these switches, you should make sure you test before you convert it to a
> MC LAG setup.
>
> With juniper pyez, there is no excuse to keep this in a VC setup, you should really consider MC LAG :), another good advantage that you get is
> ISSU instead of NSSU :D 
>
> cheers and merry xmas
>
> Alberto Santos CCIE #26648
> JNCIP-SP
> "...Fix your DNS, make it dual-stack, take your mail server and make it dual-stack, take your web server and make it dual-stack..." by Randy
> Bush/RIPE IPv6
>
> On 22 December 2016 at 15:15, Vincent Bernat <bernat at luffy.cx> 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!
>  --
>  Many pages make a thick book, except for pocket Bibles which are on very
>  very thin paper.
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