[j-nsp] Random question: JUNOS upgrades on dual-RE routers

[Chuck Anderson]

I've been doing it for years with no ill effects.  The only thing I do
is change the backup/master designations in chassis redundancy to
clear the alarm about running on the backup RE:

mx960> show configuration chassis redundancy |display set 
set chassis redundancy routing-engine 0 backup
set chassis redundancy routing-engine 1 master
set chassis redundancy failover on-loss-of-keepalives
set chassis redundancy failover on-disk-failure
set chassis redundancy graceful-switchover

On Thu, Jun 28, 2018 at 09:28:25AM -0500, Aaron Gould wrote:
> In my testing I haven't seen an issue with leaving it like this, however,
> that is my lab testing.... I only turned up my dual re, (5) node 100 gig
> ring of mx960's about 2 months ago with live traffic, and haven't had to do
> any issu upgrades or anything ... so I can only speak from my lab test thus
> far... but, with re1 running as master and re0 running as backup, it's been
> fine in lab.
> 
> ...lab 240...
> root at lab-mx-240> show chassis routing-engine | grep "slot|state|elec"
>   Slot 0:
>     Current state                  Backup
>     Election priority              Master (default)
>   Slot 1:
>     Current state                  Master
>     Election priority              Backup (default)
> 
> ...lab 960...
> {master}
> agould at lab-960> show chassis routing-engine | grep "slot|state|elec"
>   Slot 0:
>     Current state                  Backup
>     Election priority              Master (default)
>   Slot 1:
>     Current state                  Master
>     Election priority              Backup (default)