Re: [j-nsp] Random question: JUNOS upgrades on dual-RE routers
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@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@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)
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Re: [j-nsp] Random question: JUNOS upgrades on dual-RE routers
Probably also good for us as engineers to gain confidence in our equipment knowing that it's purring along just fine on the re1 as master, makes us feel better that both re's work :) -Aaron -Original Message- From: juniper-nsp [mailto:juniper-nsp-boun...@puck.nether.net] On Behalf Of Chuck Anderson I almost always leave it running as master on the former backup. It is good to exercise both REs periodically. I haven't bothered with ISSU in a long time since I have node/path redundancy. ___ juniper-nsp mailing list juniper-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/juniper-nsp
Re: [j-nsp] Random question: JUNOS upgrades on dual-RE routers
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@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@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)
- Aaron
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Re: [j-nsp] Random question: JUNOS upgrades on dual-RE routers
I almost always leave it running as master on the former backup. It is good to exercise both REs periodically. I haven't bothered with ISSU in a long time since I have node/path redundancy. On Thu, Jun 28, 2018 at 09:12:14AM -0500, Chris Adams wrote: > It's been a bit since I upgraded JUNOS on a dual-RE router, and I was > refreshing my memory from the documentation. I noticed at the end they > list switching RE mastership back to the first RE (which of course would > cause a second network outage)... is that really needed? Do you do > that, or do you leave it running on the previously-stand-by RE? ___ juniper-nsp mailing list juniper-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/juniper-nsp
[j-nsp] Random question: JUNOS upgrades on dual-RE routers
It's been a bit since I upgraded JUNOS on a dual-RE router, and I was refreshing my memory from the documentation. I noticed at the end they list switching RE mastership back to the first RE (which of course would cause a second network outage)... is that really needed? Do you do that, or do you leave it running on the previously-stand-by RE? -- Chris Adams ___ juniper-nsp mailing list juniper-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/juniper-nsp
