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MX84 Swap

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Conversationalist

MX84 Swap

We received a replacement MX84 for the clock signal issue, and I am sure this is an easy process, but what do we do to swap in the new MX84 and remove the old one while retaining all the settings?

1 ACCEPTED SOLUTION

Accepted Solutions
Kind of a big deal

Re: MX84 Swap

That article isn't bad.  Basically I did the following when I went through this.

 

1.  Plugin the MX to an internet connection so it can check-in and be managed

2.  Add it to the same network as the existing MX84 that you are going to replace.  It'll add as a spare and get the same config as the current MX84

3.  Configure the new MX84 with any WAN interface static IPs.  Those won't migrate over automatically.  Anything you configure on the MX local config page won't migrate over automatically. 

4.  Rack the MX84 directly above below your current MX84 if possible

5.  Once ready move cables port by port from the old MX84 to the new one (this will result in interruption but it should be minimal < 60 seconds).

 

Adam R MS | CISSP, CISM, VCP, MCITP, CCNP, ITILv3, CMNO
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5 REPLIES 5
Getting noticed

Re: MX84 Swap

Kind of a big deal

Re: MX84 Swap

That article isn't bad.  Basically I did the following when I went through this.

 

1.  Plugin the MX to an internet connection so it can check-in and be managed

2.  Add it to the same network as the existing MX84 that you are going to replace.  It'll add as a spare and get the same config as the current MX84

3.  Configure the new MX84 with any WAN interface static IPs.  Those won't migrate over automatically.  Anything you configure on the MX local config page won't migrate over automatically. 

4.  Rack the MX84 directly above below your current MX84 if possible

5.  Once ready move cables port by port from the old MX84 to the new one (this will result in interruption but it should be minimal < 60 seconds).

 

Adam R MS | CISSP, CISM, VCP, MCITP, CCNP, ITILv3, CMNO
If this was helpful click the Kudo button below
If my reply solved your issue, please mark it as a solution.
New here

Re: MX84 Swap

So this is basically how I did my first of 2 in a Warm Spare setup.

BUT

When I went to gracefully do HA to swap the primary in the Dashboard the spare said it was up and fine but the who LAN lost internet. (I have noticed this before and mentioned it to Meraki. If i were to have just pulled the plug on the primary and let it do a fail over it would have come up fine. This issue Only happens when using the swap button on the dashboard. Meraki support told me this is something to do with the Virtual IPs but he wasn't sure why.)
Needless to say this caused Meraki support to tell me to do a cold swap and that is when all h*%l broke loose. Downtime of 1 hour and issues caused by the dashboard seeing them as dual DHCP servers.

All I can say is stick to the Hotswap Mentioned above. just don't use the swap button on the dashboard.
Head in the Cloud

Re: MX84 Swap

Besides static IP also note that a few things on the appliance status page get lost too:

 

- Device name

- address

- notes

 

I also had a strange issue yesterday replacing an MX84 where the internet 1 link light was dark for about 25 minutes, but apparently actually working as the MX came up after that time.  I was just about to factory reset it though.

Getting noticed

Re: MX84 Swap

Hi dudes,

What if I want to replace an MX64 with an MX84? Would I follow the same procedure?

 

Thanks!

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