cancel
Showing results for 
Show  only  | Search instead for 
Did you mean: 

Single WAN , 2 MX's ?!

SOLVED
Here to help

Single WAN , 2 MX's ?!

Hi,

 

We have a client who has a single internet connection (single UTP cable) with a single Public IP address that he's using to access some servers and services from outside (using port forwarding).

Any suggestions on how to setup 2 MX's in HA mode (hot stand-by) ? to accomplish Hardware failure availability ..

 

I know we can not use the same public IP address on both MX's at  the same time,, and using a device to terminate the ISP link first then NAT the traffic through it will cause a lot of problems for port forwarding requirements. (not to mention Auto-VPN).

 

Any recommendations?

 

1 ACCEPTED SOLUTION

Accepted Solutions
Kind of a big deal

Re: Single WAN , 2 MX's ?!

The easiest way is to get a cheap backup connection (or a 4G hot spot with Ethernet ports) and plug WAN2 of each MX into this backup circuit.  This keeps both units online and their configs and firmware up to date.

 

Then on primary circuit failure you move the cable from WAN1 on the first MX to the second MX.

5 REPLIES 5
Getting noticed

Re: Single WAN , 2 MX's ?!

You can use a small switch in between the provider's equipment and your 2 MX. Assuming you get a /29 or higher block of public IP address, you can then set each MX on its own ip addressing and connect to the ISP that has only one link.

 

No need for port forwarding or other setup since the switch is unmanaged.


Find my post helpful? Please give me a kudo!
CCNP Certified and Meraki Operator
Kind of a big deal

Re: Single WAN , 2 MX's ?!

The easiest way is to get a cheap backup connection (or a 4G hot spot with Ethernet ports) and plug WAN2 of each MX into this backup circuit.  This keeps both units online and their configs and firmware up to date.

 

Then on primary circuit failure you move the cable from WAN1 on the first MX to the second MX.

Here to help

Re: Single WAN , 2 MX's ?!

@Chris_M

Unfortunately, the ISP provided only a single IP address (not two) , hence this way will not work.

 

Highlighted
Here to help

Re: Single WAN , 2 MX's ?!

@PhilipDAth

so the physical failover will be the way to go?

No auto failover workaround in such scenarios?

Kind of a big deal

Re: Single WAN , 2 MX's ?!

Correct.

Welcome to the Meraki Community!
To start contributing, simply sign in with your Cisco account. If you don't yet have a Cisco account, you can sign up.