MX-75 port Internet3, WAN2 physically not functioning

Vlad_Ghimboasa
Here to help

MX-75 port Internet3, WAN2 physically not functioning

Hi everyone, 

 

We have 2 Internet connection from different providers. Both are perfectly functional when connected to port internet2, WAN1. It is our understanding that port internet3, WAN2 should automatically be available when a cable is connected to it. WAN1 and WAN2 are correctly configured. Even with our best efforts, WAN2 port internet3 is physically dead. Are we missing something?

 

Thank you  

12 Replies 12
Jinbe
Meraki Employee
Meraki Employee

Hi @Vlad_Ghimboasa ,

 

For the MX appliance where you are attempting to utilize WAN3 as a Backup Uplink, are you able to confirm the firmware is on 18.2 or greater? 

 

In order for the MultiWAN Backup Uplink feature to function as expected it does require the appliance be on firmware 18.2 or higher. 

 

For more information regarding this feature, you can reference this doc as well: https://documentation.meraki.com/MX/MultiWAN_Backup_Uplink

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Vlad_Ghimboasa
Here to help

Hi @Jinbe 

 

Our firmware is MX-18.211.2. In our case, we use Internet2 as WAN1 and Internet3 as WAN2

 

The doc of the Multiwan backup Link is confusing us as it seems to contradict the following documentation:  

Vlad_Ghimboasa_0-1724185391543.png

 

https://documentation.meraki.com/MX/MX_Overviews_and_Specifications/WAN_Behavior_on_MX75%2F%2F85%2F%...

PhilipDAth
Kind of a big deal
Kind of a big deal

This is correct.  You should not have "WAN on port 3" enabled.  That is only used when you are using three Internet circuits.

Jinbe
Meraki Employee
Meraki Employee

Correct, you will notice that the MultiWAN backup document does talks about those pairs you've brought up here. MultiWAN backup uplink is a newer feature as well and is designed for having 3 WAN connections. 

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Vlad_Ghimboasa
Here to help

@PhilipDAth @Jinbe 

 

Thank you for your answers, if I understand correctly, we can only "Enable Backup WAN on port 3" if we have three internet circuits? In our case, we have two internet circuits from different internet providers. how can we configure it? Thank you for your time

ww
Kind of a big deal
Kind of a big deal

You need to enable the backup port on the mx dashboard uplink page

Vlad_Ghimboasa
Here to help

Are you referring to this button?

Vlad_Ghimboasa_1-1724185422128.png

 

We tried that, but it seems to switch all the configurations

KH
Meraki Employee
Meraki Employee

Hey @Vlad_Ghimboasa 

By physically, do you mean there is no link light whatsoever? Have you performed a loopback test by plugging a cable into that port and another MX port (If this fails its just a bad port unless disabled)? Can you ensure the port isn't logically disabled by checking the local status page?

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Vlad_Ghimboasa
Here to help

Yes, there is no light whatsoever, we did not try the loopback, but the local status page indicates it is enabled.

PhilipDAth
Kind of a big deal
Kind of a big deal

Hi Vlad.  Ports 3 and 4 (the copper WAN ports) are only checked for WAN ports at power on.

 

So if you power on the MX and then plug in the ports - they won't work.  You'll need to power cycle the MX75 to get them going.

Vlad_Ghimboasa
Here to help

Our intention is to try again to enable the backup WAN, thanks for your answers.

Vlad_Ghimboasa
Here to help

Hello everyone, we did a factory reset on the MX75 and the port internet3, WAN2 is now active. Thank you all for your time.

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