Finding Azure meraki MX device uplink IP Address

[mrjelly]

Hello,

I have recently upgraded an azure meraki mx device to 18.107.5, when it rebooted, an uplink connection to another mx device failed on BGP (error 4).

I would like to know how I confirm the uplink ip address of the azure meraki mx device?

I can see from a packet capture that the other mx device is sending a bgp keep alive to a certain ip address within the uplink address range but getting back the following:

180 8.341042 10.102.3.17 10.102.3.20 TCP 66 179 → 52531 [ACK] Seq=1 Ack=20 Win=260 Len=0 TSval=3874707039 TSecr=357890449

any help would be great,

thank you

[alemabrahao]

I suggest you to open a support case.

[mrjelly · Accepted solution]

Thank you for your response, yes I have.

This was an issue whereby a site to site vpn connection was not re established after a firmware update. Key to this was the reboot after the firmware update which highlighted some connectivity issues with a meraki device and a firewall.

However it is unknown if the protocols for re establishing site to site vpn have changed and this is why firstly it was able to establish and be maintained but after a reboot could not without changes.

thank you though, I will take this up with meraki support

[mrjelly]

It is taking a lot of troubleshooting and is not a straight forward easy to summarise situation but hopefully what I have included helps if this issue comes up again. It's come down to a support ticket with Cisco Meraki looking at the routing between two meraki devices mentions and the primary and secondary routes.