I upgraded a network with 2 x MS120 switches to 12.28 (stable) and then lost the switches and connection to cloud.
Just before having to drive 80km to power cycle them the MX started complaining about Duplicate IP 18.104.22.168 and the two mac addresses were the switches.
Why does the meraki use a public ip of 22.214.171.124 ?
Why do the switches boot with this ip ? (I have them set for DHCP)
I did a wireshark capture and both switches are arping 126.96.36.199 and getting no where.....
can some one explain what is going on here makes no sence..
I've never seen a switch default to using 188.8.131.52. Are they statically configured? Perhaps double check their IP configuration.
ps. The switches should auto roll back the upgrade if they can't communicate with the Meraki cloud. So try waiting a bit longer (30 minutes) before jumping into the car.
184.108.40.206 isn't Meraki thats Cloudflares DNS.
What are your MX DNS settings?
no both switches are set to DHCP. it has been 9 hours now and they are still doing this. what is wierd is all the cameras and AP that are connected to the switch are showing as not connected to cloud also but are working ok. and the users on the switch are still working ok. I don't get it at all and at this point support don't either. Some one is going to site to power cycle the switches.
the MX is set to use Cisco umbrella DNS. but the arp ing shows 220.127.116.11 (mac of switch) trying to arp for the address of 18.104.22.168.
Had this happen to another single switch site now. this site the switch is still working but not connected to cloud it was interesting as a power cycle did not fix the issue but the users were not effected and switch was still passing traffic
8-12 hours later the switch started talking to cloud its self with the last error being "Disabled Switch Bad DNS"
I am wondering if this is a MX DHCP issue as all these issue started when the MXs were upgraded to 15.42 from 14 to fix the "Unable to download configuration error" which was happening more frequently.
Doing a wire shark capture using the MAC address of the switch you can see it making DHCP requests on native vlan and other vlan and getting responses !
I just upgraded my office switches to 14.16 and got a duplicate IP 22.214.171.124 alert when doing it. do the switches boot with address of 126.96.36.199 ??? something wierd is going on here. anyone else getting 188.8.131.52 duplicate ip alerts ??
I upgraded a stack of three MS210s to 14.16 three weeks ago and didn't have any issues. Their management interfaces are set using DHCP, are you using static IPs for management?
I just upgraded another site with MS120s, 210s, 220s and 225s from 14.12 to 14.16. No issues like you experienced @CharlieCrackle
I have upgraded MS120from 14.12 to 14.16 without me any issues.
The switches are set to get their IP addresses form DHCP on a management VLAN.
Are you switches on a the default VLAN, or one you specified?
@DHAnderson I've upgraded switches with static and DHCP management interface IPs, some on default VLAN and some not (the ones that are not were all on DHCP). But none were MS125s, I wonder if the issue applies to them?
@DHAnderson I think he has MS125s, look at the screenshot of them with the red arrows on.