Wireless Access

How do I convert two standalone controllers (8.4) to a pair - A master and Local in the old 6.x terminology.

FYI there is no MM invloved.

Regards,

MF

Hi MD-RF,

The master local construct does not work in 8.x anymore. You can either use an MM to run them as part of the MM architecture or both as standalone. 

You can run them in a limited master-standby construct as I described here:

https://www.flomain.de/2017/11/master-standby-arubaos-8/

But I really recommend using a Mobility Master. 

BR

Florian

That would just about do , however can I assume that the Standby master cannot terminate APs while the master is up, even with HA?

yes, that's true. The standby cannot terminate AP's. Only in the case of a failure of the master, will the standby terminate AP's. That's no active:active solution. 

That's why I would recommend a Mobility Master and a cluster setup. 

I've setup the master redundancy but the standby doesn't seem to be syncing. On the master there is only one switch in the "show switches" output and when I run the "show running-config" command on the standby it says "modul SAPM is busy. Please try later".

It also has "Last Snapshot (master unreachable)" under the "show switches" command.

can you ping the master, from the standby? 

Yes the master can be pinged from the local. The VRRP redundancy is up and working correctly with the master contorller as master in the VRRP and the standby running as "Backup".

what does a 

#show database synchronize  

 tell you? Do you see errors in the syslog? 

On the local it shows -

Last L2 synchronization time: standby not synchronized since last reboot

L2 periodic synchronization is enabled and runs every 5 minutes

On the master -

to master switch at <standbyipaddress>: ***  FAILED  ***

-output omitted-

L2 synchronization took 30 second

L3 Synchronization took less than one second

251 L2 synchronization attempted

251 L2 synchronization have failed

0 L3 synchronization attempted

0 L3 synchronization have failed

L2 periodic synchronization is enabled and runs every 5 minutes

L3 periodic synchronization is disabled

I have raised a case with TAC ad it seems that the master redundancy VRRP needs to run on the management VLAN. In effect it is dependent on the command "controller-ip vlan".

Hi MD-RF,

Oh yes, that is true. You need to run it on the controller IP. Did you changed this it and does it work now? 

I've learned that the hard way too, at a customer :) 

Yes I have changed this and it now works. Its worth noting that I had already done the configuration of all of the profiles which did not get pushed to the Standby controller. If you need to sync the profiles they need to be configured at the Mobility Controller level (/mm not /mynode). /mynode is the default area you are placed into when logging into the controller.