Wireless Access

Can the controller support Master - Master Redundancy across the Layer3 routing?

1) Active Master - Active Master

2) Active Master - Backup Master

and is this support the centralized license?

 

Example

Master#1 - IP 172.16.10.1 ------------------WAN---------------- Master#2 IP 192.168.20.1

Backup master has to be in the same segment.

You could do master-local though. These can be in different network segments.

Do you mean AP fast failover?

If Yes, What do I have to do about the vlan on both active controller and backup controller?

Can it be on the different subnet for the user-vlan id?

 

for example

active controller

• SSID-XXX, Tunnel mode, VLAN10

backup controller

• SSID-XXX, Tunnel mode, VLAN20

Correct. You would use VLAN names and tie the VLAN ID to the name on each controller

Thanks, I get it.

and what is the result in the case I have 2 standby controllers (Many active controller)

Please advise me.

Active and Standby are used for N+1 deployments. In most scenarios, you can put both controllers as DUAL, meaning they can be both a primary and a backup.

Active Controller#1 (18AP attached), Dual

Active Controller#2 (20AP attached), Dual

Active Controller#3 (13AP attached), Dual

Active Controller#4 (0AP attached), Dual (64 Support AP)

Active Controller#5 (0AP attached), Dual (64 Support AP)

 

1)What the result if #1 ,#2 and #3 controllers are fail ?

2)Should I make #5 as the standby controller?

 

Thanks again for your help.

If multiple controllers fail, you can leverage backup LMS failover.

 

Please work with your Aruba or partner SE. There are other considerations in a multi-controller environment. We don't know anything about your network.

Thanks for your advise, I will contact the Aruba Partner.

 

And I have one question

 

ControllerA - Active (Terminates 30APs)

ControllerB - Active (Terminates 0 AP)

ControllerC - Standby (Terminates 0 AP)

 

If I had HA with N:1 (many active controllers : 1 backup controller) 

Can I configure backup LMS in the AP system profile to ControllerB in the case when the ControllerC failed?

 

Refered from

http://community.arubanetworks.com/t5/tkb/articleprintpage/tkb-id/ControllerBasedWLANs/article-id/2038

"HA takes precedence over LMS"

 

Please explain and correct me. Thanks a lot

You'd want to do type Dual for all of them so they can be a primary and backup.