Does anyone have any info on implementing fail-over for APs to another Cluster? Simply adding a LMS backup IP (Cluster 2 VIP) in the AP group didnt work :D I know a bootstrap would occur I don't even see the AP in MM after powering off the cluster.
Additional info: I'm using DHCP options 43 and 60 for new APs.
Yes I have two MCs in each Cluster.
I powered off each Cluster member. Watched the A-AAC change to the S-AAC.
Powered off the last MC of cluster.
AP never reported into BLMS (VIP) of Cluster 2.
When you say " you don't even see the AP in the MM" what command are you using the see the AP in the MM?
Is there a specific guide on how AP Failover to another cluster should be configured? i.e. where is the hierarchy the AP-Groups, VLANs, and WLANs should be created? I can find articles stating it can be done using LMS and B-LMS, but no suggestions on the actual configuration.
Do you want to make an AP failover to a specific controller in the cluster?
For more information on how AP load balancing is configured,
refer the AOS UG 188.8.131.52 (Page: 373)
Say I have 2 different datacenters, and a cluster in each datacenter. If datacenter 1 cluster goes down I want the APs that typically terminate to that cluster to failover to datacenter 2 cluster.
So the scenario is like this.
Datacenter 1 - cluster 1 - APs terminated on a controller in this cluster.
Datacenter 2 - cluster 2 - APs should failover to a controller in this cluster if the controller that the APs are terminated to on cluster 1 fails.
Try this solution
Cluster 1 - This will have a MC which acts as a LMS to the APs (say 10.0.0.1 )
Cluster 2- Choose a controller which should act as a B-LMS to the AP when they fail over. (10.0.0.2)
Assuming that the datacenters have L3 connectivity, configure a vrrp instance as follows.
On Cluster 1 MC
vlan <vlan used>
ip address 10.0.0.1
authentication <choice of password>
On cluster 2 Preferred MC
ip address 10.0.0.2
Now go to the AP system profile configured for the APs, can be viewed using the command "show ap system-profile"
open the ap system-profile using the command
ap system-profile <name of the profile used>
lms-ip <cluster 1 MC>
Bckup-lms-ip <cluster 2 MC>
Save and deploy the changes.
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A_RAK is correct, that is the way of doing such a scenario. One thing to add. Instead of using a specific controller IP for LMS and Backup LMS I would use the Cluster VRRP for this entry. This makes sure, that the LMS or Backup LMS is available regardless of the status of a single controller.
The AP will first connect to the LMS IP. This should be the cluster VIP of cluster 1. it will then learn all Controllers in cluster 1 and will create tunnels to the AAC and S-AAC in Cluster 1. The Ap will only failover to cluster 2 if all controllers in cluster 1 are down or not reachable. The AP will not create a standby tunnel to a controller in Cluster 2 before all Controllers in cluster 1 are down.
Hope this gives more insights.
Would you need to have all the VLANs configure on both clusters?
e.g. Cluster 1 allowed VLANs configured on Cluster 2, and vice versa?
Yes. OR, you could create the WLANs (Virtual AP) with a VLAN name and then define a name to vlan number mapping on each cluster.
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