I am comparing two resiliency models for the following scenario. I have 8 local controllers with 7 active and 1 as backup (ie N+1 sparing). All the controllers, including backup, are on a redundant L2/L3 switch. I believe that I have available two resiliency methods.
Method 1: I can create a VRRP instance between each active controller and the backup controller. The backup controller will be running 7 VRRP instances.
Method 2: I can use a Backup LMS IP to redirect to the backup local controller.
Neither method is hitless because I can't put all the User VLANs on the backup controller.
I prefer Method 2 but I would appreciate other views.
Thanks.