Users Guide

632| Increasing Network Uptime Through Redundancy and VRRP Dell Networking W-Series ArubaOS 6.5.x| User Guide
Command Description
cfgm set sync-type <complete>
The master sends the full configuration file to the
local.
cfgm set sync-type <snapshot>
The master sends only the incremental
configuration to the local.
NOTE: This configuration is enabled by default
cfgm set sync-command-block <number>
Configures the number of command-list blocks.
Each block contains a list of global configuration
commands for each write-mem operation. The
number is 3 by default.
show master-configpending
Displays a list of global commands that are not
saved but sent to the local.
clear master-local-session <A.B.C.D>
Manually pushes the full configuration to the local.
Table 135: Incremental Configuration Synchronization Commands
Configuring Master-Local Controller Redundancy
This section outlines the concepts behind a redundancy solution where a master can act as a backup for one or
more local controllers, and shows how to configure the Dell controllers for such a redundant solution. In this
solution, the local controllers act as the controller for the APs. When any one of the local controllers becomes
unavailable, the master takes over the APs controlled by that local controller for the time that the local
controller remains unavailable. It is configured such that when the local controller comes back again, it can take
control over the APs once more.
This type of redundant solution is illustrated by the following topology diagram:
This solution requires that the master controller have Layer-2 connectivity to all local controllers.
Figure 80 Redundant Topology: Master-Local Redundancy