Wireless/Redundant Edge Services xl Module Management and Configuration Guide WS.02.xx and greater

10-13
Redundancy Groups
Configuring a Redundancy Group
Note If you have assigned an IP address to more than one VLAN on the module, you
should use the IP address assigned to the default management interface
(which, by default, is VLAN 1).
If you decide to enter the IP address for a different VLAN, however, you must
ensure that the redundancy traffic (such as the heartbeat and update mes-
sages) can be transmitted to the other module in the group. If the other module
is installed in another wireless services-enabled switch on the network, both
wireless services-enabled switches and all the switches in between must be
able to transmit traffic on that VLAN.
3. In the Redundancy Group ID field, enter a number for the group. Each
redundancy group on your network must have a unique group ID, and you
must use the same group ID for each member of the group. You can enter
any number from 1 through 65535.
4. Choose the Mode:
• Select Active to allow the module to adopt RPs in all circumstances
(as long as the group has sufficient licenses).
• Select Standby to allow the module to adopt RPs only when active
members fail to do so.
More than one member of the group can act in active mode, and more than
one can act in standby. You can choose either mode for either model (the
Wireless Edge Services xl Module or the Redundant Wireless Services xl
Module). See “Active or Standby Mode” on page 10-4 and “Adopting RPs”
on page 10-5 for more information on the effects of the mode.
5. In the Discovery Period field, accept the default setting of 30 seconds, or
enter a number from 10 through 60 seconds. (The discovery period is the
amount of time that the module spends locating the other modules and
ensuring that they are using the same redundancy group configuration.)
6. In the Heartbeat Period field, accept the default setting of 5 seconds, or
enter a number from 1 through 255 seconds. Each module in the redun-
dancy group periodically sends a heartbeat to determine if the other
modules are still “alive,” or available. This setting determines the number
of seconds between each heartbeat.