Configuring Redundancy; External Alarm Connections - Cisco Prisma II Installation Manual

Configuring Redundancy

Configuring Redundancy

You configure the receiver module for redundancy by using the ICIM or LCI to place
both receiver channels in either Master or Slave operating mode. Then, using a
redundancy interface panel, you hard-wire the desired Master-Slave relationships
between receiver modules.
This section explains the hardware configurations required to support redundancy.
Procedures for using the ICIM or LCI to configure the module for redundancy are
provided in Operation Using ICIM (on page 75) and Operation Using LCI (on page
107).

External Alarm Connections

The Prisma II Standard and XD Chassis can be configured for local hard-wired
redundancy using the ALARM IN and ALARM OUT connectors located on the
connector interface panel. A pair of application modules can be configured in a
Master-Slave relationship so that, if the Master fails, the Slave takes over in response
to ALARM IN and ALARM OUT signaling.
This module ships from the factory configured for Single mode operation. In Single
mode, the module acts as a stand-alone device unaffected by the alarm status of any
other application module. When used in pairs in a redundant configuration, one
module in the pair is set to Master mode operation and the other is set to Slave
mode.
With this configuration, the Master communicates its critical alarm status to the
Slave. When the Master module is not in alarm, the Master is enabled and the Slave
is disabled. When the Master is in alarm, the Master is disabled and the Slave is
enabled.
The ICIM2 front panel, LCI, ROSA, CLI, or ICIM Web Interface can be used to select
Master, Slave, or Single mode operation of the module as needed.
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