Installation guide

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Cisco ONS 15530 Hardware Installation Guide
OL-7706-01
Chapter 1 Cisco ONS 15530 Overview
Cisco ONS 15530 Components
CPU Switch Modules
The Cisco ONS 15530 supports two CPU switch modules for redundancy, one in active mode and the
other in hot-standby mode. CPU switch modules are installed in slot 5 and slot 6. Each CPU switch
module has a processor, a switch fabric, a clock, an Ethernet switch for communication between
processors and with the LRC (line card redundancy controller) on the OADM modules and line cards,
and an SRC (switch card redundancy controller). The active processor controls the system. All LRCs in
the system use the system clock and synchronization signals from the active processor. Interfaces on the
CPU switch modules permit access by 10/100 Ethernet, console terminal, or modem connections.