Specifications

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Cisco ONS 15530 Planning Guide
OL-7708-01
Chapter 1 System Overview
System Components
Figure 1-18 PSM Architecture
CPU Switch Modules
The Cisco ONS 15530 includes two CPU switch modules for redundancy. Each CPU switch module
consists of a number of subsystems, including a CPU, a system clock, Ethernet switch for
communicating between CPU switch modules and with the LRC (line card redundancy controller) on the
OADM modules, line cards, and carrier motherboards, and the SRC (switch redundancy controller). The
active CPU switch module controls the node, and all cards in the system make use of the system clock
and synchronization signals from the active CPU switch module.
The CPU switch module is equipped with a console port, a Fast Ethernet interface for Telnet access and
network management, and an auxiliary port. There is one slot for a compact Flash disk.
On the CPU switch module front panel are LEDs that display the status of critical, major, and minor
signals, as well as the status of alarm cutoff and history conditions.
The CPU switch modules run Cisco IOS software and support the following features:
• Automatic configuration at startup
• Automatic discovery of network neighbors
• Online self-diagnostics and tests
• Power-on diagnostics and tests
• Arbitration of CPU switch module status (active/standby) and switchover in case of failure without
loss of connections
• Automatic synchronization of startup and running configurations
• In-service software upgrades
• Per-channel APS (Automatic Protection Switching) in linear and ring topologies using redundant
subsystems that monitor link integrity and signal quality
• Trunk fiber based DWDM signal protection using APS in point-to-point topologies
• System configuration and management through the CLI and SNMP
• Optical power monitoring on the trunk side, digital monitoring on the client side, and per-channel
transponder in-service and out-of-service loopback (client and trunk sides)
• Optional out-of-band management of other Cisco ONS 15530, Cisco ONS 15540 ESP, and
Cisco ONS 15540 ESPx systems on the network through the OSC (optical supervisory channel)
• Optional inband management of other Cisco ONS 15530 systems in the network through the in-band
message channel
85919
2x2
Splitter
module
Optical
monitor