Specifications

1-27

Cisco ONS 15530 Planning Guide

OL-7708-01

Chapter 1 System Overview

System Components

Figure 1-15 10-Gbps Uplink Card Architecture

The 10-Gbps uplink card has only one pair of optical connectors on the front panel and can be used for

unprotected or line card protected applications. For splitter protected configurations, use the 10-Gbps

ITU trunk card.

The Cisco ONS 15530 supports up to four 10-Gbps uplink cards for a total of four channels.

OSC Modules

The Cisco ONS 15530 supports the OSC on a separate module installed in a carrier motherboard. The

carrier motherboard accepts up to two OSC modules. Implemented as a 33rd wavelength (channel 0), the

OSC is a per-fiber duplex management channel for communicating between Cisco ONS 15530,

Cisco ONS 15540 ESP, and Cisco ONS 15540 ESPx systems. The OSC allows control and management

traffic to be carried without the necessity of a separate Ethernet connection to each Cisco ONS 15530,

Cisco ONS 15540 ESP, and Cisco ONS 15540 ESPx in the network.

The OSC is established over a point-to-point connection and is always terminated on a neighboring node.

By contrast, data channels may or may not be terminated on a given node, depending on whether the

channels are express (pass-through) or add/drop.

The OSC carries the following types of information:

• CDP (Cisco Discovery Protocol) packets—Used to discover neighboring devices

• IP packets—Used for SNMP and Telnet sessions between nodes

• OSCP (OSC Protocol)—Used to determine whether the OSC link is up

• APS protocol packets—Used for controlling signal path switching

QuadPHY

Tx mux /

Rx demux

FPGA

QuadPHY

LRC

64/66

Encoder

10-Gbps

1310nm

transceiver

79298