Cisco ONS 15200 - Manual (Page 21)

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Cisco ONS 15200 Product Description
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Product Configurations
This chapter describes common Cisco ONS 15200 network configurations. All modules mentioned in
this chapter are described in more detail in
Chapter 5, “Module Descriptions.”
2.1 ONS 15200 Network Configurations
The ONS 15200 operates in several network configuration arrangements. All ONS 15200 configurations
consist of one or more ONS 15252 Multichannel Units (MCU) or ONS 15201 Single-Channel Units
(SCUs). The following information describes some standard ONS 15200 network configurations,
including:
• The “Bus Configuration” section on page 2-1
• The “Ring Configuration” section on page 2-2
• The “Dual-Home Configuration” section on page 2-3
• The “Multichannel Point-to-Point Configuration” section on page 2-3
• The “Ring Configuration with Hubbed and Meshed Traffic” section on page 2-4
• The “Full-Mesh Configuration” section on page 2-5
2.1.1 Bus Configuration
In an ONS 15200 system bus configuration, wavelength channels link an ONS 15252 MCU to ONS
15201 SCUs. Use this configuration only in networks where optical-layer fiber protection is
unnecessary. It is possible to configure the bus configuration for layer-3 load-sharing protection or client
layer 1+1 APS, but the two data traffic flows would need to share the same optical fiber path, and
therefore protection would be incomplete.
In the bus configuration, the Client Layer Interface Port (CLIP) modules located in the ONS 15252 MCU
and in each ONS 15201 SCU exchange data.
Figure 2-1 illustrates the ONS 15200 system bus
configuration.
Note The physical connection in Figure 2-1 consists of two fiber-optic cables.