Chapter 4 Turn Up Node

DLP-D70 Set Up Internal Timing

–Timing Mode set to Line—Your options are the node’s working OC-N cards (non-DWDM nodes), or OSC cards (DWDM nodes) and Internal Clock. Select the cards/ports that are directly or indirectly connected to the node wired to the BITS source, that is, select the node’s trunk cards. Set Reference 1 to the trunk card that is closest to the BITS source. For example, if Slot 5 is connected to the node wired to the BITS source, select Slot 5 as Reference 1.

–Timing Mode set to Mixed—Both BITS and optical cards are available, allowing you to set a mixture of external BITS and optical trunk (span) cards as timing references.

•BITS-1 Out/BITS-2 Out—Define the timing references for equipment connected to the Timing A Out or Timing B Out FMEC connector. Normally, Timing Out is used with line nodes, so the options displayed are the working optical cards. Timing A Out and Timing B Out are enabled as soon as BITS-1 and BITS-2 facilities are placed in service.

Step 6 Click Apply.

Note Refer to the Cisco ONS 15454 SDH Troubleshooting Guide for timing-related alarms.

Step 7 Return to your originating procedure (NTP).

DLP-D70 Set Up Internal Timing

Purpose

This task sets up internal timing (Stratum 3) for an ONS 15454 SDH.

Tools/Equipment

None

Prerequisite Procedures

DLP-D60 Log into CTC, page 3-24

Required/As Needed

As needed (use only if a BITS source is not available)

Onsite/Remote

Onsite or remote

Security Level

Provisioning or higher

Caution Internal timing is Stratum 3 and not intended for permanent use. All ONS 15454 SDH nodes should be timed to a Stratum 2 or better primary reference source.

Note CTC refers to Timing A and Timing B as BITS-1 and BITS-2. The MIC-C/T/P FMEC connector is labeled as Timing A and Timing B.

Step 1 In node view, click the Provisioning > Timing tabs.

Step 2 In the General Timing area, enter the following:

•Timing Mode—Choose External.

•Revertive—Not applicable for internal timing; the default setting (checked) is sufficient.

•Reversion Time—Not applicable; leave unchanged. For internal timing, the default setting (5 minutes) is sufficient.

Step 3 In the BITS Facilities area, enter the following information:

 

 

Cisco ONS 15454 SDH Procedure Guide, R4.6

 

 

 

 

 

 

January 2004

 

 

4-25

 

 

 

 

 

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Cisco Systems Cisco ONS 15454 SDH manual DLP-D70 Set Up Internal Timing
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Cisco ONS 15454 SDH specifications

Cisco Systems has long been a leader in networking and telecommunications, and one of its notable products is the Cisco ONS 15454 SDH (Synchronous Digital Hierarchy) system. Designed to support a wide range of networking applications, this platform is particularly suited for the transportation of voice, data, and video across metropolitan and wide area networks.

One of the main features of the Cisco ONS 15454 is its modular architecture, allowing for flexible configurations to meet varying demands. This flexibility enables service providers and enterprises to scale their networks as needed, easily adding or removing modules without significant downtime. The system can accommodate multiple technologies, including SONET, SDH, and wavelength-division multiplexing (WDM), making it an excellent solution for diverse environments.

Another critical characteristic of the ONS 15454 is its high-capacity transport capabilities. It can handle up to 400 Gbps in a single chassis, enabling operators to manage larger amounts of data traffic efficiently. This scaling is crucial for meeting the ever-increasing requirements for bandwidth in modern networks, especially with the rise of cloud services and video streaming.

Furthermore, the Cisco ONS 15454 supports various interface options, including Ethernet, TDM, and fiber channel, enabling operators to adapt the system to their existing infrastructures. This compatibility simplifies integration with legacy systems, allowing for a smoother transition to more advanced technologies.

Cisco has also placed a strong emphasis on network management and operational efficiency with the ONS 15454. Integrated management tools provide real-time monitoring and diagnostics, facilitating proactive maintenance and reducing operational costs. The system is designed for high reliability, featuring built-in redundancy and failover capabilities to ensure continuous service availability.

The ONS 15454's versatility extends to its support for various service types, ranging from basic voice services to complex data applications. It can effectively create service level agreements (SLAs) and prioritize traffic, enhancing the quality of service for critical applications.

In conclusion, the Cisco ONS 15454 SDH platform stands out for its modular design, high capacity, adaptability to different technologies, and robust management capabilities. It serves as a reliable backbone for network operators seeking to future-proof their infrastructures while addressing the dynamic demands of modern communication services. With Cisco's reputation for quality and innovation, the ONS 15454 remains a preferred choice for service providers looking to enhance their network capabilities.
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