Cisco Systems 78-16845-01 manual Setting Up Internal Timing for CTC-Based SDH NEs

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Chapter 3 Building the Network

3.10.2 Synchronization Settings for the ONS 15454 SDH and ONS 15600 SDH

Note Refer to the Cisco ONS 15454 SDH Troubleshooting Guide or Cisco ONS 15600 SDH

Troubleshooting Guide for timing-related alarms.

3.10.2.2 Setting Up Internal Timing for CTC-Based SDH NEs

If no BITS source is available, you can set up internal timing by timing all nodes in the ring from the internal clock of one node.

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

Step 1 Select an ONS 15454 SDH or ONS 15600 SDH NE and choose Configuration > NE Explorer.

Step 2 In the node property pane, select the Timing tab.

Step 3 In the General Timing section of the General subtab, enter the following information:

•Timing Mode—Choose External.

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

•Reversion Time—Not applicable; leave unchanged.

Step 4 In the BITS Facilities section of the General subtab, enter the following information:

•E1, T1, 2.048 MHz, 64 KHz—Choose E1, T1, 2.048 MHz, or 64 KHz depending on the signal supported in your market. For example, 64 KHz is used in Japan. E1, 2.048 MHz, and 64 KHz are physical signal modes used to transmit the external clock (from a GPS, for example) to BITS.

•In State— Set BITS 1 and BITS 2 to OOS.

•Out State— Set BITS 1 and BITS 2 to OOS.

• State (Applicable to the ONS 15600 SDH)—Set BITS 1 and BITS 2 to OOS.

•Coding—Not relevant for internal timing; the default is sufficient.

•Framing—Not relevant for internal timing; the default is sufficient.

•Sync Messaging—Checked automatically. SSM is used to deliver clock quality. The SSM supported in SDH is G811, STU, G812T, G812L, SETS, DUS (ordered from high quality to low quality). If you selected 2.048 MHz or 64 KHz, the SSM option is disabled.

•AIS Threshold—Not relevant for internal timing.

•LBO—Not relevant for internal timing.

•Sa bit—Not relevant for internal timing.

Step 5 In the Reference List subtab, enter the following information:

 

•

NE References

 

 

 

 

 

 

 

–

Ref-1—Set to

Internal Clock.

 

 

–

Ref-2—Set to

Internal Clock.

 

 

–

Ref-3—Set to

Internal Clock.

 

•

BITS 1 Out/BITS 2 Out (Applicable to the ONS 1545 SDH)—Set to None.

 

 

 

 

Cisco Transport Manager Release 6.0 User Guide

 

 

 

 

 

 

 

 

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Contents Overview Building the NetworkField Description How Do I Build Groups?Adding Groups Copying GroupsMoving Groups Deleting GroupsDeleting a Single Group How Do I Build Network Partitions? Adding Network PartitionsDeleting Multiple Groups Deleting Network Partitions Modifying Network PartitionsAdding Subnetworks How Do I Build Subnetworks?How Do I Build NEs? Moving SubnetworksDeleting Subnetworks Prerequisites for Adding NEs Prerequisites for Adding ONS 15216 EDFA2 or EDFA3 NEsPrerequisites for Adding ONS 15302 and ONS 15305 NEs Building the Network Prerequisites for Adding NEs Hostnames and IP Addresses Required An Efficient Network Topology Setup Prerequisites for Adding Cisco CRS-1 and XR 12000 NEs Prerequisites for Adding ONS 1580x NEsPrerequisites for Adding Cisco MGX Voice Gateway Devices Prerequisites for Adding Cisco Catalyst 6509 NEsOption Description Setting Up Nonstandard Community StringsChanging the Service-Level Passwords Using the CLI Adding a Single NE Adding NEsNE ID NE ID- Read-only Adding Multiple NEsField Descriptions for the Add New NE Wizard NE Properties Panel Not selectable if Automatic subnetwork Grouping is enabled Moving an NE from One Group to Another Copying an NE from One Group to AnotherAutomatically Grouping NEs in Subnetworks Moving an NE from One Network Partition to AnotherDeleting a Single NE Deleting NEsDeleting Multiple NEs Removing a Deleted NE How Do I Build Links? Restoring a Deleted NESearching for an NE Overview of Supported Links ONS 15454 Sonet Layer NE Model NE Card PhysicalOPT-BST ONS 15600 Sonet File Viewing the Link Table10describes the fields in Link table Field Description Filtering Links in the Network Map Filtering the Link TableCreating Links Building the Network Creating Links 12 Field Descriptions for the Create Link Wizard Field Descriptions for the Create Link Wizard Modifying Links FieldLink Type Link Validity Link Color 14 Field Descriptions for the Modify Link Wizard Viewing Link Utilization Deleting LinksColumn Description Filtering the Link Utilization TableHow Do I Use Network Maps? Customizing a Network MapPayload Type Description Click UI Properties Viewing a Node in the Network Map Adjusting the Zoom Level or Pan PositionModifying a Node Icon or a Map Background Image Modifying a Node IconModifying a Map Background Saving Changes to the Network Map Discovering CTC-Based NEs Discovering ONS 155xx NEsDiscovery Information Table Time stamp Rediscovering ONS 155xx, CRS-1, and XR 12000 NEsResetting the Resync Interval How Do I Discover the Network for MGX Voice Gateway Devices? Message Quality Description Discovering NEsSetting Up External or Line Timing for CTC-Based Sonet NEs Building the Network Bits 1 OUT Setting Up Internal Timing for CTC-Based Sonet NEsOOS Setting Up External or Line Timing for CTC-Based SDH NEs Unframed , FAS , FAS + CAS Bits 1 OUT Setting Up Internal Timing for CTC-Based SDH NEs Viewing Clocking Sources Configuring Global Clocking Displaying the List of Available Clock SourcesDisplaying the List of Manual Clock Sources How Do I Test Connectivity for Optical and Routing Devices? Creating a Manual Clock SourceMethod Description Testing NE Connectivity How Do I Test Connectivity for MGX Voice Gateway Devices?Pinging an NE Cisco Transport Manager Release 6.0 User Guide 78-16845-01
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