Cisco Systems 78-16845-01 manual Discovering NEs, Message Quality Description

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Chapter 3 Building the Network

3.9.1 Discovering NEs

3.9.1 Discovering NEs

The network discovery service in CTM collects information from individual NEs, discovers new NEs added to the network, and computes network-level information, such as physical topology and discrepancies.

When you add a new NE to CTM, the discovery process starts. When the process finishes, all of the NE information (such as inventory, configuration, physical topology, and discrepancies) is collected and CTM is updated.

3.10How Do I Synchronize the Network for Optical and Routing Devices?

Use the NE Explorer to synchronize the CTC-based NEs in your network. The following sections describe the synchronization settings in detail.

3.10.1Synchronization Settings for the ONS 15310, ONS 15327, ONS 15454 SONET, and ONS 15600 SONET

Full Cisco IOS configuration synchronization is performed automatically by CTM to keep the NE and the CTM Data Provisioning Service synchronized. Full configuration resynchronization might be delayed depending on the usage of the CTM server.

For more information, see Chapter 7, “Provisioning Services and Connections.”

Synchronization status messaging (SSM) is a SONET protocol that communicates information about the quality of the timing source. SSM messages are carried on the S1 byte of the SONET Line layer. These messages enable SONET devices to automatically select the highest quality timing reference and to avoid timing loops.

SSM messages are either Generation 1 or Generation 2. Generation 1 is the first and most widely deployed SSM message set. Generation 2 is a newer version. If SSM is enabled, consult the timing reference documentation to determine which message set to use. Table 3-18and Table 3-19show the Generation 1 and Generation 2 message sets.


		Table 3-18	SSM Generation 1 Message Set

		Message	Quality		Description

		PRS	1		Primary reference source—Stratum 1

		STU	2		Synchronization traceability unknown

		ST2	3		Stratum 2

		ST3	4		Stratum 3

		SMC	5		SONET minimum clock

		ST4	6		Stratum 4

		DUS	7		Do not use for timing synchronization

		RES	—		Reserved; quality level set by user

					Cisco Transport Manager Release 6.0 User Guide
					Cisco Transport Manager Release 6.0 User Guide
	78-16845-01							3-55
	78-16845-01							3-55

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Contents Overview Building the NetworkField Description How Do I Build Groups?Adding Groups Copying GroupsDeleting Groups Moving GroupsDeleting a Single Group Adding Network Partitions How Do I Build Network Partitions?Deleting Multiple Groups Deleting Network Partitions Modifying Network PartitionsAdding Subnetworks How Do I Build Subnetworks?Moving Subnetworks How Do I Build NEs?Deleting Subnetworks Prerequisites for Adding ONS 15216 EDFA2 or EDFA3 NEs Prerequisites for Adding 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 Restoring a Deleted NE How Do I Build Links?Searching 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 Field Modifying LinksLink Type Link Validity Link Color 14 Field Descriptions for the Modify Link Wizard Viewing Link Utilization Deleting LinksColumn Description Filtering the Link Utilization TableCustomizing a Network Map How Do I Use Network Maps?Payload Type Description Click UI Properties Viewing a Node in the Network Map Adjusting the Zoom Level or Pan PositionModifying a Node Icon Modifying a Node Icon or a Map Background ImageModifying a Map Background Saving Changes to the Network Map Discovering ONS 155xx NEs Discovering CTC-Based 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 Displaying the List of Available Clock Sources Configuring Global ClockingDisplaying the List of Manual Clock Sources Creating a Manual Clock Source How Do I Test Connectivity for Optical and Routing Devices?Method Description How Do I Test Connectivity for MGX Voice Gateway Devices? Testing NE ConnectivityPinging an NE Cisco Transport Manager Release 6.0 User Guide 78-16845-01

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