Cisco Systems 78-16845-01 manual Discovering CTC-Based NEs, Discovering ONS 155xx NEs

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Chapter 3 Building the Network

3.8.1 Discovering CTC-Based NEs

Note The Discovered Network Elements group can be viewed only by users who have all NEs assigned to them. Therefore, in the Add New NE wizard, the grouping option “Group discovered NEs in the Discovered Network Elements Group” is not available.

3.8.1 Discovering CTC-Based NEs

When a CTC-based NE is added as a GNE, all NEs that are DCC-connected to the GNE are automatically discovered. The discovered NEs are added automatically to CTM. The location of the new NE depends on what you set up in the discovery wizard.

3.8.2 Discovering ONS 155xx NEs

When you add a new ONS 155xx NE to CTM, the discovery process starts. When the process finishes, all of the NE information (such as inventory, configuration, physical topology, logical circuits, and discrepancies) is collected and CTM is updated. In addition, neighbors of the added NE are discovered. To discover new neighbors, the discovery service relies on CDP neighbor information and topology neighbor information obtained from NEs.

The CTM ONS 155xx discovery service uses the following measures to keep the NE and network information in CTM synchronized with the NEs themselves:

•Periodic rediscovery based on the resync interval. Periodic rediscovery brings the information in CTM up to date for all ONS 155xx NEs in the network and rediscovers any new neighbors. The resync interval can be viewed and reset in the Control Panel. (For information about resetting the resync interval, see 3.8.4 Resetting the Resync Interval, page 3-53.) If at least one ONS 155xx is already in the system, the first periodic rediscovery starts when the ONS 155xx NE service starts. The NE service usually starts when the CTM server is restarted. If no ONS 155xx NEs are in the system when CTM restarts, the first periodic discovery starts when the first ONS 155xx is added.

•Event-triggered rediscovery launched by certain changes to ONS 155xx NEs. Event-triggered discovery incrementally updates CTM with the new information. New neighbors of the affected NE are discovered. The device changes that trigger rediscovery include, but are not limited to, the following: reboot, CPU switchover, patch and topology changes, and insertion and removal of physical components.

•User-requested rediscovery. Users can request rediscovery of selected ONS 155xx NEs or the entire ONS 155xx network at any time. This updates CTM with information about the NEs. For more information about using rediscovery commands, see 3.8.3 Rediscovering ONS 155xx, CRS-1, and XR 12000 NEs, page 3-52.

Note Only active NEs (NEs that are in the In Service or Under Maintenance states) can participate in the rediscovery process.

3.8.2.1 Discovery Information Table

The Discovery Information table displays discovery information for both individual devices for the main discovery. The main discovery includes the discovery of individual devices plus network-level computations for topology, discrepancies, and logical circuits. The Discovery Information table shows

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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