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Cisco Systems ONS 15327 manual

Models: ONS 15327

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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. They enable SONET devices to automatically select the highest-quality timing reference and to avoid timing loops.

78-11719-02 July 2001	Using Cisco Transport Controller 3
Figure 3-21	An ONS 15327 timing example with external, BITS, and internal timing

BITS1 source

BITS2 source

Node 1

Timing External

Ref 1: BITS1

Ref 2: BITS2

Ref 3: Internal (ST3)

Slot 5

Slot 6

Node 4	Slot 6	Slot 5	Node 2
Timing Line	Slot 6	Slot 5	Timing Line
Ref 1: Slot 6			Ref 1: Slot 5
Ref 2: Slot 5			Ref 2: Slot 6
Ref 3: Internal (ST3)			Ref 3: Internal (ST3)
	Slot 5	Slot 6
	Slot 5

Slot 6

Slot 5

BITS1 BITS2

out out

Third party equipment

Node 3

Timing Line

Ref 1: Slot 5

Ref 2: Slot 6

Ref 3: Internal (ST3)

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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. They 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 you enable SSM for the ONS 15327, consult your timing-reference documentation to determine which message set to use. Table 3-13and Table 3-14show the Generation 1 and Generation 2 message sets.

Table 3-13	SSM Generation 1 Message Set

Message	Quality	Description

PRS	1	Primary reference source - Stratum 1

STU	2	Sync 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

Cisco ONS 15327 User Documentation

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Cisco Systems ONS 15327 manual

Contents

Using Cisco Transport Controller 3.1 OverviewC H A P T E R Procedure Install Netscape Windows 3.2 Installing CTC3.2.1 Preparing PCs to Run CTC Procedure Install Netscape Solaris Procedure Extracting the CTC Version 2.3 Files for Solaris3.2.2 Preparing Solaris Workstations to Run CTC Procedure Install the Java Files Solaris Step 4 Un-compress each patch ﬁle by typing Procedure Enable Applet Security for CTC Procedure Set Up a PC for Direct Connection 3.3 Connecting PCs to the ONSe Check Enable DNS for Windows Resolution 3.3.1 Direct Connectionsc Click Properties Click Specify an IP address Procedure Disable Proxy Service Using Windows with Netscape Procedure Disable Proxy Service Using Windows with Internet ExplorerSettings 3.3.2 LAN Connections3.3.4 Connecting to the ONS 15327 with TL1 Terminals 3.3.3 Remote Access to the ONS3.4 Logging into CTC 3.5 Viewing CTC Procedure Log into the CTCFigure 3-6 CTC in node view login default 3.5.1 Node ViewNode View Card Colors Card ColorDescription Node View Tabs and SubtabsSubtabs Alarm Status 3.5.2 Network ViewFigure 3-7 The CTC network view Node Status3.5.2.1 Inserting an Alternative Network Topology Map Procedure Set Up an Alternative Network MapSelected Area, Set Background Color, Set Background Image, Remove Background ImageStep 2 Choose the General tab and uncheck Use Default Map 3.5.2.2 Creating Domains Procedure Create a New DomainStep 2 Choose Create New Domain 3.5.3 Card View 3 Using Cisco Transport Controller78-11719-02 July 3.5.4 CTC Navigation3-20 Cisco ONS 15327 User Documentation 3.5.5 Table Data 3-22 Cisco ONS 15327 User Documentation 3.5.6 Inventory DataLocation-The slot where the card is installed Alarm Data 3.6 Viewing ONS 15327 Alarms, Conditions, and EventsColumn Description3.6.1 Controlling Alarm Display Figure 3-15 Viewing current-session alarms and events 3.6.2 Viewing Alarm HistoryProcedure Set Up General Node Information 3.7 Setting Up General Node InformationStep 2 Click the Provisioning General tabs Procedure Convert Coordinates to Degrees, Minutes, and Seconds Procedure Set Up Network Information 3.8 Setting Up General Network Information3.8.1 Changing the IP Address page Maintenance 3.9 Setting Up ONS 15327 SecurityONS 15327 Security Levels CTC TabProcedure Create New Users Procedure Edit User Security at the Network Level all nodes Procedure Edit User Security Node LevelStep 2 Click the Provisioning Security tabs Click the Provisioning Security tabsProcedure Create Protection Groups for Optical Cards 3.10 Setting Up Protection GroupsProcedure Edit Protection Groups Procedure Delete Protection Groups 3.11 Setting Up Timinga Click the Maintenance Protection tabs Step 3 Click the Provisioning Protection tabsSynchronization 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. They enable SONET devices to automatically select the highest-quality timing reference and to avoid timing loops Procedure Set Up ONS 15327 Timing Sync Messaging- Check to enable SSM 3.12.1 Using Virtual Wires 3.12 Setting Up External User-Provisionable AlarmsProcedure Provision External Alarms 3.12.2 External Input AlarmsFigure 3-24 shows the External Alarms subtab 3.12.3 External Output Controls Procedure Provision External ControlsExample of the external alarm input and output process 3.13 Creating Alarm ProﬁlesAlarm Proﬁles are created at the network view using the Provisioning Alarming tabs Figure 3-27. A default alarm proﬁle in the Default column is pre-provisioned and you use the Clone feature to create new proﬁles based on the default alarm proﬁle Step 2 Click the Provisioning Alarming tabs Procedure Create an Alarm ProﬁleProcedure Apply an Alarm Proﬁle at the Node View Procedure Apply an Alarm Proﬁle at the Card ViewStep 2 Click the Provisioning DS1 or DS3 Alarming tabs c Click Force still need to “Apply”3.14 Printing and Exporting CTC Data Procedure Export CTC Data Procedure Print CTC Dataﬁlename.htm 3.15 Displaying CTC Data in Other Applicationsﬁlename.csv ﬁlename.tsv