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Cisco ONS 15454 SDH User Manual

Cisco ONS 15454 SDH
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CHAPTER
1-1
Cisco ONS 15454 SDH Troubleshooting Guide, R5.0
July 2005
1
General Troubleshooting
This chapter provides procedures for troubleshooting the most common problems encountered when
operating a Cisco ONS 15454 SDH. To troubleshoot specific ONS 15454 SDH alarms, see Chapter 2,
Alarm Troubleshooting. If you cannot find what you are looking for, contact Cisco Technical Support.
See the “Obtaining Technical Assistance” section on page xlvi for more information.
This chapter includes the following sections on network problems:
1.1 Troubleshooting Non-DWDM Circuit Paths with Loopbacks, page 1-2—Describes loopbacks
and hairpin circuits, which you can use to test circuit paths through the network or logically isolate
faults
Note For dense wavelength-division multiplexing (DWDM) network acceptance tests, refer to the
Cisco ONS 15454 DWDM Installation and Operations Guide, as this guide also applies to DWDM
operations for SDH. For SDH network acceptance tests, refer to the Cisco ONS 15454 SDH Procedure
Guide Chapter 5, “Turn Up Network.
1.2 Troubleshooting Electrical Circuit Paths With Loopbacks, page 1-9—Explains how to use
loopback tests described in “1.1 Troubleshooting Non-DWDM Circuit Paths with Loopbacks” to
isolate trouble on electrical circuits.
1.3 Troubleshooting Optical Circuit Paths With Loopbacks, page 1-39—Explains how to use
loopback tests described in “1.1 Troubleshooting Non-DWDM Circuit Paths with Loopbacks” to
isolate trouble on STM-N optical circuits.
1.4 Troubleshooting Ethernet Circuit Paths With Loopbacks, page 1-62—Explains how to use
loopback tests described in the “1.1 Troubleshooting Non-DWDM Circuit Paths with Loopbacks”
to isolate trouble on G-Series or CE-Series Ethernet circuits.
1.5 Troubleshooting MXP, TXP, or FC_MR Circuit Paths With Loopbacks, page 1-80—Explains
how to use loopbacks tests described in“1.1 Troubleshooting Non-DWDM Circuit Paths with
Loopbacks” to isolate trouble on muxponder (MXP), transponder (TXP), or Fibre Channel
(FC_MR) circuits.
1.6 Troubleshooting DWDM Circuit Paths With ITU-T G.709 Monitoring, page 1-96—Explains
how to utilize performance monitoring (PM) and threshold crossing alerts (TCA) to locate signal
degrades on DWDM circuit paths.
The remaining sections describe symptoms, problems, and solutions that are categorized according to
the following topics:
1.7 Using CTC Diagnostics, page 1-104—Provides procedures and guidelines for checking card
LED readiness and downloading a diagnostic file for Cisco Technical Support (TAC).

Table of Contents

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Cisco ONS 15454 SDH Specifications

General IconGeneral
Product TypeOptical Transport Platform
Form FactorRack-mountable
ManagementCisco Transport Controller (CTC)
TechnologySDH
Slots17
Power SupplyRedundant
Operating Temperature0 to 40°C
Humidity5% to 95% non-condensing
Supported InterfacesEthernet, Fibre Channel

Summary

Troubleshooting Non-DWDM Circuit Paths with Loopbacks

Facility Loopbacks

Information on facility loopback operations and card-specific behaviors.

Terminal Loopbacks

General information and card behavior for terminal loopback operations.

Hairpin Circuits

Explanation of hairpin circuits for testing specific VC circuits.

Cross-Connect Loopbacks

Testing STM-N circuit paths through the cross-connect card.

Troubleshooting Electrical Circuit Paths With Loopbacks

Perform a Facility (Line) Loopback on a Source Electrical Port (West to East)

Step-by-step guide for performing a facility loopback on a source electrical port.

Perform a Hairpin Test on a Source-Node Electrical Port (West to East)

Procedure for conducting a hairpin test on a source-node electrical port.

Perform an XC Loopback on a Destination-Node STM-N VC (West to East) Carrying an Electrical Signal

Testing XC loopback on a destination STM-N VC carrying an electrical signal.

Perform a Terminal (Inward) Loopback on a Destination Electrical Port (West to East)

Steps for performing a terminal loopback on a destination electrical port.

Perform a Facility (Line) Loopback on a Destination-Node Electrical Port (East to West)

Performing a facility loopback on a destination electrical port.

Perform a Hairpin Test on a Destination-Node Electrical Port (East to West)

Conducting a hairpin test on a destination-node electrical port.

Perform an XC Loopback on a Source-Node STM-N VC (East to West) Carrying an Electrical Circuit

Testing XC loopback on a source STM-N VC carrying an electrical circuit.

Perform a Terminal (Inward) Loopback on a Source-Node Electrical Port (East to West)

Steps for performing a terminal loopback on a source-node electrical port.

Troubleshooting Optical Circuit Paths With Loopbacks

Perform a Facility (Line) Loopback on a Source-Node Optical Port

Performing a facility loopback test on a source-node optical port.

Perform a Terminal (Inward) Loopback on a Source-Node Optical Port

Executing a terminal loopback test on a source-node optical port.

Perform an XC Loopback on the Source Optical Port

Performing an XC loopback test on the source optical port.

Perform a Facility (Line) Loopback on an Intermediate-Node Optical Port

Conducting a facility loopback test on an intermediate-node optical port.

Perform a Terminal (Inward) Loopback on an Intermediate-Node Optical Ports

Executing a terminal loopback test on intermediate-node optical ports.

Perform a Facility (Line) Loopback on a Destination-Node Optical Port

Performing a facility loopback test on a destination-node optical port.

Perform a Terminal Loopback on a Destination-Node Optical Port

Executing a terminal loopback test on a destination-node optical port.

Troubleshooting Ethernet Circuit Paths With Loopbacks

Perform a Facility (Line) Loopback on a Source-Node Ethernet Port

Performing a facility loopback test on a source-node Ethernet port.

Perform a Terminal (Inward) Loopback on a Source-Node Ethernet Port

Executing a terminal loopback test on a source-node Ethernet port.

Perform a Facility (Line) Loopback on an Intermediate-Node Ethernet Port

Performing a facility loopback test on an intermediate-node Ethernet port.

Perform a Terminal (Inward) Loopback on an Intermediate-Node Ethernet Port

Executing a terminal loopback test on an intermediate-node Ethernet port.

Perform a Facility (Line) Loopback on a Destination-Node Ethernet Port

Performing a facility loopback test on a destination-node Ethernet port.

Perform a Terminal Loopback on a Destination-Node Ethernet Port

Executing a terminal loopback test on a destination-node Ethernet port.

Troubleshooting MXP, TXP, or FC_MR Circuit Paths With Loopbacks

Perform a Facility (Line) Loopback on a Source-Node MXP/TXP/FC_MR Port

Performing a facility loopback test on a source-node MXP/TXP/FC_MR port.

Perform a Terminal (Inward) Loopback on a Source-Node MXP/TXP/FC_MR Port

Executing a terminal loopback test on a source-node MXP/TXP/FC_MR port.

Perform a Facility (Line) Loopback on an Intermediate-Node MXP/TXP/FC_MR Port

Performing a facility loopback test on an intermediate-node MXP/TXP/FC_MR port.

Perform a Terminal (Inward) Loopback on Intermediate-Node MXP/TXP/FC_MR Ports

Executing a terminal loopback test on intermediate-node MXP/TXP/FC_MR ports.

Perform a Facility (Line) Loopback on a Destination-Node MXP/TXP/FC_MR Port

Performing a facility loopback test on a destination-node MXP/TXP/FC_MR port.

Perform a Terminal Loopback on a Destination-Node MXP/TXP/FC_MR Port

Executing a terminal loopback test on a destination-node MXP/TXP/FC_MR port.

Troubleshooting DWDM Circuit Paths With ITU-T G.709 Monitoring

ITU-T G.709 Monitoring in Optical Transport Networks

Overview of ITU-T G.709 monitoring in optical transport networks.

Optical Channel Layer

Description of the optical channel layer within the OTN.

Optical Multiplex Section Layer

Explanation of the optical multiplex section layer in the OTN.

Optical Transmission Section Layer

Description of the optical transmission section layer in the OTN.

Performance Monitoring Counters and Threshold Crossing Alerts

Using PM counters and TCAs for troubleshooting ITU-T G.709 optical networks.

Forward Error Correction

Explanation of Forward Error Correction (FEC) in DWDM spans.

Sample Trouble Resolutions

Sample troubleshooting resolutions using performance monitoring and TCAs.

Using CTC Diagnostics

Card LED Lamp Tests

Verifying card LED operation using the lamp test function in CTC.

Retrieve Diagnostics File Button

Retrieving diagnostic files for troubleshooting from CTC.

Restoring the Database and Default Settings

Restore the Node Database

Procedures for restoring the node database to a previous state.

Restore the Node to Factory Configuration

Restoring the node to its factory default configuration using the reinitialization tool.

PC Connectivity Troubleshooting

PC System Minimum Requirements

Minimum system requirements for PCs running CTC software.

Sun System Minimum Requirements

Minimum system requirements for Sun workstations running CTC software.

Supported Platforms, Browsers, and JREs

Supported platforms, browsers, and Java Runtime Environments for CTC.

Unsupported Platforms and Browsers

Listing of platforms and browsers not supported by CTC.

Unable to Verify the IP Configuration of Your PC

Troubleshooting steps for verifying PC IP configuration for network connectivity.

Browser Login Does Not Launch Java

Resolving issues where the browser does not launch Java for CTC login.

Unable to Verify the NIC Connection on Your PC

Troubleshooting NIC connection problems when the link LED is not illuminated.

Verify PC Connection to the ONS 15454 SDH (ping)

Using the ping command to verify PC connection and TCP/IP connectivity.

The IP Address of the Node is Unknown

Procedures to retrieve the IP address when it is unknown for node login.

CTC Operation Troubleshooting

Unable to Launch CTC Help After Removing Netscape

Resolving issues with launching CTC Help after Netscape removal.

Unable to Change Node View to Network View

Troubleshooting grayed-out nodes or inability to switch to network view in CTC.

Browser Stalls When Downloading CTC JAR Files From TCC2/TCC2P

Resolving browser stalls during CTC JAR file downloads.

CTC Does Not Launch

Troubleshooting CTC application startup failures and error messages.

Slow CTC Operation or Login Problems

Addressing slow CTC operation or login issues, including cache and memory.

Node Icon is Gray on CTC Network View

Troubleshooting gray node icons in CTC Network View, indicating connectivity issues.

CTC Cannot Launch Due to Applet Security Restrictions

Resolving CTC launch errors caused by Java applet security restrictions.

Java Runtime Environment Incompatible

Troubleshooting incompatible Java Runtime Environments (JRE) for CTC.

Different CTC Releases Do Not Recognize Each Other

Resolving incompatibilities between different CTC software releases.

Username or Password Do Not Match

Troubleshooting username or password mismatches for CTC login.

No IP Connectivity Exists Between Nodes

Diagnosing and resolving lack of IP connectivity between network nodes.

DCC Connection Lost

Troubleshooting lost DCC connections and associated EOC alarms.

“Path in Use Error” When Creating a Circuit

Resolving "Path in Use" errors during circuit creation.

Calculate and Design IP Subnets

Guidance on calculating and designing IP subnets for the ONS 15454 SDH.

Ethernet Connections

Troubleshooting broken or malfunctioning Ethernet connections.

VLAN Cannot Connect to Network Device from Untag Port

Resolving VLAN connectivity issues with untagged ports.

Circuits and Timing

STM-N Circuit Transitions to Partial State

Troubleshooting STM-N circuits stuck in a PARTIAL status.

DS3i-N-12 Card Does Not Report MS-AIS From External Equipment

Understanding why the DS3i-N-12 card doesn't report MS-AIS from external equipment.

STM-1 and DCC Limitations

Understanding limitations related to STM-1 and DCC usage.

ONS 15454 SDH Switches Timing Reference

Understanding how the ONS 15454 SDH switches timing references due to problems.

Holdover Synchronization Alarm

Troubleshooting holdover synchronization alarms when clock frequency differs.

Free-Running Synchronization Mode

Understanding the free-running synchronization mode when no reliable reference is available.

Daisy-Chained BITS Not Functioning

Issues with daisy-chaining BITS sources.

Blinking STAT LED after Installing a Card

Troubleshooting blinking STAT LEDs after card installation, indicating POST failure.

Circuits Remain in PARTIAL Status

Resolving circuits that remain in a PARTIAL status.

Fiber and Cabling

Bit Errors Appear for a Traffic Card

Troubleshooting bit errors on traffic cards, possibly due to cabling or optical levels.

Faulty Fiber-Optic Connections

Diagnosing and resolving issues related to faulty fiber-optic connections.

Optical Card Transmit and Receive Levels

Understanding optical card transmit and receive levels for troubleshooting.

Power Supply Problems

Power Consumption for Node and Cards

Information on power consumption for nodes and cards.

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