- Cisco ONS 15454 Manual
Table Of Contents
- Contents
- About This Manual
- Hardware Installation
- 1.1 Installation Overview
- 1.2 Installation Equipment
- 1.3 Rack Installation
- 1.4 Front Door Access
- 1.5 Backplane Access
- 1.6 EIA Installation
- 1.7 Fan-Tray Assembly Installation
- 1.8 Power and Ground Installation
- 1.9 Alarm, Timing, LAN, and Craft Pin Connections
- 1.10 Coaxial Cable Installation
- 1.11 DS-1 Cable Installation
- 1.12 Card Installation
- 1.13 Fiber-Optic Cable Installation
- 1.14 Cable Routing and Management
- 1.15 Ferrite Installation
- 1.16 ONS 15454 Assembly Specifications
- 1.16.1 Bandwidth
- 1.16.2 Slot Assignments
- 1.16.3 Cards
- 1.16.4 Configurations
- 1.16.5 Cisco Transport Controller
- 1.16.6 External LAN Interface
- 1.16.7 TL1 Craft Interface
- 1.16.8 Modem Interface
- 1.16.9 Alarm Interface
- 1.16.10 EIA Interface
- 1.16.11 Nonvolatile Memory
- 1.16.12 BITS Interface
- 1.16.13 System Timing
- 1.16.14 Power Specifications
- 1.16.15 Environmental Specifications
- 1.16.16 Dimensions
- 1.17 Installation Checklist
- 1.18 ONS 15454 Software and Hardware Compatibility Matrix
- Software Installation
- 2.1 Installation Overview
- 2.2 Computer Requirements
- 2.3 Running the CTC Setup Wizard
- 2.4 Connecting PCs to the ONS 15454
- 2.5 Logging into the ONS 15454
- 2.6 Working with the CTC Window
- 2.6.1 Node View
- 2.6.2 Network View
- 2.6.2.1 CTC Node Colors
- 2.6.2.2 Network View Tasks
- 2.6.2.3 Creating Domains
- 2.6.2.4 Changing the Network View Background Color
- Procedure: Modify the Network or Domain Background Color
- 2.6.2.5 Changing the Network View Background Image
- Procedure: Change the Network View Background Image
- Procedure: Add a Node to the Current Session
- 2.6.3 Card View
- 2.7 CTC Navigation
- 2.8 Viewing CTC Table Data
- 2.9 Printing and Exporting CTC Data
- 2.10 Displaying CTC Data in Other Applications
- Node Setup
- IP Networking
- 4.1 IP Networking Overview
- 4.2 ONS 15454 IP Addressing Scenarios
- 4.2.1 Scenario 1: CTC and ONS 15454s on Same Subnet
- 4.2.2 Scenario 2: CTC and ONS 15454s Connected to Router
- 4.2.3 Scenario 3: Using Proxy ARP to Enable an ONS 15454 Gateway
- 4.2.4 Scenario 4: Default Gateway on CTC Computer
- 4.2.5 Scenario 5: Using Static Routes to Connect to LANs
- 4.2.6 Scenario 6: Static Route for Multiple CTCs
- 4.2.7 Scenario 7: Using OSPF
- 4.3 Viewing the ONS 15454 Routing Table
- SONET Topologies
- 5.1 Before You Begin
- 5.2 Bidirectional Line Switched Rings
- 5.3 Unidirectional Path Switched Rings
- 5.4 Subtending Rings
- 5.5 Linear ADM Configurations
- 5.6 Path-Protected Mesh Networks
- Circuits and Tunnels
- Card Provisioning
- 7.1 Performance Monitoring Thresholds
- 7.2 Provisioning Electrical Cards
- 7.3 Provisioning Optical Cards
- 7.4 Provisioning IPPM
- 7.5 Provisioning the Alarm Interface Controller
- 7.6 Converting DS-1 and DS-3 Cards From 1:1 to 1:N Protection
- Performance Monitoring
- 8.1 Using the Performance Monitoring Screen
- 8.2 Changing Thresholds
- 8.3 Enabling Intermediate-Path Performance Monitoring
- 8.4 Pointer Justification Count Parameters
- 8.5 Performance Monitoring for Electrical Cards
- 8.6 Performance Monitoring for Optical Cards
- Ethernet Operation
- 9.1 Ethernet Cards
- 9.2 Multicard and Single-Card EtherSwitch
- 9.3 Ethernet Circuit Configurations
- 9.4 VLAN Support
- 9.5 Spanning Tree (IEEE 802.1D)
- 9.6 Ethernet Performance and Maintenance Screens
- 9.7 Remote Monitoring Specification Alarm Thresholds
- Alarm Monitoring and Management
- 10.1 Overview
- 10.2 Viewing ONS 15454 Alarms
- 10.3 Alarm Profiles
- 10.4 Suppressing Alarms
- SNMP
- Circuit Routing
- Regulatory and Compliance Requirements
- Regulatory Compliance
- Japan Approvals
- Installation Warnings
- DC Power Disconnection Warning
- DC Power Connection Warning
- Power Supply Disconnection Warning
- Outside Line Connection Warning
- Class 1 Laser Product Warning
- Class I and Class 1M Laser Warning
- Restricted Area Warning
- Ground Connection Warning
- Qualified Personnel Warning
- Invisible Laser Radiation Warning (other versions available)
- More Than One Power Supply
- Unterminated Fiber Warning
- Laser Activation Warning
- Acronyms
- Glossary
- index
5-3
Cisco ONS 15454 Installation and Operations Guide
November 2001
Chapter 5 SONET Topologies
Bidirectional Line Switched Rings
The SONET K1 and K2 bytes carry the information that governs BLSR protection switches. Each BLSR
node monitors the K bytes to determine when to switch the SONET signal to an alternate physical path.
The K bytes communicate failure conditions and actions taken between nodes in the ring.
If a break occurs on one fiber, working traffic targeted for a node beyond the break switches to the
protect bandwidth on the second fiber. The traffic travels in reverse direction on the protect bandwidth
until it reaches its destination node. At that point, traffic is switched back to the working bandwidth.
Figure 5-2 shows a sample traffic pattern on a four-node, two-fiber BLSR.
Figure 5-2 Four-node, two-fiber BLSR sample traffic pattern
Figure 5-3 shows how traffic is rerouted following a line break between Node 0 and Node 3.
• All circuits originating on Node 0 carried to Node 2 on Fiber 2 are switched to the protect bandwidth
of Fiber 1. For example, a circuit carried on STS-1 on Fiber 2 is switched to STS-25 on Fiber 1. A
circuit carried on STS-2 on Fiber 2 is switched to STS-26 on Fiber 1. Fiber 1 carries the circuit to
Node 3 (the original routing destination). Node 3 switches the circuit back to STS-1 on Fiber 2
where it is routed to Node 2 on STS-1.
• Circuits originating on Node 2 that were normally carried to Node 0 on Fiber 1 are switched to the
protect bandwidth of Fiber 2 at Node 3. For example, a circuit carried on STS-2 on Fiber 1 is
switched to STS-26 on Fiber 2. Fiber 2 carries the circuit to Node 0 where the circuit is switched
back to STS-2 on Fiber 1 and then dropped to its destination.
Node 0
Node 1
Traffic flow
Node 2
Node 3 OC-48 Ring
Fiber 1
Fiber 2
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