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Cisco WAN Modeling Tools Guide
OL-10426-01, Rev. A0
Chapter 5 NMT Execute Commands
Fail Analysis Command
Fail Analysis Command
Selecting Fail Analysis from the Execute menu allows you to create a situation where one or more lines
fail. You can also generate a situation where the lines are failed one at a time (see the Simulate All menu
choice). By failing a line, you can force the NMT to create alternative routes; the NMT does this by using
the Automatic Routing Management algorithm.
Using this algorithm, the NMT can reveal whether network links have enough extra bandwidth,
according to values in the configuration, to support extra traffic if one or several links go down. To
conduct a fail analysis, you must first select Route or Optimize from the Execute menu.
The Fail Analysis submenu has the following choices:
• Fail: Fails one or more connections in the network. A location can be a node, card, or port. Failing
a port will fail the link using that port.
Note In this case, the HELP key is useful guide. Enter HELP once to select the site. Enter Help a
second time to select a port.
• Alternate Route—Attempts to reroute the connections after failing the network locations specified
above. Its output results to the following tables in the Display menu: Total Links Load, Routes,
and No Routes.
• Results—Displays reports that summarizes the alternative routes from the above reroute.
• Generate—Generate a file with the reports from above.
• Simulate All—Automatically fails each link, card, site, or port, and produces a report. When you
select Simulate All, you are asked to enter a name for the report; the NMT fails each element one
at a time, and you can display the report by selecting View from the Report menu.
• View—View any failure analysis report from a disk.
• Options—Allows you to specify whether the system should ignore IMATM trunks or virtual trunks
when performing a fail analysis.
If all connections do not reroute as a result of link failure or a set of link failures, add additional capacity
to the links by increasing the size of existing links, the link count, or adding new links. You can use TPI
and WANDL to help design a resilient topology.
Build Sites Command
Selecting Build Sites from the Execute menu allows you to provision the sites without routing the
connections. You have the option of building all sites or one specific site. If all links and connections are
not provisioned, the command will display link and connection ends that could not be built.
- Customer Order Number: 1
- Text Part Number: OL-10426-01 1
- CONTENTS 3
- 3 Using the NMT 3-1 4
- 5 NMT Execute Commands 5-1 5
- 6 NMT Reports 6-1 5
- 8 NMT Map 8-1 6
- 11 SpreadSheet Interface 11-1 7
- Contents 8
- Obtaining Documentation 10
- Documentation Feedback 11
- Submitting a Service Request 13
- Functionality of the NMT 18
- Gaps 21
- Data Translation Tools 22
- System Requirements 23
- Installing the NMT 24
- Creating a Working Directory 25
- Installing the NMT 26
- Upgrading the NMT Software 28
- Starting the NMT 28
- Removing NMT 29
- Removing Sub-applications 31
- Using the NMT 33
- NMT Menu Bar 34
- File Menu 35
- Configure Menu 36
- Chapter 3 Using the NMT 37
- File Menu 37
- Utilities 38
- Edit Options 38
- Display Menu 39
- Report Menu 40
- Keyboard Commands 41
- Table 3-1 Sun Key Assignments 42
- Key Function Description 42
- Modeling Processes 43
- Error Checking 44
- Troubleshooting NMT 45
- Troubleshooting NMT 46
- General Table Information 47
- Sites Table 48
- Sites Table 49
- Y- for feeder; 50
- N- for router 50
- Links Table 52
- Minimal Link Table Usage 53
- Links Table 54
- Link Special Cases 56
- Voice Table 57
- Voice Table 58
- Data Table 60
- Data Table 61
- Bursty Table 63
- Table 4-8 Bursty Table 64
- Bursty Table 65
- Bursty Table Special Cases 69
- Interface Table 70
- Interface Table 71
- Feeder Table 72
- Card Table 73
- Groups and Network Table 74
- Nodes Table 75
- Network Settings 75
- Network Settings 76
- Model Options 77
- Modeling Implicit Feeders 78
- Feeders 79
- Modeling Explicit Feeders 80
- Obsolete Products 81
- Obsolete Products 82
- FastPAD 84
- Port Concentrator 87
- Tiered Networks 88
- NMT Execute Commands 89
- Preferred and Directed Routes 90
- PNNI Routing 91
- Fail Analysis Command 92
- Build Sites Command 92
- Optimize Command 93
- NMT Command Results 94
- Optimize Command 95
- NMT Reports 97
- Link Load Report 98
- Connection Routes Report 99
- Failed Connections Report 99
- Parts List Report 100
- Using the Map Tool 101
- OL-10426-01, Rev. A0 102
- Chapter 6 NMT Reports 102
- Using the Map Tool 102
- Creating a Graphical Display 103
- NMT Utilities Command Line 105
- NMT Map 107
- Chapter 8 NMT Map 108
- NMT Map Startup 108
- Zooming the Map 112
- Panning the Map 113
- Map Color Coding 113
- NMT Map Main Menu 114
- NMT Map Main Menu 115
- Adding New Groups 116
- Deleting Groups 118
- Saving Your Work 119
- Retrieving Map Data Into NMT 120
- Configuration Extraction Tool 121
- Using the CET 122
- Step 4 This step is optional 123
- Other CET Commands 124
- Troubleshooting CET 125
- Troubleshooting CET 126
- Remote CET Extracts 128
- Remote CET Extracts 129
- Troubleshooting 130
- Probable 131
- Solution 131
- WANDL — Third-Party Interface 133
- WANDL_directory 136
- SpreadSheet Interface 137
- NMT to Microsoft Excel 139
- Microsoft Excel to NMT 140
- Usage Review 141
- SSI TroubleShooting 142
- CND PC Import Utilities 143
- CND PC Import Utilities 144
- CND PC Utilities 146
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