Tài liệu Managing Your Network with HP docx

Managing Your Network with HP OpenView Network Node Manager Windows NT®, Windows® 2000, HP-UX, and Solaris Manufacturing Part Number: J1240-90058 March 2001 © Copyright 2001 Hewlett-Packard Company. 2 Legal Notices Hewlett-Packard makes no warranty of any kind with regard to this manual, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. Hewlett-Packard shall not be held liable for errors contained herein or direct, indirect, special, incidental or consequential damages in connection with the furnishing, performance, or use of this material. Warranty. A copy of the specific warranty terms applicable to your Hewlett- Packard product and replacement parts can be obtained from your local Sales and Service Office. Restricted Rights Legend. All rights are reserved. No part of this document may be photocopied, reproduced, or translated to another language without the prior written consent of Hewlett-Packard Company. The information contained in this document is subject to change without notice. Use, duplication or disclosure by the U.S. Government is subject to restrictions as set forth in subparagraph (c) (1) (ii) of the Rights in Technical Data and Computer Software clause at DFARS 252.227-7013 for DOD agencies, and subparagraphs (c) (1) and (c) (2) of the Commercial Computer Software Restricted Rights clause at FAR 52.227- 19 for other agencies. HEWLETT-PACKARD COMPANY 3404 E. Harmony Road Fort Collins, CO 80528 U.S.A. Use of this manual and flexible disk(s), tape cartridge(s), or CD-ROM(s) supplied for this pack is restricted to this product only. Additional copies of the programs may be made for security and back-up purposes only. Resale of the programs in their present form or with alterations, is expressly prohibited. Copyright Notices. © Copyright1983-2001 Hewlett-Packard Company, all rights reserved. Reproduction, adaptation, or translation of this document without prior written permission is prohibited, except as allowed under the copyright laws. 3 Contains software from AirMedia, Inc. © Copyright 1996 AirMedia, Inc. Trademark Notices Java™ is a U.S. trademark of Sun Microsystems, Inc. Microsoft® is a U.S. registered trademark of Microsoft Corporation. Windows NT® is a U.S. registered trademark of Microsoft Corporation. Windows® 2000 is a U.S. registered trademark of Microsoft Corporation. Windows® and MS Windows® are U.S. registered trademarks of Microsoft Corporation. Netscape™ and Netscape Navigator™ are U.S. trademarks of Netscape Communications Corporation. Oracle® is a registered U.S. trademark of Oracle Corporation, Redwood City, California. Oracle7™ is a trademark of Oracle Corporation, Redwood City, California. OSF/Motif® and Open Software Foundation® are trademarks of Open Software Foundation in the U.S. and other countries. Pentium® is a U.S. registered trademark of Intel Corporation. UNIX® is a registered trademark of The Open Group. 4 Contents 5 Conventions Contact Information 1. Network Management with NNM IT Service Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 How Network Node Manager Can Help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 Moving to Proactive Network Management. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 Poll for Network Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 Watch for Events. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 Network Management Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 Fault/Problem Management. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 Performance Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 Configuration and Change Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 Accounting Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 Security Management. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 Summary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 Additional Reading Material. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 2. How Does NNM Work? Collecting Critical Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 SNMP’s Network Management Model. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 Desktop Management Interface (DMI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64 Automatic Discovery and Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 How IP Discovery and Layout Work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 How IPX Discovery and Layout Work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66 Interactions Between IPX Discovery and IP Discovery . . . . . . . . . . . . . . . . . . . . . . . 67 Level 2 Discovery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68 Event Correlation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70 NNM’s Databases. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71 Operational Databases. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71 Data Warehouse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 3. Resources Available While Learning NNM Resources Included with NNM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75 Computer Based Training . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75 Contents 6 NNM Online Help System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75 Tip of the Day . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78 Manuals: Printed and Online. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78 Release Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79 Reference Pages (Manpages) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 The contrib Directory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82 The support Directory. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82 White Papers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83 Resources and Services Available Through HP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84 HP Web Sites. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84 HP Consulting Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84 HP Education . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85 HP Product Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85 OpenView Forum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85 Summary of HP OpenView Web Sites . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86 4. Planning Your NNM Configuration Budgeting Time for Planning and Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89 Time for Planning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89 Time for Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89 Taking Over NNM from Someone Else. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90 Understanding the Network Information Needs of Your Organization . . . . . . . . . . . . 91 Who Needs What Information? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91 Work Sheet for Planning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93 Knowing Your Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95 Deciding to Manage or Not to Manage Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95 Starting with a Well-Configured Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98 Consistent IP Addressing Scheme. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98 Consistent Name Resolution Scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99 SNMP Agents and Their MIBs Configured. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 DMI Service Providers and Their MIFs Configured. . . . . . . . . . . . . . . . . . . . . . . . . 102 5. Initial Network Discovery: Options and Troubleshooting Install Network Node Manager (if you have not already done so) . . . . . . . . . . . . . . . 108 Installing IPX Transport Software (Windows NT/2000 only) . . . . . . . . . . . . . . . . . 108 Establishing Universal Pathnames (UNIX only) . . . . . . . . . . . . . . . . . . . . . . . . . . . 108 Contents 7 Discover the Network Let NNM Do It. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111 Start the NNM Services (background processes) . . . . . . . . . . . . . . . . . . . . . . . . . . . 113 Make Sure NNM’s Services Are Successfully Running . . . . . . . . . . . . . . . . . . . . . . 114 Open NNM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114 Configure an Inventory Report . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115 Let NNM Run Over Night to Populate the Maps . . . . . . . . . . . . . . . . . . . . . . . . . . . 115 Verify the Accuracy of the Initial Discovery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117 Printing the Inventory Report . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117 Viewing the Properties of Your Network Configuration. . . . . . . . . . . . . . . . . . . . . . 119 Finding Specific Devices on the Map. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121 Interactively Expand/Limit Your Management Domain . . . . . . . . . . . . . . . . . . . . . . . 125 Adding Networks to Your Management Domain . . . . . . . . . . . . . . . . . . . . . . . . . . . 125 Managing an Unmanaged Network Device. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126 Unmanaging a Managed Network Device. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126 Automatically Expand Your Management Domain . . . . . . . . . . . . . . . . . . . . . . . . . . . 127 Create a Seed File Specifying Multiple IP Networks to Manage. . . . . . . . . . . . . . . 128 Use loadhosts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130 Expand the IPX Hop Count (Windows NT/2000 only) . . . . . . . . . . . . . . . . . . . . . . . 131 Automatically Limit Your Management Domain. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132 Create a netmon.noDiscover File to Exclude Devices. . . . . . . . . . . . . . . . . . . . . . . . 133 Use loadhosts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135 Create a Discovery Filter Identifying Which Devices to Include. . . . . . . . . . . . . . . 136 Modify the oid_to_type File to Unmanage Devices by Type. . . . . . . . . . . . . . . . . . . 137 Limit the IPX Hop Count (Windows NT/2000 only) . . . . . . . . . . . . . . . . . . . . . . . . . 138 Troubleshooting Discovery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139 IP Discovery and Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139 General IP Suggestions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152 IPX Discovery and Layout (Windows NT/2000 only) . . . . . . . . . . . . . . . . . . . . . . . . 161 Stop Everything and Start Discovery Over Again . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169 6. Preserve Your Sanity: Backup and Polling Configuration Backup/Restore to Protect Your Investment of Time. . . . . . . . . . . . . . . . . . . . . . . . . . 173 How Does the Backup Work? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174 Backing Up and Archiving All Critical Files. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175 Restoring All of NNM (procedures/options). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179 Restoring Part of NNM (procedures/options) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181 Troubleshooting Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182 Contents 8 Custom Scripts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184 Controlling the Amount of Traffic Generated by NNM . . . . . . . . . . . . . . . . . . . . . . . . 186 Status Polling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189 Configuration-Check Polling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191 Connector Topology Polling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192 New Node Discovery Polling (IP, Level-2, and IPX) . . . . . . . . . . . . . . . . . . . . . . . . . 192 Secondary Failure Polling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193 Fine-Tuning the Polling Services. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193 Watching NNM’s Polling Queue. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195 Running NNM Without Network Polling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195 7. Map Making Fundamentals Maps versus Submaps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199 Maps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199 Submaps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200 Understanding Objects versus Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203 Objects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204 Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206 8. Map Customization Putting It All Together. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 212 Which Maps for Which Users. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 212 Copying the Default Map. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215 Your Map Strategy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215 Controlling the Display of Devices Attached to Switches or Bridges . . . . . . . . . . . . . 217 Turning On Star Configuration for Attached Devices . . . . . . . . . . . . . . . . . . . . . . . 218 Turning Off Star Configuration for Attached Devices . . . . . . . . . . . . . . . . . . . . . . . 219 Giving Your Network Symbols Meaningful Names . . . . . . . . . . . . . . . . . . . . . . . . . . . 221 Turning Connection Labels on or off. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 223 Configuring Trunking and Meshing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225 Establishing Submap Persistence Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 229 By Logical-level of Your Network’s Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 230 By Presence of Specific Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 230 Controlling Which Devices Appear on the Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 232 Creating a Map Filter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 232 Using the Hide Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 233 Contents 9 Changing/Adding Object Attribute Fields . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 235 Changing the Value in an Attribute Field. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 236 Changing Symbol Type to Switch Attribute Sets . . . . . . . . . . . . . . . . . . . . . . . . . . . 237 Adding Attribute Fields in the Object Database. . . . . . . . . . . . . . . . . . . . . . . . . . . . 238 Making the Maps Look Like Your World . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240 Controlling the Placement of the Symbols on Your Map . . . . . . . . . . . . . . . . . . . . . 241 Adding Your Own Submaps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 244 Customizing the Internet Level of Your Network Map . . . . . . . . . . . . . . . . . . . . . . 247 Customizing Network-, Segment-, or Node-Level Submaps . . . . . . . . . . . . . . . . . . 255 Background Graphics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 259 Creating Your Own Map Symbols. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 262 What Is a Symbol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 262 Specifying the Placement and Size of the Submap Windows . . . . . . . . . . . . . . . . . . . 265 Window Geometry. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 265 Submap Overlay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 265 Miscellaneous Configuration Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 267 Windows NT/2000 Operating System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 267 UNIX Operating Systems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 268 Controlling Symbol Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 269 Object Status Colors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 269 Compound Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 273 Creating New NNM Features to Meet Your Team’s Needs . . . . . . . . . . . . . . . . . . . . . 277 Adding to NNM’s Menu Structure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 277 Creating Executable Symbols with Custom Behaviors . . . . . . . . . . . . . . . . . . . . . . 278 Additional Views . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 281 Node View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 281 CDP View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 283 Connected Nodes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 284 9. Controlling Map Access Establishing and Communicating a Process for Requesting Changes to the Map . . 288 Not Allowing Team Members to Make Changes. . . . . . . . . . . . . . . . . . . . . . . . . . . . 288 Allowing Team Members to Make Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 288 Setting User Preferences Within NNM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 289 Using Command Line Startup Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 291 Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 291 Examples. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 292 Using Operating-System Level File Permissions for the Map . . . . . . . . . . . . . . . . . . 294 Contents 10 Windows NT/2000: Setting Permissions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 295 UNIX: Setting Permissions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 296 Using the Context Feature to Control Menu Choices . . . . . . . . . . . . . . . . . . . . . . . . . 298 Using NNM’s Predefined Contexts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 298 Creating Your Own Contexts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 299 Using ARF Files to Control Menu Choices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 301 ARF File Modifications Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 307 Allowing Others to View NNM from Many Computers. . . . . . . . . . . . . . . . . . . . . . . . 319 Remote Consoles. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 319 NNM’s Web Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 320 Microsoft Terminal Services. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 320 Closing All Current Sessions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 321 10. Keeping Up with Events on Your Network: Beyond the Maps How NNM’s Event System Works. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 325 SNMPv1 Traps / SNMPv2c Traps and Informs . . . . . . . . . . . . . . . . . . . . . . . . . . . . 327 DMI Events (Indications). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 329 Alarm Browser Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 331 Displaying Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 332 Alarm Categories/Alarm Browser Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 333 Acknowledging Alarms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 336 Filtering Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 336 Deleting Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 338 NNM’s Map and the Alarm Browser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 339 Specifying Additional Actions on Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 341 Configuring the Alarm Browser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 342 Controlling the Size of the Event Database . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 343 Controlling the Size of the Alarm Browser’s State File . . . . . . . . . . . . . . . . . . . . . . 344 Controlling How Many Alarms to Delete Automatically . . . . . . . . . . . . . . . . . . . . . 345 Copy or Restore the Alarm Browser’s State File. . . . . . . . . . . . . . . . . . . . . . . . . . . . 347 Controlling How the Alarm Browser Looks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 348 Assigning Alarm Categories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 348 NNM’s Event Correlation System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 351 Correlation Concepts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 352 Recommendations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 354 NNM’s Built-In Correlations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 354 [...]... information (page 39) 25 Understanding Networking Concepts To use HP OpenView Network Node Manager (NNM) successfully, you need to have a good understanding of networking concepts, hardware, protocols, and architecture In addition to general networking knowledge, you also need to be familiar with your specific network — the operating system platforms on your network, how the network is currently configured,... email it to: ovdoc@fc .hp. com If you encounter serious errors in the documentation that impair your ability to use NNM, please contact the HP Response Center or your support representative so that your feedback can be entered into CHARTS (the HP Change Request Tracking System) Training Information For information on current HP OpenView training available, see the HP OpenView World Wide... can be found on the HP OpenView World Wide Web site at: http://openview .hp. com/ Documentation Feedback Your comments on and suggestions for the documentation help us understand your needs and better meet them You can provide feedback about documentation via the HP documentation site at: http://www.docs .hp. com Or you can fill out the form provided in electronic form with NNM: • Windows... multiport repeater, and can be used to increase overall network size and number of nodes on a single segment A hub allows you to isolate faults within the subnet and add stations to a segment without disrupting the entire network • Bridges Bridges operate at Layer 2, the data link layer A bridge is used to allow networks with different physical signaling, but with compatible data link addressing schemes, to... The application layer provides the software for network services, such as file transfer, remote login, remote execution, e-mail, etc It provides the interface between user programs and the network Network Management Protocols You should be familiar with the terminology and concepts of network management protocols, specifically the following SNMPv1 (Simple Network Management Protocol version 1) SNMP is... know in order to be successful with Network Node Manager This chapter does not attempt to provide full details about these topics If you need more information, check the references provided at the end of the chapter The following topics are covered in this chapter: • Networking concepts, including an overview of the OSI model and network management protocols (page 26) • Network hardware, the management... Setting Up the HP OpenView Web Role Configuration Files for the HP OpenView Web The HP OpenView Launcher Launcher User Interface Configuring the Launcher HP OpenView Network Presenter ... switch, which operates at Layer 3, and combines the intelligence of a router with the efficiency of a switch, thus routing data at higher speeds • Routers Routers operate at Layer 3, the network layer A router is used to connect two networks with different technologies, and provides an intelligent means of transferring packets from one network to the other A router also forwards traffic among multiple hubs... HP OpenView Network Presenter Starting the Network Presenter The Network Presenter Window Network Presenter versus NNM on a Management Station Configuring the Network Presenter Using Symbol Registration Files and Bitmaps... enhanced security, new MIB objects, and a way to co-exist with SNMPv1 SNMPv2C is useful for the retrieval of large amounts of management information using fewer network resources UDP (User Datagram Protocol) UDP is a protocol that allows an application program on one machine to exchange datagrams with an application program on another machine, without acknowledgments or guaranteed delivery UDP operates . Managing Your Network with HP OpenView Network Node Manager Windows NT®, Windows® 2000, HP- UX, and Solaris Manufacturing. . . . . . 125 Managing an Unmanaged Network Device. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126 Unmanaging a Managed Network Device.