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IBM RackSwitch G8000 User Manual

IBM RackSwitch G8000
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12 RackSwitch G8000: Application Guide
Chapter 22. OSPF. . . . . . . . . . . . . . . . . . . . . . . . 257
OSPFv2 Overview . . . . . . . . . . . . . . . . . . . . . . . . 257
Types of OSPF Areas . . . . . . . . . . . . . . . . . . . . . 257
Types of OSPF Routing Devices. . . . . . . . . . . . . . . . . 258
Neighbors and Adjacencies. . . . . . . . . . . . . . . . . . . 259
The Link-State Database. . . . . . . . . . . . . . . . . . . . 259
The Shortest Path First Tree . . . . . . . . . . . . . . . . . . 260
Internal Versus External Routing. . . . . . . . . . . . . . . . . 260
OSPFv2 Implementation in IBM N/OS . . . . . . . . . . . . . . . . 261
Configurable Parameters . . . . . . . . . . . . . . . . . . . 261
Defining Areas. . . . . . . . . . . . . . . . . . . . . . . . 262
Assigning the Area Index . . . . . . . . . . . . . . . . . . 262
Using the Area ID to Assign the OSPF Area Number . . . . . . . 263
Attaching an Area to a Network . . . . . . . . . . . . . . . 263
Interface Cost . . . . . . . . . . . . . . . . . . . . . . . . 264
Electing the Designated Router and Backup . . . . . . . . . . . . 264
Summarizing Routes . . . . . . . . . . . . . . . . . . . . . 264
Default Routes. . . . . . . . . . . . . . . . . . . . . . . . 265
Virtual Links. . . . . . . . . . . . . . . . . . . . . . . . . 266
Router ID . . . . . . . . . . . . . . . . . . . . . . . . . . 266
Authentication . . . . . . . . . . . . . . . . . . . . . . . . 267
Configuring Plain Text OSPF Passwords . . . . . . . . . . . . 267
Configuring MD5 Authentication . . . . . . . . . . . . . . . 268
Host Routes for Load Balancing . . . . . . . . . . . . . . . . . 269
Loopback Interfaces in OSPF . . . . . . . . . . . . . . . . . . 269
OSPF Features Not Supported in This Release . . . . . . . . . . . 270
OSPFv2 Configuration Examples . . . . . . . . . . . . . . . . . . 270
Example 1: Simple OSPF Domain . . . . . . . . . . . . . . . . 271
Example 2: Virtual Links . . . . . . . . . . . . . . . . . . . . 273
Example 3: Summarizing Routes . . . . . . . . . . . . . . . . 277
Verifying OSPF Configuration . . . . . . . . . . . . . . . . . . 278
OSPFv3 Implementation in IBM N/OS . . . . . . . . . . . . . . . . 279
OSPFv3 Differences from OSPFv2. . . . . . . . . . . . . . . . 279
OSPFv3 Requires IPv6 Interfaces . . . . . . . . . . . . . . 279
OSPFv3 Uses Independent Command Paths . . . . . . . . . . 279
OSPFv3 Identifies Neighbors by Router ID . . . . . . . . . . . 280
Other Internal Improvements . . . . . . . . . . . . . . . . 280
OSPFv3 Limitations. . . . . . . . . . . . . . . . . . . . . . 280
OSPFv3 Configuration Example . . . . . . . . . . . . . . . . . 280
Part 6: High Availability Fundamentals . . . . . . . . . . . . . . . 283
Chapter 23. Basic Redundancy . . . . . . . . . . . . . . . . . . 285
Trunking for Link Redundancy . . . . . . . . . . . . . . . . . . . 285
Virtual Link Aggregation. . . . . . . . . . . . . . . . . . . . . . 285
Hot Links . . . . . . . . . . . . . . . . . . . . . . . . . . . 286
Forward Delay . . . . . . . . . . . . . . . . . . . . . . . . 286
Preemption . . . . . . . . . . . . . . . . . . . . . . . . . 286
FDB Update. . . . . . . . . . . . . . . . . . . . . . . . . 286
Configuration Guidelines . . . . . . . . . . . . . . . . . . . . 286
Configuring Hot Links . . . . . . . . . . . . . . . . . . . . . 287

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IBM RackSwitch G8000 Specifications

General IconGeneral
BrandIBM
ModelRackSwitch G8000
CategoryNetwork Router
LanguageEnglish

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