Avaya Configuring Dial Services Bedienungsanleitung Seite 154
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Configuring Dial Services
6-20
117353-B Rev. 00
PPP Multilink
Multilink is a feature of PPP that you can enable for individual PPP links. Links
are logical communication channels between two routers. A typical link includes
one ISDN B channel, one dial-up modem connection, and a leased T1 line.
Multilink is important for demand circuits that use bandwidth-on-demand service
because it enables you to
• Group lines of different speeds
• Distribute traffic more evenly among the lines
• Restore packet sequence
• Monitor traffic volume (for bandwidth-on-demand service)
These features enable the router to add bandwidth to relieve a congested demand
circuit.
When you enable multilink, you can combine a set of lines between two routers
into a single bundle. Each bundle belongs to a separate circuit. Multilink
distributes traffic over each logical line in a bundle in an amount proportional to
the bandwidth of the link. Once data reaches the destination router, multilink
resequences packets arriving on different lines.
For ISDN lines, you can manage the allocation of bandwidth in a multilink bundle
by enabling the PPP Bandwidth Allocation Protocol (BAP). For more information
about this protocol, see Chapter 8, “Bandwidth-on-Demand Implementation
Notes.”
For more information about PPP multilink, see Configuring PPP Services.
Protocol Prioritization
When you configure a router, you can prioritize the different types of traffic sent
across a synchronous line. This process is called protocol prioritization. Being
able to prioritize traffic is important for your time-sensitive applications.
For example, a user at Router A participating in a Telnet session with Router B
requires a more immediate response than a user at Router A performing a file
transfer with Router B.
- Configuring 1
- Dial Services 1
- Trademarks 2
- Restricted Rights Legend 2
- Statement of Conditions 2
- Contents 5
- 117353-B Rev. 00 10
- About This Guide 23
- Before You Begin 24
- Conventions 24
- Acronyms 25
- Bay Networks Customer Service 27
- How to Get Help 27
- Chapter 1 29
- Dial Services Overview 29
- How to Use This Guide 30
- Bay Networks Dial Services 31
- Dial-on-Demand Service 33
- Demand Lines and Pools 34
- Demand Circuit Protocols 36
- Activating Demand Circuits 38
- Terminating Demand Circuits 39
- Dial Backup Service 42
- Figure 1-8 44
- Backup Lines and Pools 46
- Activating the Backup Line 48
- Bandwidth-on-Demand Service 50
- Terminating Secondary Lines 54
- Chapter 2 57
- Starting Dial Services 57
- Setting Up a Dial Service 58
- Appendix A of this guide 61
- (Figure 2-1) 61
- Configuring Line Pools 62
- Configuring BRI Lines 64
- Configuring PRI Lines 66
- Configuring WAN Line 67
- Services 67
- Adding ISDN Lines to a Pool 68
- Configuring Circuits 70
- Enabling a Protocol 73
- Creating Dial Backup Circuits 74
- Specifying the Backup Mode 75
- Creating Bandwidth Circuits 77
- Specifying the Bandwidth Mode 78
- Chapter 3 87
- Starting Dial Backup 87
- Configuring WAN Line Services 89
- DS0036A 91
- Create a Dial Object 94
- Create a Backup Line Pool 95
- Add a Backup Line to the Pool 96
- Configure BRI Lines 97
- Configure PRI Lines 99
- Specify the ISDN Switch Type 100
- Configuring Dial Services 102
- What to Do Next 105
- Chapter 4 107
- ISDN Overview 107
- ISDN Standards 108
- Primary Rate Interface 109
- The D Channel 109
- Figure 4-3. LAPD Frame 110
- ISDN Interfaces 111
- Reference Points 112
- Chapter 5 115
- Implementation Notes 115
- Types of Authentication 116
- Asynchronous PPP 120
- RADIUS Accounting Services 123
- ISDN Services 123
- Incoming Call Filtering 129
- Rate Adaption 130
- Example 2 131
- Chapter 6 135
- How Standby Circuits Work 137
- Callback 142
- Configuring Callback 143
- Demand Circuit Groups 145
- Static Routes 149
- Dial Optimized Routing 149
- Data Compression 153
- PPP Multilink 154
- Protocol Prioritization 154
- Chapter 7 157
- Bandwidth for Backup Circuits 158
- Chapter 8 163
- Multilink Fragmentation 166
- How BAP Works 167
- Chapter 9 173
- Customizing Line Pools 173
- Modifying Line Pools 174
- Changing Pool IDs 175
- Deleting Pools 175
- For example: 176
- To delete any type of pool: 176
- Using the BCC 177
- Using Site Manager 178
- Modifying the Line Priority 184
- Using Modem Factory Defaults 186
- Selecting a Modem Type 194
- Remotely Resetting the Modem 200
- Enabling RFC 1661 Compliance 205
- Modifying ISDN Configurations 206
- Modifying the Adaption Rate 213
- To modify the X.25 circuit: 224
- Deleting BRI 228
- Deleting PRI 229
- Chapter 10 231
- Customizing Demand Circuits 231
- Removing Demand Circuits 246
- Chapter 11 247
- Customizing Backup Circuits 247
- <ID_number> 249
- <mode> 249
- Frame Relay Services 250
- Specifying the Redial Count 263
- (continued) 265
- To remove backup service: 270
- Chapter 12 271
- Chapter 13 281
- Customizing Phone Lists 281
- Caution: 282
- Local Phone Lists 283
- Adding Phone Numbers 284
- To set the adaption rate: 293
- Changing the Remote Pool Type 294
- To set the connection type: 296
- Enabling PRI Multirate 297
- To enable PRI multirate: 298
- To create a local phone list: 305
- Chapter 14 309
- Customizing Caller Resolution 309
- Appendix A 315
- Dial Service Parameters 315
- Pool ID Parameter 318
- External Modem Parameters 323
- V.34 Modem Parameters 329
- ISDN Switch Parameters 334
- BRI Configuration Parameters 341
- Relay window is similar 346
- Local Phone Number Parameters 403
- Appendix B 423
- Configuration Examples 423
- Dial-on-Demand with PPP 424
- Table B-3. IP Parameters 426
- Configuration of Router 1 429
- Configuration of Router 2 429
- Demand Circuit Configuration 431
- Table B-13. IP Parameters 432
- Appendix C 453
- Show Commands for Dial Backup 453
- Sample Output 454
- Online Help for show Commands 454
- Commands for Dial Backup 455
- show dial backup summary 456
- >] [-circuit < 457
- Line Information: (Serial) 458
- Appendix D 465
- Ordering PRI Lines 466
- Appendix E 467
- (continued) 469
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