Avaya Configuring Dial Services (308621-14.20 Rev 00) Bedienungsanleitung Seite 250
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Configuring Dial Services
12-14
308621-14.20 Rev 00
Terminating a Failed Connection and Using Another Connection
For applications where there are two paths to the same destination, you can
configure the router to automatically terminate a failed demand circuit and send
the data over the other path to the destination. The router does not terminate the
circuit until it reaches the maximum number of connection attempts, which you
specify using the retry-count parameter (BCC) or the Retry Max parameter (Site
Manager).
Using the BCC
To terminate a failed connection and send data across another path to the same
destination, navigate to the demand-circuit prompt and enter:
auto-demand-termination enabled
The default is disabled.
Enable this parameter when the router continues to advertise a static route over a
demand circuit, but cannot establish a connection over that circuit. The router
terminates the demand circuit, which notifies the routing protocol that the static
routes associated with this circuit are no longer active. The router then uses the
alternative path. To use the auto-demand-termination feature, you must have
already set up an alternative path to the remote destination.
For example, to ensure that data reaches the Boston office, enter:
demand-circuit/to-Boston#
auto-demand-termination enabled
To instruct the router when to reestablish the demand connection after an auto
demand termination, navigate to the demand-circuit prompt and enter:
auto-demand-termination-reset
<integer>
integer
is a number from 1 to 999,999 minutes. The default is 60 minutes.
Specify the amount of time, in minutes, that the router waits before reestablishing
the demand circuit after an auto demand termination. Enter an amount of time that
allows the network to recover or that allows your network administrator to resolve
the problem. After the router reestablishes the demand circuit, the protocols
readvertise the static routes for this demand circuit.
You must enter a value for this parameter if you enabled the
auto-demand-termination
parameter.
- Configuring Dial Services 1
- Trademarks 2
- Restricted Rights Legend 2
- Statement of Conditions 2
- Contents 5
- 308621-14.20 Rev 00 10
- Before You Begin 25
- Text Conventions 26
- Acronyms 27
- Hard-Copy Technical Manuals 30
- How to Get Help 30
- Chapter 1 31
- Dial Services Overview 31
- How to Use This Guide 32
- Nortel Networks Dial Services 33
- Dial-on-Demand Service 35
- Terminating Demand Circuits 36
- Demand Lines and Pools 38
- Demand Circuit Protocols 40
- Dial Backup Service 44
- Activating the Backup Line 45
- Backup Circuit Protocols 46
- time period 49
- Backup Lines and Pools 50
- Bandwidth-on-Demand Service 52
- Terminating Secondary Lines 55
- Chapter 2 59
- Starting Dial Services 59
- Setting Up a Dial Service 60
- (Figure 2-1) 63
- Configuring Line Pools 64
- Configuring BRI Lines 67
- Adding ISDN Lines to a Pool 71
- Configuring Circuits 72
- Enabling a Protocol 76
- Specifying the Backup Mode 78
- Creating Bandwidth Circuits 80
- Specifying the Bandwidth Mode 81
- Chapter 3 91
- <parameter> 93
- BCC prompt (bcc>) 97
- Configuring a Modem Interface 100
- Configuring an ISDN Interface 102
- Configuring PRI Lines 104
- Creating a Line Pool 105
- Adding Lines to the Pool 106
- <mode> 109
- Protocols for Backup Circuits 110
- <string> 111
- What to Do Next 114
- Chapter 4 115
- ISDN Overview 115
- ISDN Standards 116
- Primary Rate Interface 117
- D Channel 117
- Figure 4-3. LAPD Frame 118
- ISDN Interfaces 119
- Reference Points 120
- Chapter 5 123
- Implementation Notes 123
- Types of Authentication 124
- WAN Encryption Protocol 129
- Asynchronous PPP 129
- ISDN Services 133
- Incoming Call Filtering 139
- Calling Line ID Screening 140
- Rate Adaption 143
- Example 2 144
- Chapter 6 147
- Standby Circuits 148
- How Standby Circuits Work 149
- Callback 151
- Configuring Callback 152
- Demand Circuit Groups 153
- Static Routes 155
- Dial Optimized Routing 156
- Traffic Filters 159
- Data Compression 160
- PPP Multilink 160
- Protocol Prioritization 161
- Chapter 7 163
- Bandwidth for Backup Circuits 164
- Chapter 8 169
- Multilink Fragmentation 172
- How BAP Works 173
- Chapter 9 179
- Customizing Line Pools 179
- Changing Pool IDs 180
- Deleting Pools 180
- Using the BCC 181
- Using Site Manager 181
- <integer> 182
- Disabling MRU Compliance 185
- Chapter 10 187
- Customizing Modem Lines 187
- Modifying the Line Priority 191
- Using Modem Factory Defaults 193
- 3 to 34 characters 200
- is enabled or disabled 202
- For example: 202
- Resetting the Modem Remotely 204
- Chapter 11 209
- Customizing ISDN Lines 209
- Modifying the Adaption Rate 218
- Configuring the TEI Type 220
- Configuring the TEI Value 221
- Modifying the BRI T4 Timer 228
- <type> 229
- To modify the X.25 circuit: 231
- Changing the Circuit Name 232
- Modifying the MTU 232
- Chapter 12 237
- Customizing Demand Circuits 237
- Adding a Service Record 241
- To add a service record: 241
- Adding or Modifying PVCs 242
- To add or modify PVCs: 242
- Retrying the Connection 247
- <text-string> 253
- Setting the Inactivity Mode 258
- Configuring Standby Circuits 262
- <failback_mode> 264
- <action> 265
- Enabling Callback 267
- (continued) 270
- E.164 number 271
- Deleting a Schedule 282
- Removing Demand Circuits 289
- Deleting Hot Standby Circuits 290
- Chapter 13 291
- Customizing Backup Circuits 291
- ID_number 293
- <ID_number> 293
- Specifying the Redial Count 307
- (continued) 308
- To remove backup service: 313
- Chapter 14 315
- Chapter 15 325
- Customizing Phone Lists 325
- Local Phone Lists 327
- Adding Phone Numbers 328
- Changing the Remote Pool Type 337
- To set the remote pool type: 338
- Enabling PRI Multirate 340
- can be one of the following: 349
- To create a local phone list: 349
- Chapter 16 353
- Customizing Caller Resolution 353
- Configuring the CHAP Secret 356
- Configuring the PAP Password 356
- Appendix A 361
- Site Manager Parameters 361
- Caution: 362
- Pool ID Parameter 364
- External Modem Parameters 369
- V.34 Modem Parameters 375
- ISDN Switch Parameters 380
- BRI Configuration Parameters 388
- Figure A-11 418
- Local Phone Number Parameters 454
- Appendix B 475
- Configuration Examples 475
- Dial-on-Demand with PPP 476
- Demand Circuit Configuration 481
- Configuration of Router 1 485
- Configuration of Router 2 486
- Configure demand circuits: 491
- Protocol Configuration 493
- Backup Pool Configuration 503
- Backup Circuit Configuration 504
- Appendix C 519
- BCC show Commands 519
- show dial backup circuits 520
- Online Help for show Commands 521
- Commands for Dial-on-Demand 522
- Demand Circuit Information: 524
- <circuit_name> 528
- -caller 529
- -circuit 530
- Commands for Dial Backup 531
- Modem Commands 542
- Receive Errors: 545
- Transmit Errors: 545
- System Errors: 545
- Appendix D 549
- Ordering PRI Lines 550
- Appendix E 551
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