Motorola BSR 64000 Informazioni Techniche Pagina 503
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Configuring BGP
12-63
MOT(config-/jointfilesconvert/480087/bgp)#ip as-path access-list <access-list-number> {permit | deny}
<path-expression>
where:
access-list-number is the access list number.
path-expression is a valid path regular expression.
Example
The commands in the following example configure a router with two AS path access
lists. Routes that pass AS path access list 1 are sent to one destination. Routes that
pass AS path access list 2 are accepted from another destination. The commands,
executed in Global Configuration mode, specify permit and deny conditions for AS
path access lists 1 and 2.
MOT(config-/jointfilesconvert/480087/bgp)#ip as-path access-list 1 permit _200
MOT(config-/jointfilesconvert/480087/bgp)#ip as-path access-list 1 permit ^100
MOT(config-/jointfilesconvert/480087/bgp)#ip as-path access-list 2 deny _690
MOT(config-/jointfilesconvert/480087/bgp)#ip as-path access-list 2 permit.*
The next command, executed in Global Configuration mode, enables BGP and
specifies an AS. The next commands, executed in Router BGP Configuration mode,
define two neighbor peers, and assign the AS path list to one of the neighbor BGP
peers. This indicates that outbound routes have the conditions defined in AS path
access list 1 applied to it.
MOT(config)#router /jointfilesconvert/480087/bgp 100
MOT(config-/jointfilesconvert/480087/bgp)#neighbor 156.30.10.22 remote-as 200
MOT(config-/jointfilesconvert/480087/bgp)#neighbor 160.25.15.10 remote-as 300
MOT(config-/jointfilesconvert/480087/bgp)#neighbor 156.30.10.22 filter-list 1 out
Creating a Community List
Peers exchange the BGP community attributes when they exchange reachability
information with each other. A community is a group of destinations that share a
common policy. Based on community, you can control the routing information a BGP
speaker accepts, prefers, or distributes to other neighbors.
You can use the following predefined well-known community attributes with the
set-community command in a route map:
- BSR 64000 Configuration 1
- TPD-0034-01 2
- 501897-001-01 2
- Published: October, 2002 2
- Contents 3
- 3 Configuring the System 4
- 4 Configuring SNMP 6
- 6 Configuring the CMTS 8
- 7 Configuring Routing Policy 11
- 9 Configuring RIP 13
- 10 Configuring IS-IS 14
- 11 Configuring OSPF 15
- 12 Configuring BGP 16
- 13 Configuring VRRP 17
- Audience 21
- Documentation Set 21
- Conventions 22
- Notes, Cautions, Warnings 23
- Contacting Support 24
- Introduction 25
- Multiservice Support 27
- • Application hosting 28
- Using the Command Line 29
- Interface 29
- MOT> prompt 32
- MOT>enable 32
- Password: prompt displays 32
- Command Mode Access 33
- MOT(config-spcgrp: 34
- User EXEC Mode 35
- Privileged EXEC Mode 35
- Global Configuration Mode 35
- Interface Configuration Mode 36
- Router Configuration Mode 36
- Route Map Configuration Mode 36
- Cable Spectrum Group Mode 37
- Using Command Aliases 39
- Obtaining Help 40
- Using the Command History 41
- Recalling Commands 42
- Editing Features 43
- Handling Command Lines 44
- Deleting Entries 45
- Transposing Characters 46
- Controlling Case 46
- Initial Configuration Tasks 51
- Required Servers 52
- MOT> prompt displays 53
- Setting System Passwords 54
- Specifying a Host Name 56
- Defining a Privilege Level 59
- Defining a Group Access Level 59
- Configuring Interfaces 60
- • Configuring Console Logging 61
- • Setting the Logging Buffer 61
- Configuring Console Logging 64
- Setting the Logging Buffer 65
- Clearing the Buffer 66
- Report Location Description 68
- Report Description 68
- Sending Messages to BSR Users 69
- Configuring DHCP Relay 70
- MOT(config-if)#no shutdown 71
- MOT(config-if)#exit 71
- MOT(config)#exit 71
- Configuring DNS 72
- Configuring LDAP 73
- • Starting the LDAP client 74
- Configuring SNTP 75
- MOT#show sntp 77
- Configuring FTP Access 79
- Downloading Software 84
- MOT#copy ftp: nvram: 87
- MOT#copy ftp: flash: 88
- MOT#dir flash: 89
- Specifying System Information 92
- Reseting BSR Modules 95
- Monitoring the System 95
- MOT#show process 96
- MOT#show process cpu 98
- MOT#show process cpu restart 98
- MOT#show process sem 98
- MOT#show version 100
- Configuring the System 101
- MOT#show buffer 102
- MOT#show buffer all 102
- MOT#show buffer icp 102
- MOT#show buffer network 102
- MOT#show buffer pool 102
- Gathering System Information 103
- Viewing the Chassis Status 104
- BSR 64000: 105
- Field Description 105
- Configuring SNMP 111
- Overview 113
- Enabling SNMP 120
- Configuring the EngineID 126
- Defining a Community Name 128
- • Configuring a Group Model 130
- • Configuring a MIB View 130
- • Configuring an SNMP Context 131
- Configuring a MIB View 132
- Configuring an SNMP Context 133
- Configuring Packet Size 134
- Configuring SNMP Traps 135
- Specifying SNMP Trap Versions 137
- Restricting Trap Rates 138
- Monitoring SNMP 139
- Configuring Interfaces and 141
- TCP/IP Features 141
- About TCP/IP Level Features 143
- MOT#show chassis status 146
- MOT#configure 146
- Removing an IP Address 148
- Reverse ARP 157
- Configuring the MTU 159
- Configuring Static Routes 160
- Clearing Route Table Entries 162
- Enabling IRDP 163
- Enabling ICMP 165
- Tracing a Route 166
- Managing the Router 167
- IP Accounting 168
- Clearing Interface Counters 170
- Clearing IP Routes 170
- Clearing the ARP Cache 171
- Clearing IP Traffic 171
- Clearing DNS Entries 171
- MOT#show ip traffic 172
- Configuring the CMTS 173
- • Setting ARP Parameters 176
- MOT#show running-config 177
- • Disallow ARP broadcasts 183
- Setting ARP Parameters 185
- Enabling the Downstream Port 189
- 128 128 1 190
- Resetting a Downstream Port 191
- MOT#show interfaces cable 0 192
- Testing RF Carrier Modulation 193
- Table 6-3 Upstream Parameters 194
- • Enabling an Upstream Port 195
- Enabling an Upstream Port 200
- Managing the Upstream Channel 201
- Enabling Pre-equalization 207
- Disabling an Upstream Port 208
- Creating a Cable Bundle 211
- Creating a Modulation Profile 215
- Enabling the CM Aging Timer 218
- Configuring Baseline Privacy 223
- Setting TEK Privacy 224
- MOT#show cable privacy tek 226
- Setting QoS Parameters 228
- Initiating a DSC 229
- Initiating a DSD 230
- Viewing QoS Information 231
- Configuring a Spectrum Group 235
- Creating a Spectrum Group 236
- Configuring the Guard Band 254
- Showing Spectrum Data 259
- MOT#debug specmgr 264
- Using Flap Lists 269
- MOT#show cable flap-list 272
- Field Identification 274
- • Initial maintenance 275
- • Station maintenance 275
- • Power-off 275
- • Power-on 275
- Cause or Symptom Problem 276
- Managing Multicast Maps 281
- Resetting the Cable Modem 283
- Viewing CM Information 291
- MOT#show cable modem cpe 294
- Burst len Burst length 303
- MOT#show cable privacy auth 304
- Configuring Routing Policy 307
- Defining Route Maps 309
- Configuring an IP Access List 314
- Creating Community Lists 317
- Filtering Routes 318
- Redistributing Routes 320
- Applying a Damping Criteria 321
- Policy-Based Routing 322
- Defining Match Criteria 323
- Defining the Route 324
- • show ip access-list 326
- • show ip as-path access-list 326
- Configuring IP Multicast 331
- Configuring PIM 334
- Enabling PIM 335
- Configuring Candidate BSRs 337
- Configuring Candidate RPs 339
- Configuring DVMRP 340
- About DVMRP 341
- <n> 345
- About IGMP 348
- Enabling IGMP 349
- Changing the IGMP Version 350
- • Removing a DVMRP Prune 354
- • Removing a DVMRP Route 354
- • Clearing IGMP Statistics 354
- Removing a DVMRP Route 355
- Clearing IGMP Statistics 355
- Displaying PIM Information 358
- Displaying DVMRP Information 359
- Displaying IGMP Information 359
- Configuring RIP 361
- About RIP 363
- Specifications 364
- Enabling RIP 365
- Specifying a RIP Version 366
- Enabling Route Summarization 368
- Applying an Offset List 369
- Enabling RIP Authentication 370
- Configuring Interpacket Delay 370
- Configuring Timers 371
- MOT(config)#router rip 375
- Gathering RIP Information 376
- Configuring IS-IS 377
- Enabling IS-IS 379
- MOT(config)#router isis [tag] 380
- MOT(config-if)#ip router isis 381
- Managing IS-IS on the BSR 384
- Summarizing IP Address Ranges 387
- Enabling the LSP Overload Bit 387
- Setting the LSP Interval 391
- Gathering IS-IS Information 394
- Trigger Reason 396
- IS-IS router adjacencies 398
- Output Field Description 398
- Configuring OSPF 405
- Enabling OSPF 408
- • Configuring OSPF Stub Areas 411
- Configuring OSPF Stub Areas 412
- Managing OSPF on the BSR 417
- • Blocking OSPF LSA Flooding 424
- Table 11-1 OSPF Parameters 425
- Blocking OSPF LSA Flooding 428
- Gathering OSPF Information 430
- Showing Border Routers 431
- Showing Neighboring Routers 431
- Showing Virtual Links 433
- MOT#show ip ospf memory 434
- Configuring BGP 439
- About BGP 441
- BGP Peers 444
- BGP Updates 444
- BGP Sessions 444
- Configuring a BGP Neighbor 445
- Advertising Networks in an AS 447
- • Configuring BGP Peer Groups 449
- Configuring BGP Peer Groups 450
- Figure 12-4 BGP Peer Groups 451
- AS 200 AS 300 453
- Configuring a Route Reflector 455
- BGP Cluster 456
- Configuring a Cluster-ID 457
- • Global 459
- • Policy-based 459
- Clearing Route Flap Dampening 461
- MOT(config)#router bgp 100 464
- MOT(config)#router bgp 300 468
- Configuring Global BGP Tasks 469
- Resetting BGP Connections 470
- Figure 12-12 Synchronization 473
- • neighbor weight 474
- • route-map 474
- • access-list 474
- Using a Route Map 476
- Adjusting BGP Timers 477
- Disabling Route Summarization 480
- Configuring a Default Route 486
- Configuring BGP Update Flows 488
- BGP Path Selection Algorithm 489
- Configuring the MED Attribute 495
- Match and Set Statements 499
- Table 12-2 set Commands 500
- Table 12-1 match Commands 500
- Handling Access Lists 501
- Creating a Community List 503
- • no-export 504
- • no-advertise 504
- • no-sub-confed export 504
- command in 506
- MOT(config)#router bgp 511
- Monitoring BGP 512
- Configuring VRRP 513
- About VRRP 515
- Initial VRRP Tasks 515
- Enabling VRRP 516
- Creating a Virtual Router 516
- Enabling a Virtual Router 519
- Managing VRRP on the BSR 520
- Specifying Priority 521
- Pre-empting a Master 522
- Clearing Statistic Counters 523
- Example 2: 527
- Obtaining Summary Information 528
- Configuring 529
- Packet Over SONET 529
- About SONET/SDH 532
- Configuring the POS Interface 533
- Configuring PPP 534
- Configuring Packet Over SONET 535
- Configuring SONET 540
- Table 14-4 SONET Commands 541
- BSR(config-if)#pos scramble 542
- • PPP encapsulation is 0xCF 543
- • HDLC encapsulation is 0x16 543
- • ATM encapsulation is 0x13 543
- • Unequipped is 0x00 543
- Configuring SONET Alarms 545
- Setting Alarm Thresholds 546
- Setting Alarm Reporting 547
- MOT(config-if)#pos ais-shut 548
- Changing the POS Signal Rate 549
- MOT(config-if)#loop internal 550
- MOT(config-if)#loop line 550
- MOT(config-if)#loop txrx-line 550
- MOT(config-if)#show ppp info 552
- Alarm Identification 557
- Index-10 570
- Index-11 571
- Index-12 572
- Index-13 573
- Index-14 574
- Index-15 575
- Index-16 576
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