IGMP Snooping and Bridge Domains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 477
Configuring IGMP Snooping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 477
Configuring VLAN-Specific IGMP Snooping Parameters . . . . . . . . . . . . . . . . . . . 478
Example: Configuring IGMP Snooping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 479
Configuring IGMP Snooping Trace Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . 486
Chapter 16 Configuring Point-to-Point Protocol (PPP) . . . . . . . . . . . . . . . . . . . . . . . . . 489
Supported PPP Interface Standards on ACX Series . . . . . . . . . . . . . . . . . . . . . . 489
Configuring PPP Address and Control Field Compression . . . . . . . . . . . . . . . . . 490
Configuring the PPP Restart Timers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 491
Configuring PPP CHAP Authentication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 492
Configuring the PPP Clear Loop Detected Timer . . . . . . . . . . . . . . . . . . . . . . . . . 492
Configuring Dynamic Profiles for PPP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 493
Configuring the PPP Challenge Handshake Authentication Protocol . . . . . . . . . 493
PPP Challenge Handshake Authentication Protocol . . . . . . . . . . . . . . . . . . 493
Configuring the PPP Challenge Handshake Authentication Protocol . . . . . 494
Displaying the Configured PPP Challenge Handshake Authentication
Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 495
Configuring the PPP Password Authentication Protocol On a Physical
Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 496
Understanding PPP Password Authentication Protocol . . . . . . . . . . . . . . . 496
Configuring the PPP Password Authentication Protocol On a Physical
Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 497
Configuring the PPP Password Authentication Protocol On a Logical
Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 498
Configuring the PPP Authentication Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . 499
PPP Encapsulation on ACX Series Routers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500
Configuring Interface Encapsulation on Physical Interfaces in ACX Series . . . . . 501
Configuring the Encapsulation on a Physical Interface . . . . . . . . . . . . . . . . . 502
Encapsulation Capabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 504
Example: Configuring the Encapsulation on a Physical Interface . . . . . 505
Chapter 17 Configuring MLPPP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 507
Understanding MLPPP Bundles on ACX Series Routers . . . . . . . . . . . . . . . . . . . . 507
Guidelines for Configuring MLPPP With LSQ Interfaces on ACX Series
Routers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 509
Configuring Encapsulation for Multilink and Link Services Logical Interfaces . . . 514
Configuring the Minimum Number of Active Links on Multilink and Link Services
Logical Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 515
Configuring MRRU on Multilink and Link Services Logical Interfaces . . . . . . . . . . 516
Configuring the Sequence Header Format on Multilink and Link Services Logical
Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 517
Configuring Multiclass MLPPP on LSQ Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . 518
Configuring LSQ Interfaces as NxT1 or NxE1 Bundles Using MLPPP on ACX
Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 520
Example: Configuring an LSQ Interface as an NxT1 Bundle Using MLPPP . . 523
Example: Configuring an MLPPP Bundle on ACX Series . . . . . . . . . . . . . . . . . . . 525
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ACX Series Universal Access Router Configuration Guide