4.10.4 Checking the Configurations.................................................................................................................................174

4.10.5 Configuring ARP Update Triggered by Changes in the Outbound Interfaces of the VRRP Virtual MAC Address

..........................................................................................................................................................................................175

4.11 Maintaining VRRP...................................................................................................................................................176

4.11.1 Clearing VRRP Statistics.......................................................................................................................................176

4.11.2 Monitoring VRRP Status.......................................................................................................................................176

4.12 Configuration Examples...........................................................................................................................................177

4.12.1 Example for Configuring a VRRP Backup Group................................................................................................177

4.12.2 Example for Configuring VRRP Backup Groups Working in Load Balancing Mode.........................................182

4.12.3 Example for Connecting VRRP Backup Groups to L3VPNs...............................................................................190

4.12.4 Example for Configuring a VRRP Backup Group on VLANIF Interfaces...........................................................224

4.12.5 Example for Configuring an mVRRP Backup Group to Ignore the Interface Down Event.................................231

4.12.6 Example for Implementing a Rapid VRRP Switchover Using BFD Sampling....................................................253

4.12.7 Example for Associating a VRRP Backup Group with a BFD Session................................................................273

4.12.8 Example for Associating a VRRP Backup Group with an EFM Session.............................................................279

4.12.9 Example for Associating a VRRP Backup Group with a Route...........................................................................285

4.12.10 Example for Configuring a VRRP IPv6 Backup Group......................................................................................292

4.12.11 Example for Configuring VRRP IPv6 Backup Groups Working in Load Balancing Mode...............................297

4.12.12 Example for Configuring VRRP IPv6 Association.............................................................................................302

5 BFD Configuration....................................................................................................................310

5.1 Introduction................................................................................................................................................................312

5.1.1 BFD Overview.........................................................................................................................................................312

5.1.2 BFD Features Supported by the NE80E/40E..........................................................................................................312

5.2 Configuring Single-hop BFD.....................................................................................................................................323

5.2.1 Before You Start......................................................................................................................................................323

5.2.2 Enabling BFD Globally...........................................................................................................................................324

5.2.3 Setting Up a BFD Session.......................................................................................................................................325

5.2.4 Checking the Configurations...................................................................................................................................326

5.3 Configuring the BFD Passive Echo Function.............................................................................................................327

5.3.1 Before You Start......................................................................................................................................................327

5.3.2 Configuring the BFD Session Passive Echo Function............................................................................................328

5.3.3 Checking the Configurations...................................................................................................................................329

5.4 Configuring the Association Between the BFD Status and the Interface Status........................................................330

5.4.1 Before You Start......................................................................................................................................................330

5.4.2 Configuring the Association Between BFD Status and Interface Status.................................................................331

5.4.3 Checking the Configurations...................................................................................................................................332

5.5 Configuring the Association Between the BFD Status and the Sub-Interface Status................................................333

5.5.1 Before You Start......................................................................................................................................................334

5.5.2 Configuring the Association Between BFD Status and Sub-Interface Status.........................................................334

5.5.3 Checking the Configurations...................................................................................................................................335

Issue 02 (2014-09-30)

Huawei Proprietary and Confidential

viii

Table of Contents