- About This Document
- Overview of Reliability
- Interface Backup Configuration
- Overview of Interface Backup
- Understanding Interface Backup
- Application Scenarios for Interface Backup
- Summary of Interface Backup Configuration Tasks
- Licensing Requirements and Limitations for Interface Backup
- Default Settings for Interface Backup
- Configuring Interface Backup in Active/Standby Mode
- Configuring Association of Interface Backup in Active/Standby Mode
- Configuring Interface Backup in Load Balancing Mode
- Configuration Examples for Interface Backup
- Example for Configuring Ethernet Interface Backup in Active/Standby Mode
- Example for Configuring Ethernet Interface Backup in Load Balancing Mode
- Example for Configuring Interface Backup in Active/Standby Mode on an ISDN Network
- Example for Configuring an ADSL Interface as the Backup of an Ethernet Interface
- Example for Configuring ADSL Link Backup in Interface Backup Mode on a 3G Network
- Example for Configuring Backup Between 3G Interfaces
- Example for Configuring Association Between NQA and Ethernet Interface Backup in Active/Standby Mode
- Example for Configuring Association Between BFD and Ethernet Interface Backup in Active/Standby Mode
- Example for Configuring Association Between Routing and Ethernet Interface Backup in Active/Standby Mode
- Example for Associating Interface Backup with NQA to Configure an ISDN Interface as the Backup of an Ethernet Interface
- Example for Associating Interface Backup with BFD to Configure an ISDN Interface as the Backup of an Ethernet Interface
- Example for Configuring Association Between Interface Backup and Routing on an ISDN Network
- Example for Associating Interface Backup with NQA to Configure an ADSL Interface as the Backup of an Ethernet Interface
- Example for Associating Interface Backup with BFD to Configure an ADSL Interface as the Backup of an Ethernet Interface
- Example for Associating Interface Backup with Routing to Configure an ADSL Interface as the Backup of an Ethernet Interface
- FAQ About Interface Backup
- Interface Monitoring Group Configuration
- Overview of Interface Monitoring Groups
- Understanding Interface Monitoring Groups
- Application Scenarios for Interface Monitoring Groups
- Licensing Requirements and Limitations for Interface Monitoring Groups
- Configuring an Interface Monitoring Group
- Maintaining an Interface Monitoring Group
- Configuration Examples for Interface Monitoring Groups
- NSR Configuration
- HSB Configuration
- BFD Configuration
- Overview of BFD
- Understanding BFD
- Application Scenarios for BFD
- Summary of BFD Configuration Tasks
- Licensing Requirements and Limitations for BFD
- Default Settings for BFD
- Configuring Single-Hop BFD
- Configuring Multi-Hop BFD
- Configuring Static BFD with Automatically Negotiated Discriminators
- Configuring the BFD Echo Function
- Configuring BFD Association
- Adjusting BFD Parameters
- (Optional) Configuring a BFD Group
- Verifying the BFD Configuration
- Clearing BFD Session Statistics
- Configuration Examples for BFD
- Example for Configuring Single-hop BFD for Detecting Faults on a Layer 2 Link
- Example for Configuring Single-Hop BFD on a VLANIF Interface
- Example for Configuring single-hop BFD on a Layer 3 Physical Link
- Example for Configuring Multi-Hop BFD
- Example for Associating the BFD Session Status with the Interface Status
- Example for Configuring BFD on a Dot1q Termination Sub-interface
- Example for Configuring the BFD Echo Function
- Example for Configuring BFD Encryption Authentication
- Example for Configuring Single-hop BFD for IPv6 for a Layer 3 Physical Link
- Example for Configuring Multi-hop BFD for IPv6
- Troubleshooting BFD
- FAQ About BFD
- How Do I Distinguish a Single-Hop BFD Session and a Multi-Hop BFD Session?
- What Do the TTL Values 255, 254, and 253 Mean in a BFD Session?
- How Do I Change the Local and Remote Discriminators of a BFD Session?
- Which Interfaces Can I Configure a BFD Session On?
- Which Interval Is Used If Packets on the Two Ends of a BFD Session Are Transmitted and Received In Different Intervals?
- Can a single-hop BFD session be established when a router directly connects to a PC?
- VRRP Configuration
- Overview of VRRP
- Principles
- Applicable Scenarios for VRRP
- Summary of VRRP Configuration Tasks
- Licensing Requirements and Limitations for VRRP
- Default Settings for VRRP
- Configuring VRRP
- Maintaining VRRP
- Configuration Examples for VRRP
- Example for Configuring a VRRP Group in Active/Standby Mode
- Example for Configuring a VRRP Group in Multi-gateway Load Balancing Mode
- Example for Configuring Association Between VRRP and BFD to Implement a Rapid Active/Standby Switchover
- Example for Configuring Association Between VRRP and the Interface Status
- Example for Configuring Association Between VRRP and BFD to Monitor the Uplink Status
- Example for Configuring Association Between VRRP and NQA to Monitor the Uplink Status
- Example for Configuring Association Between VRRP and Routing to Monitor the Uplink Status
- Example for Configuring VRRP on a Dot1q Termination Sub-interface
- Example for Configuring VRRP on a QinQ Termination Sub-interface
- Example for Configuring a VRRP6 Group in Active/Standby Mode
- Example for Configuring a VRRP6 Group in Load Balancing Mode
- Example for Configuring VRRP IPv6 Association
- Using Python Scripts to Implement Interworking When VRRP Nodes Fail
- Troubleshooting VRRP
- FAQ About VRRP
- Can Physical Interfaces Be Configured as Monitored Interfaces of a VRRP Group?
- How Is a VRRP Virtual MAC Address Calculated?
- What Interfaces Are Provided on the Router That Support VRRP?
- Does VRRP Support Authentication?
- Why Have I Failed to Configure the Priority 255 of a Router in a VRRP Backup Group?
- How Do I Quickly Implement VRRP Switchover?
- EFM Configuration
- Overview of EFM
- Understanding EFM
- Summary of EFM Configuration Tasks
- Licensing Requirements and Limitations for EFM
- Default Settings for EFM
- Configuring Basic EFM Functions
- Configuring EFM Link Monitoring
- Configuring Remote Loopback
- Configuring Remote Fault Indication
- Configuring EFM Association
- Configuration Examples for EFM
- CFM Configuration
- Overview of CFM
- Understanding CFM
- Application Scenarios for CFM
- Licensing Requirements and Limitations for CFM
- Default Settings for CFM
- Configuring Basic CFM Functions
- (Optional) Configuring CFM Parameters
- Configuring Association Between EFM and CFM
- Monitoring the CFM Running Status
- Configuration Examples for CFM
- Y.1731 Configuration