Configuring a Dual-Device Backup Platform

This section describes how to configure a dual-device backup platform to back up IGMP entries. If a network node or link fails, a rapid multicast service switchover is triggered, improving service reliability.

Prerequisites

A VRRP group has been created using the vrrp vrid virtual-router-id [ virtual-ip virtual-address ] command.

An mVRRP group has been created using the admin-vrrp vrid virtual-router-id [ ignore-if-down ] command.

Context

In a VRRP master/backup scenario, a dual-device backup platform enables the master device to back up IGMP entries to the backup device through a remote backup service (RBS) channel, ensuring multicast service continuity. Configuring a dual-device backup platform includes configuring an RBS, a remote backup profile (RBP), and a dual-device VRRP backup platform.

Perform the following steps on both the master and backup devices:

Procedure

Configure an RBS.
1. Run system-view
  The system view is displayed.
2. Run remote-backup-service service-name
  An RBS is created, and the RBS view is displayed.
3. Run peer peer-ip-address source source-ip-address port port-id
  TCP connection parameters are set for the RBS.
  
  peer-ip-address specifies the IP address of the peer device in a VRRP group, and source-ip-address specifies the IP address of the local device in the VRRP group. The IP addresses of the master and backup devices must have been configured on their own interfaces, sub-interfaces, or logical interfaces (such as loopback interfaces) and be able to ping each other.
  
  port-id specifies a TCP port number. The TCP port numbers configured on the master and backup devices must be the same.
4. Run quit
  Return to the system view.
Configure an RBP.
1. Run remote-backup-profile profile-name
  An RBP is created, and the RBP view is displayed.
2. Run backup-id backup-id remote-backup-service service-name
  A backup ID is set for the RBP, and the RBP is associated with a specified RBS.
  
  backup-id specifies a backup ID for an RBP. You can use a backup ID and an RBS to determine an RBP. The backup IDs configured for the same RBP must be the same on the master and backup devices and can no longer be configured for other RBPs.
3. Run peer-backup hot
  Hot backup is configured for user information backup between the master and backup devices.
4. Run quit
  Return to the system view.
Configure a dual-device VRRP backup platform.
1. Run remote-backup-profile profile-name
  An RBP is created, and the RBP view is displayed.
2. Run vrrp-id vrid interface interface-type interface-number
  The ID and interface of a VRRP group are associated with the RBP.
3. Run quit
  Return to the system view.
4. Run commit
  The configuration is committed.
Configure rapid service link switching.
1. Run monitor-group monitor-group-name
  An interface monitoring group is created, and the group view is displayed.
2. Run monitor enable
  The monitoring function is enabled for the interface monitoring group.
3. Run binding interface
  The interface to be monitored is added to the interface monitoring group.
4. Run quit
  Return to the system view.
5. Run multicast routing-enable
  IP multicast routing is enabled.
6. Run interface interface-type interface-number
  The interface view is displayed.
7. Run pim sm
  PIM-SM is enabled on the interface.
8. Run igmp enable
  IGMP is enabled.
9. (On the interface that connects the master and backup devices) Run vrrp vrid virtual-router-id track monitor-group [ monitor-group-name ] failure-ratio failure-ratio-value [ link | [ reduced priority-value ] ]
  The mVRRP group is enabled to track the interface monitoring group.
10. (On the interface that connects to a downstream device) Run vrrp vrid virtual-router-id1 track admin-vrrp interface interface-type interface-number vrid virtual-router-id2
  The common VRRP group is bound to the mVRRP group in flowdown mode.
11. (On the interface that connects to a downstream device) Run multicast track vrrp vrid vrid-value
  The multicast service interface is bound to the VRRP group.
12. (On the interface that connects to a downstream device) Run pim ignore dr-state
  The interface is enabled to ignore the PIM DR state.
13. (On the interface that connects to a downstream device) Run pim ignore assert-state
  The interface is enabled to ignore the PIM Assert state.
14. (On the interface that connects to a downstream device) Run remote-backup-profile profile-name
  The interface is bound to the RBP.
15. (On the interface that connects to a downstream device) Run quit
  Return to the system view.
16. Run commit
  The configuration is committed.