Configuring Control Parameters for Electing a DR

Procedure

• Global Configuration
  1. Access the system view.

     system-view

  2. Access the PIM view.

     pim [ vpn-instance vpn-instance-name ]

  3. Set the DR priority.

     hello-option dr-priority priority

     On a shared network segment where all PIM devices support the DR priority, the interface with the highest priority acts as the DR. In the case of the same priority, the interface with the largest IP address acts as the DR. If a minimum of one PIM device does not support the DR priority, the interface with the largest IP address acts as the DR.

• Configuration on an Interface
  1. Access the system view.

     system-view

  2. Access the interface view.

     interface interface-type interface-number

  3. Set the DR priority.

     pim hello-option dr-priority priority

     On a shared network segment where all PIM devices support the DR priority, the interface with the highest priority acts as the DR. In the case of the same priority, the interface with the largest IP address acts as the DR. If a minimum of one PIM device does not support the DR priority, the interface with the largest IP address acts as the DR.

  4. Configure the DR switchover delay and specify the delay.

     pim timer dr-switch-delay interval

     When an interface changes from a DR to a non-DR, the original entries are valid till the delay expires.

     By default, once an interface changes from a DR to a non-DR, the original entries are deleted immediately.