Adjusting Control Parameters for Establishing the Neighbor Relationship

Multicast devices establish PIM neighbor relationships and negotiate various control parameters by exchanging Hello messages. You can adjust the parameters carried in Hello messages as required. If there is no special requirement, adopt default values.

Configuring Control Parameters for Establishing the Neighbor Relationship: Control Parameters for Establishing the Neighbor Relationship can be configured either globally or on an interface. The configuration in the interface view is prior to the configuration in the PIM view. When the interval is not configured in the interface view, the configuration in the PIM view takes effect.

Configuring Control Parameters for Electing a DR: The control parameters for electing a DR can be set either globally or on an interface.

Enabling the Function of Tracking a Downstream Neighbor: When the Generation ID option in the Hello message received from an upstream neighbor changes, it indicates that the status of the upstream neighbor changes. Therefore, you can configure a PIM interface to deny the Hello messages without Generation ID options to obtain the upstream neighbor status in real time.

Configuring PIM Neighbor Filtering: To prevent some unknown devices from being involved in PIM, filtering PIM neighbors is required. An interface sets up neighbor relationships with only the addresses matching the filtering rules and deletes the neighbors unmatched with the filtering rules.