If a multicast device can receive multicast data through
the downstream interface, this indicates that other upstream devices
exist in this network segment. The device then sends an Assert message
through the downstream interface to take part in the election of the
unique upstream device.
Prerequisites
Before configuring a BSR administrative domain, complete
the following tasks:
Context
The configuration involves the following cases:
Global configuration: It is valid on all the interfaces.
Configuration on an interface: The configuration on an interface
takes precedence over the global configuration. If the configuration
on an interface is not done, the global configuration is used.
Procedure
- Global Configuration
- Access the system view.
system-view
- Access the PIM view.
pim [ vpn-instance vpn-instance-name ]
- Set the period for holding the Assert state.
holdtime assert interval
The FW that fails in the election prevents the downstream interface from
forwarding multicast packets within the interval. After the interval
expires, the downstream interface starts to forward multicast packets.
- Configuration on the Interface
- Access the system view.
system-view
- Access the interface view.
interface interface-type interface-number
- Set the period for holding the Assert state.
pim holdtime assert interval
The FW that fails in
the election prohibits the downstream interface from forwarding multicast
packets within this interval. After the interval expires, the downstream
interface starts to forward multicast packets.