The pim ipv6 bsr-boundary command configures a BootStrap router (BSR) boundary on an interface.
The undo pim ipv6 bsr-boundary command restores the default configuration.
By default, no BSR boundary is configured on an interface.
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Usage Scenario
A BSR is a core of a PIM-SM network responsible for collecting Rendezvous Point (RP)-Set information on the network, encapsulating the RP-Set information in a Bootstrap message, and advertising the message to every PIM neighbor.
Prior to configuring PIM-SM inter-domain multicast, you need to configure BSR boundaries on interfaces of edge Router to divide PIM-SM domains. Configuring BSR boundaries for a PIM-SM network and the Internet also helps isolate the PIM-SM network from the Internet.Prerequisites
The multicast ipv6 routing-enable command is run in the public network instance view.
Configuration Impact
The interface configured with a BSR boundary of a PIM-SM domain can neither send nor receive BSR messages. BSR messages cannot pass the BSR boundary but other multicast packets can pass the BSR boundary. BSR boundaries divide a large-scale PIM-SM network into several PIM-SM domains and each BSR serves only the local PIM-SM domain and Routers in another PIM-SM domain cannot participate in packet forwarding in the local domain.
Precautions
If two PIM-SM domains are in different autonomous systems (ASs), you also need to configure BSR boundaries on edge Routers.