Operation Manual - Multicast
Quidway S3500 Series Ethernet Switches Chapter 7 PIM-SM Configuration
Huawei Technologies Proprietary
7-3
II. Configure BSRs
The BSR is the management core in a PIM-SM network. Candidate-RPs send
announcement to the BSR, which is responsible for collecting and advertising the
information about all candidate-RPs.
It should be noted that there can be only one BSR in a network but you can configure
multiple candidate-BSRs. In this case, once a BSR fails, you can switch over to another
BSR. A BSR is elected among the C-BSRs automatically. The C-BSR with the highest
priority is elected as the BSR. If the priority is the same, the C-BSR with the largest IP
address is elected as the BSR.
III. Configure static RP
RP is the kernel router for the multicast routing. If the dynamic RP elected by BSR
mechanism fails, a static RP can be configured. As the backup of dynamic RP, static RP
improves robustness and operability of the multicast network.
7.2 PIM-SM Configuration
PIM-SM configuration includes:
z Enable Multicast
z Enable PIM-SM
z Configure the interface hello message interval
z Configure the PIM-SM domain border
z Enter PIM view
z Configure candidate-BSRs
z Configure candidate-RPs
z Configure static RP
z Configure RP to filter the register messages sent by DR
z Set the threshold of switchover from the RPT to the SPT
The first four items of configuration are mandatory. The remaining can use the default
configuration. It should be noted that at least one router in an entire PIM-SM domain
should be configured with Candidate-RPs and Candidate-BSRs.
7.2.1 Enable Multicast
Refer to “Common Multicast Configuration” of Chapter 2.
7.2.2 Enable PIM-SM
This configuration can be effective only after multicast is enabled.
Perform the following configuration in VLAN interface view.
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