2 pim-sm configuration task list – Accton Technology ES4626 User Manual
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(3) SPT Switch
When the Multicast router finds that the rate of the Multicast packet from RP with
destination address G exceeds threshold, the Multicast router will send Join message to
the next upper lever nodes in the source direction, which results in the switch from RPT
to SPT.
2. Preparation before PIM-SM configuration
(1) Configuration Candidate RP
More than one RPs (candidate RP) can exist in PIM-SM network and each C-RP
(Candidate RP) takes charge of transmitting Multicast packets with destination address in
a certain range. To configure more than one candidate RPs can implement RP load
share. No master or slave is differentiated among RPs. All Multicast routers work out the
RP corresponding to some Multicast group based on the same algorithm after receiving
the candidate RP message announced by BSR.
Note that one RP can serve more than one Multicast groups and all Multicast groups.
Each Multicast group can only correspond to one unique RP at any moment. It can’t
correspond to more than one RP at the same time.
(2) Configure BSR
BSR is the management center of PIMSM network. It is in charge of collecting
messages sent by candidate RPs and broadcast them.
Only one BSR can exist within a network, but more than one C-BSR
(Candidate-BSR) can be configured. In this way, if some BSR goes wrong, it can switch
to another. C-BSRs elect BSR automatically.
16.3.2 PIM-SM Configuration Task List
1、 Enable PIM-SM (Required)
2、 Configure PIM-SM sub-parameters (Optional)
（
1） Configure PIM-SM interface parameters
2） Configure PIM-SM hello message interval
3） Configure interface as PIM-SM domain boundary
（
1） Configure PIM-SM global parameters
1) Configure Switch as candidate BSR
2) Configure switch as candidate RP
3、Disable PIM-SM Protocol
1. Enable PIM-SM Protocol
The basic configuration to function PIM-SM Routing Protocol on EDGECORE series
Layer 3 switch is very simple. It is only required to turn on PIM Multicast switch in Global
Mode and turn on PIM-SM switch under corresponding interface.
Command Explanation