Common Pim Configuration - Huawei Quidway S5600 Series Operation Manual

Operation Manual – Multicast Protocol
Quidway S5600 Series Ethernet Switches-Release 1510
VI. Switching RPT to SPT
When the multicast router nearest to the receiver detects that the rate of the multicast
packet from RP to the multicast group G exceeds the threshold value, it will send (S, G)
join messages to the upper-layer router of the multicast source S. The join message
reaches the router nearest to the multicast source (namely, the first hop router) hop by
hop and all the passed routers have the (S, G) entry. As a result, a branch of SPT is
built.
Then, the last hop router sends Prune message with the RP bit to RP hop by hop.
When RP receives the message, it will reversely forward the Prune message to the
multicast source. Thus, the multicast information stream is switched from RPT to SPT.
After the switch from RPT to SPT, the multicast information will be sent from the
multicast source S to the receiver directly. Through the switching from RPT to SPT,
PIM-SM can build SPT in a more economical way than PIM-DM.
The related threshold values are not set on S5600 series Ethernet switches. When the
switch receives multicast data forwarded along RPT, it will update the input interface
automatically and sends Prune messages to RP.

7.2 Common PIM Configuration

You can configure the PIM feature of the switch in interface view. The configuration
includes:
Table 7-1 Configuration tasks
Operation
Enable
(PIM-SM) on the interface
Configure the interval of
sending Hello packets
Configure PIM neighbors
Clear the related PIM
entries
7.2.1 Enabling PIM-DM (PIM-SM) on the Interface
Table 7-2 Enable PIM-DM (PIM-SM) on the interface
Operation
Enter system view
Enable
routing protocol
Description
PIM-DM
Required
Optional
Optional
Optional
system-view
the multicast multicast
routing-enable
Huawei Technologies Proprietary
Section 7.2.1
(PIM-SM) on the Interface
Section
interval of sending Hello packets
Section 7.2.3
Neighbors
Section 7.2.4 Clearing the Related
PIM Entries
Command
7-10
Chapter 7 PIM Configuration
Related section
Enabling PIM-DM
7.2.2 Configuring
Configuring PIM
Description
—
Required
the