H3C Technologies H3C S3600 Series Switches - Manual (Page 416)

4-11
To do... Use the command... Remarks
Enter interface view
interface interface-type
interface-number
—
Enable PIM-SM pim sm
Required
Disabled by default
Configuring an RP
An RP can be manually configured or dynamically elected through the BSR mechanism. For a large
PIM network, static RP configuration is a tedious job. Generally, static RP configuration is just a backup
means for the dynamic RP election mechanism to enhance the robustness and operation manageability
of a multicast network.
Configuring a static RP
If there is only one dynamic RP in a network, manually configuring a static RP can avoid communication
interruption due to single-point failures and avoid frequent message exchange between C-RPs and the
BSR. To enable a static RP to work normally, you must perform this configuration on all the routers in the
PIM-SM domain and specify the same RP address.
Follow these steps to configure a static RP:
To do… Use the command… Remarks
Enter system view system-view —
Enter PIM view pim —
Configure a static RP
static-rp rp-address
[ acl-number ] Optional
No static RP by default
Configuring a C-RP
In a PIM-SM domain, you can configure routers that intend to become the RP as C-RPs. The BSR
collects the C-RP information by receiving the C-RP-Adv messages from C-RPs or auto-RP
announcements from other routers and organizes the information into an RP-set, which is flooded
throughout the entire network. Then, the other routers in the network calculate the mappings between
specific group ranges and the corresponding RPs based on the RP-set. We recommend that you
configure C-RPs on backbone routers.
To guard against C-RP spoofing, you need to configure a legal C-RP address range and the range of
multicast groups to be served on the BSR. In addition, because every C-BSR has a chance to become
the BSR, you need to configure the same filtering policy on all C-BSRs in the PIM-SM domain.
Follow these steps to configure a C-RP:
To do... Use the command... Remarks
Enter system view system-view —
Enter PIM view pim —