Operation Manual – MulticastH3C S5600 Series Ethernet Switches Chapter 4 PIM Configuration4-134.3.2 Configuring an RPAn 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 RPconfiguration is just a backup means for the dynamic RP election mechanism toenhance the robustness and operation manageability of a multicast network.I. Configuring a static RPIf there is only one dynamic RP in a network, manually configuring a static RP can avoidcommunication interruption due to single-point failures and avoid frequent messageexchange between C-RPs and the BSR. To enable a static RP to work normally, youmust perform this configuration on all the routers in the PIM-SM domain and specify thesame RP address.Follow these steps to configure a static RP:To do… Use the command… RemarksEnter system view system-view —Enter PIM view pim —Configure a static RP static-rp rp-address[ acl-number ]OptionalNo static RP by defaultII. Configuring a C-RPIn 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 fromC-RPs or auto-RP announcements from other routers and organizes the informationinto an RP-set, which is flooded throughout the entire network. Then, the other routersin the network calculate the mappings between specific group ranges and thecorresponding RPs based on the RP-set. We recommend that you configure C-RPs onbackbone routers.To guard against C-RP spoofing, you need to configure a legal C-RP address rangeand the range of multicast groups to be served on the BSR. In addition, because everyC-BSR has a chance to become the BSR, you need to configure the same filteringpolicy on all C-BSRs in the PIM-SM domain.Follow these steps to configure a C-RP:To do... Use the command... RemarksEnter systemview system-view —Enter PIM view pim —
