HP 6125G HP 6125G & 6125G/XG Blade Switches IP Multicast Configuration - Page 130
Configuring a C-RP, Enabling auto-RP, Configuring C-RP timers globally
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Step 3. Configure a static RP for PIM-SM. Command static-rp rp-address [ acl-number ] [ preferred ] Remarks 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. HP recommends you to configure C-RPs on backbone routers. To guard against C-RP spoofing, you must 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 can become the BSR, you must configure the same filtering policy on all C-BSRs in the PIM-SM domain. When you configure a C-RP, ensure a relatively large bandwidth between this C-RP and the other devices in the PIM-SM domain. To configure a C-RP: Step Command 1. Enter system view. system-view 2. Enter PIM view. pim c-rp interface-type interface-number 3. Configure an interface to be a [ group-policy acl-number | priority C-RP for PIM-SM. priority | holdtime hold-interval | advertisement-interval adv-interval ] * 4. Configure a legal C-RP address range and the range of multicast groups to be crp-policy acl-number served. Remarks N/A N/A No C-RPs are configured by default. Optional. No restrictions by default. Enabling auto-RP Auto-RP announcement and discovery messages are addressed to the multicast group addresses 224.0.1.39 and 224.0.1.40. With auto-RP enabled on a device, the device can receive these two types of messages and record the RP information carried in such messages. To enable auto-RP: Step 1. Enter system view. 2. Enter PIM view. 3. Enable auto-RP. Command system-view pim auto-rp enable Remarks N/A N/A Disabled by default Configuring C-RP timers globally To enable the BSR to distribute the RP-set information within the PIM-SM domain, C-RPs must periodically send C-RP-Adv messages to the BSR. The BSR learns the RP-set information from the received messages, and encapsulates its own IP address together with the RP-set information in its bootstrap messages. The BSR then floods the bootstrap messages to all PIM routers in the network. 119
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