HP 6125XLG R2306-HP 6125XLG Blade Switch IP Multicast Configuration Guide - Page 159
Configuring an RP
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To enable IPv6 PIM-SM: Step 1. Enter system view. Command system-view 2. Enable IPv6 multicast routing. ipv6 multicast routing-enable 3. Enter interface view. interface interface-type interface-number 4. Enable IPv6 PIM-SM. ipv6 pim sm Remarks N/A By default, IPv6 multicast routing is disabled. N/A By default, IPv6 PIM-SM is disabled. Configuring an RP An RP can provide services for multiple IPv6 multicast groups. However, only one RP can forward IPv6 multicast traffic for an IPv6 multicast group at a moment. An RP can be manually configured or dynamically elected through the BSR mechanism. For a large-scaled IPv6 PIM network, configuring static RPs is a tedious job. Generally, static RPs are backups for dynamic RPs to enhance the robustness and operational manageability on an IPv6 multicast network. Configuring a static RP If only one dynamic RP exists on a network, you can configure a static RP to avoid communication interruption caused by single-point failures. It can also avoid waste of bandwidth due to frequent message exchange between C-RPs and the BSR. The static RP configuration must be the same on all routers in the IPv6 PIM-SM domain. To configure a static RP: Step 1. Enter system view. 2. Enter IPv6 PIM view. 3. Configure a static RP for IPv6 PIM-SM. Command system-view ipv6 pim static-rp ipv6-rp-address [ acl6-number | preferred ] * Remarks N/A N/A By default, no static RP is configured. Configuring a C-RP In an IPv6 PIM-SM domain, if you want a router to become the RP, you can configure the router as a C-RP. The BSR collects the C-RP information according to the received advertisement messages from C-RPs or the auto-RP announcements from other routers, and organizes the C-RP information into the RP-set information, which is flooded throughout the entire network. Then, the other routers in the network can determine the RPs for different IPv6 multicast group ranges based on the RP-set information. HP recommends configuring C-RPs on backbone routers. To enable the BSR to distribute the RP-set information in the PIM-SM domain, the C-RPs must periodically send advertisement messages to the BSR. The BSR learns the C-RP information, encapsulates the C-RP information and its own IPv6 address in a BSM, and floods the BSM to all IPv6 PIM routers in the domain. An advertisement message contains a holdtime option, which defines the C-RP lifetime for the advertising C-RP. After the BSR receives an advertisement message from a C-RP, it starts a timer for the C-RP. If the BSR 152