HP 6125XLG R2306-HP 6125XLG Blade Switch IP Multicast Configuration Guide - Page 72

BSR encapsulates the RP-set information in the bootstrap messages (BSMs) and floods the BSMs to the entire PIM-SM domain. Figure 27 Information exchange between C-RPs and BSR Based on the information in the RP-sets, all routers in the network can select the proper RP for a specific multicast group based on the following rules: 1. The C-RP that is designated to the smallest multicast group range wins. 2. If all the C-RPs are designated to the same multicast group range, the C-RP with the highest priority wins. 3. If all the C-RPs are designated to the same multicast group range and have the same priority, the C-RP with the largest hash value (calculated through the hashing algorithm) wins. 4. If all the C-RPs are designated to the same multicast group range and have the same priority and hash value, the C-RP that has the highest IP address wins. RPT building Figure 28 RPT building in a PIM-SM domain Source RP Server RPT Join message Multicast packets 65 Host A Receiver DR Host B DR Receiver Host C