1-29z Maximum number of (S, G) entries in a join/prune messageConfiguring an IPv6 Multicast Data FilterNo matter in an IPv6 PIM-DM domain or an IPv6 PIM-SM domain, routers can check passing-by IPv6multicast data based on the configured filtering rules and determine whether to continue forwarding theIPv6 multicast data. In other words, IPv6 PIM routers can act as IPv6 multicast data filters. These filterscan help implement traffic control on one hand, and control the information available to downstreamreceivers to enhance data security on the other hand.Follow these steps to configure an IPv6 multicast data filter:To do... Use the command... RemarksEnter system view system-view —Enter IPv6 PIM view pim ipv6 —Configure an IPv6 multicastgroup filter source-policy acl6-numberRequiredNo IPv6 multicast data filter bydefaultz Generally, a smaller distance from the filter to the IPv6 multicast source results in a moreremarkable filtering effect.z This filter works not only on independent IPv6 multicast data but also on IPv6 multicast dataencapsulated in register messages.Configuring a Hello Message FilterAlong with the wide applications of IPv6 PIM, the security requirement for the protocol is becomingmore and more demanding. The establishment of correct IPv6 PIM neighboring relationships is aprerequisite for secure application of IPv6 PIM. You can configure a legal source address range for hellomessages on interfaces of routers to ensure the correct IPv6 PIM neighboring relationships and thus toguide against IPv6 PIM message attacks.Follow these steps to configure a hello message filter:To do… Use the command… RemarksEnter system view system-view —Enter interface view interface interface-typeinterface-number —Configure a hello messagefilterpim ipv6 neighbor-policyacl6-numberRequiredNo hello message filter bydefault.
