HP 6125G HP 6125G & 6125G/XG Blade Switches IP Multicast Configuration - Page 266
Configuring the IPv6 multicast forwarding table size
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Step 1. Enter system view. 2. Enter interface view. 3. Configure an IPv6 multicast forwarding boundary. Command system-view interface interface-type interface-number multicast ipv6 boundary { ipv6-group-address prefix-length | scope { scope-id | admin-local | global | organization-local | site-local } } Remarks N/A N/A No forwarding boundary by default. Configuring the IPv6 multicast forwarding table size The switch maintains the corresponding forwarding entry for each IPv6 multicast packet that it receives. Excessive IPv6 multicast routing entries, however, can exhaust the switch's memory and cause lower performance. You can set a limit on the number of entries in the IPv6 multicast forwarding table based on the actual networking situation and the performance requirements. If the configured maximum number of IPv6 multicast forwarding table entries is smaller than the current value, the entries in excess are not immediately deleted. Instead, the IPv6 multicast routing protocol that runs on the switch deletes them. The switch no longer adds new IPv6 multicast forwarding entries until the number of existing IPv6 multicast forwarding entries comes down below the configured value. When the switch forwards IPv6 multicast traffic, it replicates a copy of the IPv6 multicast traffic for each downstream node and forwards the traffic. Each of these downstream nodes forms a branch of the IPv6 multicast distribution tree. You can configure the maximum number of downstream nodes (the maximum number of outgoing interfaces) for a single entry in the IPv6 multicast forwarding table to lessen the burden on the switch for replicating IPv6 multicast traffic. If the configured maximum number of downstream nodes for a single IPv6 multicast forwarding entry is smaller than the current number, the downstream nodes in excess are not deleted immediately. Instead, the IPv6 multicast routing protocol deletes them. The switch no longer adds new IPv6 multicast forwarding entries for newly added downstream nodes until the number of existing downstream nodes comes down below the configured value. To configure the IPv6 multicast forwarding table size: Step 1. Enter system view. 2. Configure the maximum number of entries in the IPv6 multicast forwarding table. 3. Configure the maximum number of downstream nodes for a single IPv6 multicast forwarding entry. Command system-view multicast ipv6 forwarding-table route-limit limit multicast ipv6 forwarding-table downstream-limit limit Remarks N/A Optional. 1000 by default. Optional. 128 by default. 255