multicast max-list
Function
The multicast max-list command sets the total maximum number of IPv4 and IPv6 multicast programs that a user is allowed to access at a time.
The undo multicast max-list command cancels the configured total maximum number of multicast programs that a user is allowed to access at a time.
By default, a user is allowed to access a maximum number of 4 multicast programs at a time.
This command is supported only on the NetEngine 8000 F1A.
Usage Guidelines
Usage Scenario
To set the total maximum number of IPv4 and IPv6 multicast programs that a user is allowed to access at a time, run the multicast max-list.
Precautions
If the configured number of multicast programs is greater than 64, the default host CAR values may not meet requirements. You must run the hostcar cir command to configure a CIR and CBS for host CAR based on the configured number of multicast groups, and run the undo hostcar enable command to disable automatic bandwidth adjustment for user login. The CIR and CBS are calculated using the following formulas: CBS (unit: bytes) = MAX (maxnum x packetlen x ratio, 32000). CIR (unit: kbit/s) = MAX (maxnum x packetlen x ratio x 8÷ 1000÷ interval, 32). In the formulas, maxnum indicates the maximum number of multicast groups that a user can join in a domain. packetlen indicates the packet length, in bytes. The maximum packet length is 140 bytes. ratio indicates the adjustment coefficient, which is 7.5. interval is related to the device configuration. In IGMP scenarios, run the display igmp interface command to query the value of Value of startup query interval. In PIM scenarios, run the display pim neighbor command to query the value of Holdtime.