ECS4660-28F_Management Guide-R03

C HAPTER 52 | Multicast Routing Commands
PIM Multicast Routing
– 1955 –
COMMAND MODE
Interface Configuration (VLAN)
COMMAND USAGE
◆ When other downstream routers on the same VLAN are notified that
this upstream router has received a prune request, they must send a
Join to override the prune before the prune delay expires if they want
to continue receiving the flow. The message generated by this
command effectively prompts any downstream neighbors with hosts
receiving the flow to reply with a Join message. If no join messages are
received after the prune delay expires, this router will prune the flow.
◆ Prune delay is the sum of the effective propagation-delay and effective
override-interval, where effective propagation-delay is the largest
propagation-delay from those advertised by each neighbor (including
this switch), and effective override-interval is the largest override-
interval from those advertised by each neighbor (including this switch).
EXAMPLE
Console(config-if)#ipv6 pim lan-prune-delay
Console(config-if)#
RELATED COMMANDS
ipv6 pim override-interval (1955)
ipv6 pim propagation-delay (1956)
ipv6 pim
override-interval
This command configures the override interval, or the time it takes a
downstream router to respond to a lan-prune-delay message. Use the no
form to restore the default setting.
SYNTAX
ipv6 pim override-interval milliseconds
no ipv6 pim override-interval
milliseconds - The time required for a downstream router to
respond to a lan-prune-delay message by sending back a Join
message if it wants to continue receiving the flow referenced in the
message. (Range: 500-6000 milliseconds)
DEFAULT SETTING
2500 milliseconds
COMMAND MODE
Interface Configuration (VLAN)
COMMAND USAGE
The override interval configured by this command and the propagation
delay configured by the ipv6 pim propagation-delay command are used to
calculate the LAN prune delay. If a downstream router has group members
which want to continue receiving the flow referenced in a LAN prune delay