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DES-7200 Configuration Guide Chapter 7 PIM-SMv6
Configuration
7-5
Note
When the Hello message transmission interval is updated every time, the Hello
message hold time is updated 3.5 times of the Hello message transmission
interval. If the Hello message transmission interval multiplying 3.5 is larger
than 65535, the Hello message hold time is updated to 65535.
7.2.4 Configure the Propagation Delay of the Hello Message
After the interface sends the Hello message, you can set the options of the Hello
message. For LAN prune delay, the Propagation_Delay field is 500ms by default.
To configure the propagation delay, run the following command in the interface
configuration mode.
Command Function
DES-7200(config-if)# ipv6 pim
propagation-delay
interval-milliseconds
Set the propagation delay.
interval-milliseconds: in the range of
1-32767 ms.
DES-7200(config-if)# no ipv6 pim
propagation-delay
Restore the propagation delay
setting to the default value, namely
500ms.
Note
Change of propagation delay or prune delay will influence the override interval
of Join/prune message. As specified in the protocol, the override interval of
Join/prune message must be less than its hold time or otherwise this will cause
temporary interruption.
7.2.5 Configure the Override Interval of the Hello Message
After the interface sends the Hello message, you can set the options of the Hello
message. For LAN prune delay, the override-interval field is defaulted to 2500ms.
To configure the override-interval field, run the following command in the interface
configuration mode.
Command Function
DES-7200(config-if)# ipv6 pim
override-interval interval-milliseconds
Set the override-interval.
interval-milliseconds: In the range of
1 to 65535 seconds.
DES-7200(config-if)# no ipv6 pim
override-interval
Restore the setting to the default
value.
Note
Change of propagation delay or prune delay will influence the override interval
of Join/prune message. As specified in the protocol, the override interval of
Join/prune message must be less than its hold time or otherwise this will cause
temporary interruption.
7.2.6 Configure the Neighbor Tracking of the Hello Message
After an interface sends the Hello message, the LAN Prune Delay option of the
Hello message has a T bit, indicating whether join constraint is enabled on the
interface. With join constraint enabled, the interface is constrained not to send its
Join message to the upstream neighbor when it receives the Join message that