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DES-7200 Configuration Guide Chapter 7 PIM-SMv6
Configuration
7-6
its neighbor sends to the upstream neighbor. On the other hand, with join
constrain disabled, the interface will send its Join message to the upstream
neighbor when it receives the Join message that its neighbor sends to the
upstream neighbor. This function allows upstream routers to track how many
receivers in downstream in accord with all received Join messages. Join
constraint is enabled on the interface by default.
To disable join constraint on the interface, run the following command in the
interface configuration mode.
Command Function
DES-7200(config-if)# ipv6 pim
neighbor-tracking
Disable join constraint on the
interface.
DES-7200(config-if)# no ipv6 pim
neighbor-tracking
Enable join constraint on the
interface
7.2.7 Configure the Triggered Hello Delay of the Hello Message
When the router starts or detects a new neighbor starts, it sends the Hello
message. To avoid congestion, the router will send the Hello message at random.
This random time is calculated by triggered hello delay, which is 5s by default.
To configure triggered hello delay, run the command in the interface configuration
mode.
Command Function
DES-7200(config-if)# ipv6 pim
triggered-hello-delay
interval-seconds
Configure triggered hello delay.
interval-seconds: In the range of 1 to
5 seconds
DES-7200(config-if)# no ipv6 pim
triggered-hello-delay
Restore the setting to the default
value.
7.2.8 Configure PIM-SMv6 Neighbor Filtering
Neighbor filtering can be enabled on the interface for security. PIM-SMv6 will not
establish adjacency relation with a neighbor device and delete the established
adjacency relation as long as the neighbor device is denied by the filtering access
list.
To configure neighbor filtering, run the following command in the interface
configuration mode.
Command Function
DES-7200(config-if)# ipv6 pim
neighbor-filter ipv6_access-list
Enable neighbor filtering on the
interface.
DES-7200(config-if)# no ipv6 pim
neighbor-filter ipv6_access-list
Disable neighbor filtering on the
interface.
By default, neighbor filtering is disabled on the interface.
Note
Only the neighbors whose IP address matches ACL filtering can serve as the
PIM neighbors of the interface.