R3721-F3210-F3171-HP High-End Firewalls Network Management Configuration Guide-6PW101

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message from the upstream router has changed, it assumes that the status of the upstream neighbor is lost
or the upstream neighbor has changed. In this case, it triggers a join message for state update.
If you disable join suppression—namely, enable neighbor tracking, be sure to disable the join
suppression feature on all IPv6 PIM routers on a multi-access subnet. Otherwise, the upstream router will
fail to explicitly track join messages from downstream routers.
Configuring hello options globally
To configure hello options globally:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enter IPv6 PIM view.
pim ipv6
N/A
3. Configure the priority for DR
election.
hello-option dr-priority priority
Optional.
1 by default.
4. Configure IPv6 PIM neighbor
timeout time.
hello-option holdtime interval
Optional.
105 seconds by default.
5. Configure the prune message
delay time (LAN-delay).
hello-option lan-delay interval
Optional.
500 milliseconds by default.
6. Configure the prune override
interval.
hello-option override-interval
interval
Optional.
2,500 milliseconds by default .
7. Disable join suppression.
hello-option neighbor-tracking Enabled by default.
Configuring hello options on an interface
To configure hello options on an interface:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enter interface view.
interface interface-type
interface-number
N/A
3. Configure the priority for DR
election.
pim ipv6 hello-option dr-priority
priority
Optional.
1 by default.
4. Configure IPv6 PIM neighbor
timeout time.
pim ipv6 hello-option holdtime
interval
Optional.
105 seconds by default.
5. Configure the prune message
delay time (LAN-delay).
pim ipv6 hello-option lan-delay
interval
Optional.
500 milliseconds by default.
6. Configure the prune override
interval.
pim ipv6 hello-option
override-interval interval
Optional.
2,500 milliseconds by default.
7. Disable join suppression.
pim ipv6 hello-option
neighbor-tracking
Enabled by default.
8. Configure the interface to
reject hello messages without
a generation ID.
pim ipv6 require-genid
By default, hello messages without
Generation_ID are accepted.