HPE FlexNetwork 5510 HI Series Configuration Manual page 144

enable neighbor tracking, you must enable it on all PIM routers on a shared-media LAN.
Otherwise, the upstream router cannot track join messages from every downstream routers.
• Generation ID—A router generates a generation ID for hello messages when an interface is
enabled with PIM. The generation ID is a random value, but only changes when the status of
the router changes. If a PIM router finds that the generation ID in a hello message from the
upstream router has changed, it assumes that the status of the upstream router has changed.
In this case, it sends a join message to the upstream router for status update. You can configure
an interface to drop hello messages without the generation ID options to promptly know the
status of an upstream router.
You can configure hello message options for all interfaces in PIM view or for the current interface in
interface view. The configuration made in interface view takes priority over the configuration made in
PIM view.
Configuring hello message options globally
Step
Enter system view.
1.
Enter PIM view.
2.
Set the DR priority.
3.
Set the neighbor lifetime.
4.
Set the PIM message
5.
propagation delay for a
shared-media LAN.
Set the override interval.
6.
Enable neighbor tracking.
7.
Configuring hello message options on an interface
Step
Enter system view.
1.
Enter interface view.
2.
Set the DR priority.
3.
Set the neighbor lifetime.
4.
Set the PIM message
5.
propagation delay.
Set the override interval.
6.
Enable neighbor tracking.
7.
Enable dropping hello
8.
messages without the
Generation ID option.
Command
system-view
pim [ vpn-instance
vpn-instance-name ]
hello-option dr-priority priority
hello-option holdtime time
hello-option lan-delay delay
hello-option override-interval
interval
hello-option neighbor-tracking
Command
system-view
interface interface-type
interface-number
pim hello-option dr-priority
priority
pim hello-option holdtime time
pim hello-option lan-delay delay
pim hello-option
override-interval interval
pim hello-option
neighbor-tracking
pim require-genid
134
Remarks
N/A
N/A
The default setting is 1.
The default setting is 105
seconds.
The default setting is 500
milliseconds.
The default setting is 2500
milliseconds.
By default, neighbor tracking is
disabled.
Remarks
N/A
N/A
The default setting is 1.
The default setting is 105
seconds.
The default setting is 500
milliseconds.
The default setting is 2500
milliseconds.
By default, neighbor tracking is
disabled.
By default, an interface accepts
hello messages without the
Generation ID option.