HP 6125XLG R2306-HP 6125XLG Blade Switch IP Multicast Configuration Guide - Page 166

Configuring hello message options on an interface, Configuring common IPv6 PIM timers

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Step Command 5. Set the prune message delay. hello-option lan-delay delay 6. Set the override interval. hello-option override-interval interval 7. Enable the neighbor tracking function. hello-option neighbor-tracking Remarks By default, the prune message delay is 500 milliseconds. By default, the override interval is 2500 milliseconds. By default, the neighbor tracking function is disabled. Configuring hello message options on an interface Step 1. Enter system view. 2. Enter interface view. 3. Set the DR priority. 4. Set the neighbor lifetime. 5. Set the prune delay. 6. Set the override interval. 7. Enable the neighbor tracking function. 8. Enable dropping hello messages without the Generation ID option. Command system-view interface interface-type interface-number ipv6 pim hello-option dr-priority priority ipv6 pim hello-option holdtime time ipv6 pim hello-option lan-delay delay ipv6 pim hello-option override-interval interval ipv6 pim hello-option neighbor-tracking ipv6 pim require-genid Remarks N/A N/A By default, the DR priority is 1. By default, the neighbor lifetime is 105 seconds. By default, the prune delay is 500 milliseconds. By default, the override interval is 2500 milliseconds. By default, the neighbor tracking function is disabled. By default, an interface accepts hello message without the Generation ID option. Configuring common IPv6 PIM timers IPv6 PIM routers periodically send hello messages to discover IPv6 PIM neighbors, and maintain IPv6 PIM neighbor relationship. After receiving a hello message, an IPv6 PIM router waits for a random time period before sending a hello message. This random time period is smaller than the maximum delay for sending hello messages, and it can avoids collisions that might occur when multiple IPv6 PIM routers send hello messages simultaneously. An IPv6 PIM router periodically sends join/prune messages to its upstream routers for state update. A join/prune message contains the joined/pruned state timeout value, and an upstream router uses this value to set a timeout timer for the joined state or pruned state of the downstream interfaces. When a router fails to receive subsequent IPv6 multicast data from the IPv6 multicast source S, the router does not immediately remove the corresponding (S, G) entry. Instead, it maintains the (S, G) entry for a period of time (namely, the IPv6 multicast source lifetime) before deleting the (S, G) entry. You can configure common IPv6 PIM timers in IPv6 PIM view or interface view. The configurations made in IPv6 PIM view are effective on all interfaces and the configurations made in interface view are effective 159

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159
Step
Command
Remarks
5.
Set the prune message delay.
hello-option lan-delay
delay
By default, the prune message
delay is 500 milliseconds.
6.
Set the override interval.
hello-option override-interval
interval
By default, the override interval is
2500 milliseconds.
7.
Enable the neighbor tracking
function.
hello-option neighbor-tracking
By default, the neighbor tracking
function is disabled.
Configuring hello message options on an interface
Step
Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter interface view.
interface
interface-type
interface-number
N/A
3.
Set the DR priority.
ipv6 pim hello-option dr-priority
priority
By default, the DR priority is 1.
4.
Set the neighbor lifetime.
ipv6 pim hello-option holdtime
time
By default, the neighbor lifetime is
105 seconds.
5.
Set the prune delay.
ipv6 pim hello-option lan-delay
delay
By default, the prune delay is 500
milliseconds.
6.
Set the override interval.
ipv6 pim hello-option
override-interval
interval
By default, the override interval is
2500 milliseconds.
7.
Enable the neighbor tracking
function.
ipv6 pim hello-option
neighbor-tracking
By default, the neighbor tracking
function is disabled.
8.
Enable dropping hello
messages without the
Generation ID option.
ipv6 pim require-genid
By default, an interface accepts
hello message without the
Generation ID option.
Configuring common IPv6 PIM timers
IPv6 PIM routers periodically send hello messages to discover IPv6 PIM neighbors, and maintain IPv6
PIM neighbor relationship.
After receiving a hello message, an IPv6 PIM router waits for a random time period before sending a
hello message. This random time period is smaller than the maximum delay for sending hello messages,
and it can avoids collisions that might occur when multiple IPv6 PIM routers send hello messages
simultaneously.
An IPv6 PIM router periodically sends join/prune messages to its upstream routers for state update. A
join/prune message contains the joined/pruned state timeout value, and an upstream router uses this
value to set a timeout timer for the joined state or pruned state of the downstream interfaces.
When a router fails to receive subsequent IPv6 multicast data from the IPv6 multicast source S, the router
does not immediately remove the corresponding (S, G) entry. Instead, it maintains the (S, G) entry for a
period of time (namely, the IPv6 multicast source lifetime) before deleting the (S, G) entry.
You can configure common IPv6 PIM timers in IPv6 PIM view or interface view. The configurations made
in IPv6 PIM view are effective on all interfaces and the configurations made in interface view are effective