H3C Technologies H3C S3600 Series Switches - Manual (Page 422)

4-17
To do... Use the command... Remarks
Configure a filtering rule to
filter PIM neighbors pim neighbor-policy
acl-number
Optional
By default, no filtering rule is
configured.
If the number of existing PIM neighbors exceeds the user-defined limit, the existing PIM neighbors will
not be deleted.
Configuring Multicast Source Lifetime
Initially, some data is lost when multicast receivers receive multicast data from a multicast source. The
reason is that (S, G) entries in the PIM routing table and multicast routing table age out if no data stream
is received within a configurable period of time, known as multicast source lifetime or (S, G) aging time.
These entries need to be reestablished before the corresponding multicast data can be forwarded by
the multicast switch again. In the process of table entry reestablishment, some data may be lost.
If the multicast source lifetime is appropriately lengthened when the data traffic has stopped, the
multicast data, when arriving at the multicast switch again, can be forwarded by the switch without the
need of reestablishing the table entries. This helps avoid data loss.
Follow these steps to configure multicast source lifetime:
To do... Use the command... Remarks
Enter system view system-view —
Enter PIM view pim —
Configure multicast source
lifetime
source-lifetime interval
Optional
210 seconds by default
The configured multicast source lifetime applies to all (S, G) entries in the PIM routing table and the
multicast routing table rather than to a specific (S, G) entry, and the configuration changes the aging
time of all the existing (S, G) entries.
Configuring PIM Prune Delay
The PIM prune delay function is applicable only to PIM-SM networks, but not to PIM-DM networks.