Configuring The Threshold To Switch From Rpt To Spt; Configuring Bsr Policy - 3Com 3C13636 Configuration Manual

3Com Router 3000 Ethernet Family
Configuration Guide
If the entry (S, G) of a source group is denied or not defined by the ACL, or there is no
ACL, the RP will send RegisterStop information to the DR to stop the registration of this
multicast data stream.
Caution:
Only the register packets matching the ACL permit clause will be accepted by the RP.
Specifying an undefined ACL will cause the RP to deny all register packets.

4.3.14 Configuring the Threshold to Switch from RPT to SPT

The PIM-SM routers use the shared tree to forward multicast data packets initially. If the
traffic rate exceeds the specified threshold, the last hop router the packet passes will
initiate the switch from the shared tree to the shortest path tree.
Perform the following configuration in PIM view.
Table 4-14 Configure the threshold to switch from the RPT to the SPT
Set the threshold to switch from the RPT
to the SPT
Restore the default configuration
By default, the threshold is 0. In that case, the last hop router turns to the shortest path
tree when it receives the first multicast datagram.

4.3.15 Configuring BSR Policy

To prevent the valid BSRs from being maliciously replaced or BSR spoofing, BSR
policy can be configured to specify the valid BSR range. Information from BSRs out of
this range will not be accepted.
Perform the following configuration in the appropriate view.
Table 4-15 Configuring BSR policy
Specify the range of valid BSRs (in PIM
view)
Restore the normal state without any
range limitation (in PIM view)
Operation
Operation
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4-12
Chapter 4 PIM Configuration
Command
spt-switch-threshold { traffic-rate |
infinity } [ group-policy acl-number ]
undo spt-switch-threshold { traffic-rate
| infinity } [ group-policy acl-number ]
Command
bsr-policy acl-number
undo bsr-policy