3Com 5500-SI Configuration Manual page 344

344 C 18: M
HAPTER ULTICAST
P
ROTOCOL
Configuring Static RP
Static RP serves as the backup of dynamic RP, so as to improve network robusticity.
Perform the following configuration in PIM view.
Table 355 Configuring
Operation
Configure static RP
Remove the configured static RP
Basic ACL can control the range of multicast group served by static RP.
If static RP is in use, all routers in the PIM domain must adopt the same configuration.
If the configured static RP address is the interface address of the local router whose
state is UP, the router will function as the static RP. It is unnecessary to enable PIM on
the interface that functions as static RP.
When the RP elected from BSR mechanism is valid, static RP does not work.
Configuring the Sending Interval for the Hello Packets of the Interface
Generally, PIM-SM advertises Hello messages periodically on the interface enabled
with it to detect PIM neighbors and discover which router is the Designated Router
(DR).
Perform the following configuration in Interface view.
Table 356 Configuring the sending interval for the Hello packets of the interface
Operation
Configure the sending interval for the Hello
packets of the interface
Restore the interval to the default value
By default, the hello message interval is 30 seconds. Users can configure the value
according to different network environments.
This configuration can be performed only after the PIM (PIM-DM or PIM-SM) is
enabled in Interface view.
Configuring the Filtering of Multicast Source/Group
Refer to "PIM-DM Overview" on page 333.
Configuring the Filtering of PIM Neighbor
Refer to "PIM-DM Overview" on page 333.
Configuring the Maximum Number of PIM Neighbor on an Interface
Refer to "PIM-DM Overview" on page 333.
Configuring RP to Filter the Register Messages Sent by DR
In the PIM-SM network, the register message filtering mechanism can control which
sources to send messages to which groups on the RP, that is, RP can filter the register
messages sent by DR to accept specified messages only.
static RP
Command
static-rp rp_address [ acl_number ]
undo static-rp rp_address
Command
pim timer hello seconds
undo pim timer hello