H3C Technologies H3C S12500 Series Switches - Manual (Page 168)

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• Determine the hello interval (global value/interface level value).
• Determine the maximum delay between hello messages (interface level value).
• Determine the assert timeout time (global value/interface value).
• Determine the join/prune interval (global value/interface level value).
• Determine the join/prune timeout (global value/interface value).
• Determine the multicast source lifetime.
• Determine the maximum size of join/prune messages.
• Determine the maximum number of (S, G) entries in a join/prune message.
Configuring a multicast data filter
No matter in a PIM-DM domain or a PIM-SM domain, routers can check passing-by multicast data based
on the configured filtering rules and determine whether to continue forwarding the multicast data. You
can configure PIM routers as multicast data filters to help implement traffic control and to control the
information available to receivers downstream for security.
To configure a multicast data filter:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter public network PIM view
or VPN instance PIM view. pim [ vpn-instance
vpn-instance-name ]
N/A
3. Configure a multicast group
filter.
source-policy acl-number No multicast data filter by default.
NOTE:
•
Generally, a smaller distance from the filter to the multicast source results in a more remarkable filtering
effect.
• This filter works not only on independent multicast data but also on multicast data encapsulated in
register messages.
Configuring a hello message filter
Along with the wide applications of PIM, the security requirement for the protocol is becoming
increasingly demanding. The establishment of correct PIM neighboring relationships is the prerequisite
for secure application of PIM. You can configure a legal source address range for hello messages on
interfaces of routers to ensure the correct PIM neighboring relationships, and thus to guard against PIM
message attacks.
To configure a hello message filter:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter interface view.
interface interface-type
interface-number
N/A