H3C Technologies H3C SecPath F1000-E - Manual (Page 890)

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• Determine the maximum size of join/prune messages.
• Determine the maximum number of (S, G) entries in a join/prune message.
Configuring an IPv6 multicast data filter
No matter in an IPv6 PIM-DM domain or an IPv6 PIM-SM domain, routers can check passing-by IPv6
multicast data based on the configured filtering rules and determine whether to continue forwarding the
IPv6 multicast data. In other words, IPv6 PIM routers can act as IPv6 multicast data filters. These filters can
help implement traffic control on one hand, and control the information available to downstream
receivers to enhance data security on the other hand.
To configure an IPv6 multicast data filter:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter IPv6 PIM view. pim ipv6 N/A
3. Configure an IPv6 multicast
group filter.
source-policy acl6-number
No IPv6 multicast data filter by
default
NOTE:
•
Generally, a smaller distance from the filter to the IPv6 multicast source results in a more remarkable
filtering effect.
• This filter works not only on independent IPv6 multicast data but also on IPv6 multicast data
encapsulated in register messages.
Configuring a hello message filter
Along with the wide applications of IPv6 PIM, the security requirement for the protocol is becoming
increasingly demanding. The establishment of correct IPv6 PIM neighboring relationships is a
prerequisite for secure application of IPv6 PIM. To guard against IPv6 PIM message attacks, you can
configure a legal source address range for hello messages on interfaces of routers to ensure the correct
IPv6 PIM neighboring relationships.
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
3. Configure a hello message
filter.
pim ipv6 neighbor-policy
acl6-number
No hello message filter by default
NOTE:
With the hello message filter configured, if hello messages of an existing IPv6 PIM neighbor fail to pass the
filter, the IPv6 PIM neighbor will be removed automatically when it times out.