H3C Technologies H3C SecPath F1000-E - Manual (Page 193)

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• Maximum size of join/prune messages
• 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.
Follow these steps to configure an IPv6 multicast data filter:
To do... Use the command... Remarks
Enter system view system-view —
Enter IPv6 PIM view pim ipv6 —
Configure an IPv6 multicast group
filter
source-policy acl6-number
Required
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 more
and more demanding. The establishment of correct IPv6 PIM neighboring relationships is a prerequisite
for secure application of IPv6 PIM. You can configure a legal source address range for hello messages
on interfaces of routers to ensure the correct IPv6 PIM neighboring relationships and thus to guide
against IPv6 PIM message attacks.
Follow these steps to configure a hello message filter:
To do… Use the command… Remarks
Enter system view system-view —
Enter interface view
interface interface-type
interface-number
—
Configure a hello message filter
pim ipv6 neighbor-policy
acl6-number Required
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.