Configuring A Hello Message Filter; Configuring Ipv6 Pim Hello Options - HP MSR ASM Configuration Manual

multicast data. In other words, IPv6 PIM routers can act as IPv6 multicast data filters. These filters can help
implement traffic control and also control the information available to downstream receivers to enhance
data security.
Generally, a smaller distance from the filter to the IPv6 multicast source results in a more remarkable
filtering effect.
To configure an IPv6 multicast data filter:
Step
1. Enter system view.
2. Enter IPv6 PIM view.
3. Configure an IPv6 multicast
group filter.

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 relationship 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 relationship.
To configure a hello message filter:
Step
1. Enter system view.
Enter interface view.
2.
3. Configure a hello message
filter.

Configuring IPv6 PIM hello options

In either an IPv6 PIM-DM domain or an IPv6 PIM-SM domain, hello messages exchanged among routers
contain the following configurable options:
DR_Priority (for IPv6 PIM-SM only)—Priority for DR election. The device with the highest priority
•
wins the DR election. You can configure this option for all the routers in a shared-media LAN that
directly connects to the IPv6 multicast source or the receivers.
Command
system-view
pim ipv6
source-policy acl6-number
Command
system-view
interface interface-type
interface-number
pim ipv6 neighbor-policy
acl6-number
336
Remarks
N/A
N/A
No IPv6 multicast data filter by
default.
This filter works not only on
independent IPv6 multicast data
but also on IPv6 multicast data
encapsulated in register messages.
Remarks
N/A
N/A
No hello message filter by default.
When the hello message filter is
configured, if the 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.