Configuring A Multicast Data Filter; Configuring A Hello Message Filter; Configuring Pim Hello Message Options - HP MSR2003 Configuration Manual

Configuring a multicast data filter

To control multicast traffic and the information available to downstream receivers, you can configure a
PIM router as a multicast data filter. Then, the router will check IP packets that pass by and forward or
discard the packets based on the filtering policy.
A filter can filter not only independent multicast data but also multicast data encapsulated in register
messages. Generally, a filter nearer to the multicast source has a better filtering effect.
To configure a multicast data filter:
Step
1. Enter system view.
2. Enter PIM view.
3. Configure a multicast data
filter:

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.
To guard against PIM message attacks, you can configure a legal source address range for hello
messages on interfaces of routers to ensure the correct PIM neighboring relationships.
To configure a hello message filter:
Step
1. Enter system view.
2. Enter interface view.
3. Configure a hello message
filter.

Configuring PIM hello message options

In either a PIM-DM domain or a PIM-SM domain, hello messages exchanged among routers contain the
following configurable options:
DR_Priority (for 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 multicast source or the receivers.
Command
system-view
pim [ vpn-instance
vpn-instance-name ]
source-policy acl-number
Command
system-view
interface interface-type
interface-number
pim neighbor-policy acl-number
110
Remarks
N/A
N/A
By default, no multicast data filter is
configured.
Remarks
N/A
N/A
By default, no hello message filter
exists.
If a PIM neighbor's hello messages
cannot pass the filter, the neighbor
is automatically removed when its
maximum number of hello attempts
is reached.