3com 8807 사용자 가이드

C

HAPTER

 44: PIM-SM C

ONFIGURATION

Refer to “Configuring the Filtering of Multicast Source/Group” “Configuring the 
Filtering of Multicast Source/Group”.

Refer to “Configuring the Filtering of PIM Neighbor” “Configuring the Filtering of 
PIM Neighbor”.

Refer to “Configuring the Maximum Number of PIM Neighbor on an Interface” 
“Configuring the Maximum Number of PIM Neighbor on an Interface”.

In the PIM-SM network, the register message filtering mechanism can control 
which sources to send messages to which groups on the RP, i.e., RP can filter the 
register messages sent by DR to accept specified messages only.

Perform the following configuration in PIM view.

If an entry of a source group is denied by the ACL, or the ACL does not define 
operation to it, or there is no ACL defined, the RP will send RegisterStop messages 
to the DR to prevent the register process of the multicast data stream.

c 

To prevent the legal BSR from being replaced maliciously in the network, you can 
limit the range of legal BSR. Other BSR messages beyond the range are not 
received by the router and thus ensure the BSR security.

Perform the following configuration in PIM view.

For detailed information of bsr-policy, refer to the 3Com Switch 8800 Family 
Series Routing Switches Command Manual.

To avoid C-RP spoofing, you can limit the range of legal C-RP and limit the groups 
that each C-RP servers.

Perform the following configuration in PIM view.

Table 461   Configure RP to filter the register messages sent by DR

Configure RP to filter the register messages sent by DR 

register-policy acl-number 

Cancel the configured filter of messages 

Table 462   Limit the range of legal BSR

Set the limit legal BSR range 

bsr-policy acl-number 

Restore to the default setting