3com 8807 Guia De Referência
618
C
HAPTER
36: PIM C
ONFIGURATION
C
OMMANDS
be BSR, thus the routers cannot receive or forward BSR messages other than
these two. Even legal BSRs cannot contest with them.
these two. Even legal BSRs cannot contest with them.
Problems may still exist if a legal BSR is attacked, though these two measures can
effectively guarantee high BSR security.
effectively guarantee high BSR security.
The source parameter in the rule command is translated as BSR address in the
bsr-policy command.
bsr-policy command.
Related command: acl and rule.
Example
# Configure BSR filtering policy on routers, only 101.1.1.1/32 can be BSR and all
others are illegal.
others are illegal.
<SW8800> system-view
System View: return to User View with Ctrl+Z.
[SW8800] multicast routing-enable
[SW8800]pim
[3Com-pim] bsr-policy 2000
[3Com-pim] quit
[SW8800] acl number 2000
[3Com-acl-basic-2000] rule 0 permit source 101.1.1.1 0
c-bsr
Syntax
c-bsr interface-type interface-number hash-mask-len [ priority ]
undo c-bsr
View
PIM view
Parameter
interface-type interface-number:. Interface type and interface number, used to
specify the interface. The candidate BSR is configured on the interface. PIM-SM
must be enabled on the interface first.
specify the interface. The candidate BSR is configured on the interface. PIM-SM
must be enabled on the interface first.
hash-mask-len: Length of the mask. The value ranges from 0 to 32.
priority: Priority of the candidate BSR. The larger the value of the priority, the
higher the priority of the BSR. The value ranges from 0 to 255. By default, the
priority is 0.
higher the priority of the BSR. The value ranges from 0 to 255. By default, the
priority is 0.
Description
Use the c-bsr command to configure a candidate BSR.
Use the undo c-bsr command to remove the candidate BSR configured.
By default, no candidate BSR is set.
When configure the candidate BSR, the larger bandwidth should be guaranteed
since a great amount of information will be exchanged between BSR and other
devices in the PIM domain.
since a great amount of information will be exchanged between BSR and other
devices in the PIM domain.