UMN:CLI
User Manual
V5824G
374
9.3.2.3
Neighbor Filtering
If necessary, you can filter neighbor routers using access lists. When you enable this
feature, PIM establishes adjacency without neighbor routers specified as deny in access
lists.
To enable filtering neighbor routers in PIM, use the following command.
Command
Mode
Description
ip pim neighbor-filter
{<1-99> |
WORD
}
Interface
Enables filtering neighbor routers in PIM.
1-99: IP standard access list
WORD: access list name
no ip pim neighbor-filter
{<1-99>
|
WORD
}
Disables filtering neighbor routers in PIM.
To display the information of PIM neighbor routers, use the following command.
Command
Mode
Description
show ip pim neighbor
[
detail
]
Enable
Global
Bridge
Shows the information for PIM neighbor routers.
9.3.2.4
PIM Join/Prune Message Group Filtering
If necessary, you can filter PIM join/prune messages from seperate group using access
lists. When you enable this feature, a specifid PIM group of PIM join/prune messages
from the trusted neighbor are denied by a specified range of access lists.
To enable PIM group filtering, use the following command.
Command
Mode
Description
ip pim group-filter
{<1-99> |
WORD
}
Interface
Enables PIM group filtering to block PIM join/prune
messages using a specified access list.
1-99: IP standard access list
WORD: access list name
ip pim group-filter range
{<1-
1024> |
WORD
}
Enables PIM group filtering to block PIM join/prune
messages using a specified range of access lists.
1-1024: IP standard access list range
WORD: IP access-list-range name
no ip pim group-filter
[
range
]
Disables PIM group filtering.
For more information of Standard Access List and Access List Range, see Section 7.18.1
and 7.18.4.
9.3.2.5
PIM Hello Message
PIM routers periodically send PIM hello messages to discover neighboring PIM routers
and to determine which router will be the DR for each subnet. PIM hello messages are
also the multicast packets using the group address 224.0.0.13 (all PIM routers group).
!
