Cisco Systems CL-28826-01 Security Camera User Manual


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User Guide for Cisco Security Manager 4.4
OL-28826-01
Chapter 53 Configuring Multicast Policies on Firewall Devices
Configuring PIM
The PIM bidirectional neighbor filters enable the transition from a sparse-mode-only network to a
“bidir” network by letting you specify the devices that should participate in DF election, while still
allowing all devices to participate in the sparse-mode domain. The bidir-enabled devices can elect a DF
from among themselves, even when there are non-bidir devices on the segment. Multicast boundaries on
the non-bidir devices prevent PIM messages and data from the bidir groups from leaking in or out of the
bidir subset cloud.
Bidirectional PIM allows multicast devices to maintain reduced state information. All of the multicast
devices in a segment must be bidirectionally enabled for bidir to elect a DF.
When a PIM bidirectional neighbor filter is enabled, the routers and other devices that are permitted by
the ACL are considered to be bidir-capable. Therefore:
If a permitted neighbor does not support bidir, the DF election does not occur.
If a denied neighbor supports bidir, then DF election does not occur.
If a denied neighbor does not support bidir, the DF election can occur.
Managing the Bidirectional Neighbor Filter List
On an ASA running version 7.2(1) or later, you can use this panel to define and manage the per-interface
bidirectional neighbor filter list, permitting or denying multicast source addresses for specific interfaces.
Refer to Add/Edit PIM Bidirectional Neighbor Filter Dialog Box, page 53-14 for a description of the
fields on this panel.
Navigation Path
You access the Bidirectional Neighbor Filter tab from the PIM page. For more information, see
Configuring PIM, page 53-11.
Related Topics
PIM Page - Protocol Tab, page 53-11
PIM Page - Neighbor Filter Tab, page 53-12
PIM Page - Rendezvous Points Tab, page 53-15
PIM Page - Route Tree Tab, page 53-17
PIM Page - Request Filter Tab, page 53-18
Add/Edit PIM Bidirectional Neighbor Filter Dialog Box
Use the Add/Edit PIM Bidirectional Neighbor Filter dialog box to add or edit an entry in the bidirectional
neighbor access control list displayed on the PIM Page - Bidirectional Neighbor Filter Tab, page 53-13.
Navigation Path
You can access the Add/Edit PIM Bidirectional Neighbor Filter dialog box from the PIM Page -
Bidirectional Neighbor Filter Tab, page 53-13.
Field Reference
Table 53-13 Add/Edit PIM Bidirectional Neighbor Filter Dialog Box
Element Description
Interface Enter or Select the interface to which this PIM Bidirectional Neighbor
filter entry will be applied.