Cisco Cisco IOS Software Release 12.2(33)SRE
1
PIM Dense Mode Fallback Prevention in a
Network Following RP Information Loss
Network Following RP Information Loss
The PIM Dense Mode Fallback Prevention in a Network Following RP Information Loss feature enables
you to prevent Protocol Independent Multicast (PIM) dense mode (DM) fallback when all rendezvous
points (RPs) fail. Preventing the use of PIM-DM is very important to multicast networks whose
reliability is critical. The feature provides a mechanism to keep the multicast groups in sparse mode. The
feature also allows you to block multicast traffic for groups not specifically configured.
you to prevent Protocol Independent Multicast (PIM) dense mode (DM) fallback when all rendezvous
points (RPs) fail. Preventing the use of PIM-DM is very important to multicast networks whose
reliability is critical. The feature provides a mechanism to keep the multicast groups in sparse mode. The
feature also allows you to block multicast traffic for groups not specifically configured.
Configuration Information
Configuration information is included in the “Configuring Basic IP Multicast” chapter in the
Cisco IOS
IP Multicast Configuration Guide
, Release 12.4T, at the following URL:
Command Reference Information
Command reference information is included in the
Cisco IOS IP Multicast Command Reference
,
Release 12.2SR, at the following URL:
New or Modified Commands
The following command is modified for this feature:
•
ip pim dm-fallback
Any Internet Protocol (IP) addresses used in this document are not intended to be actual addresses. Any examples, command display output, and
figures included in the document are shown for illustrative purposes only. Any use of actual IP addresses in illustrative content is unintentional and
coincidental.
figures included in the document are shown for illustrative purposes only. Any use of actual IP addresses in illustrative content is unintentional and
coincidental.
© 2006 Cisco Systems, Inc. All rights reserved.