PIM Dense Mode Fallback Prevention in a Network Following RP Information Loss

Table Of Contents

PIM Dense Mode Fallback Prevention in a Network Following RP Information Loss

PIM Dense Mode Fallback Prevention in a Network Following RP Information Loss

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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.

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:

•http://www.cisco.com/univercd/cc/td/doc/product/software/ios124/124tcg/timc_c/mcbba_ht.htm

Command Reference Information

Command reference information is included in the Cisco IOS IP Multicast Command Reference, Release 12.2SR, at the following URL:

•http://www.cisco.com/univercd/cc/td/doc/product/software/ios122sr/cr/sripr_r/index.htm

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.

© 2006 Cisco Systems, Inc. All rights reserved.