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Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SX
OL-4266-08
Chapter 28 Configuring IPv4 Multicast Layer 3 Switching
Configuring IPv4 Multicast Layer 3 Switching
• If the ingress interface of a (S,G) or (*,G) entry is null, except if the (*,G) entry is a IPv4
bidirectional PIM entry and the router is the RP for the group.
• For IPv4 bidirectional PIM entries when a DF interface or RPF interface is a tunnel.
• With a PFC2, NAT translations for multicast packets is handled in software.
• With a PFC2, GRE tunnel encapsulation and de-encapsulation for multicast packets is handled in
software.
• With a PFC3 and releases earlier than Release 12.2(18)SXE, GRE tunnel encapsulation and
de-encapsulation for multicast packets is handled in software.
• Supervisor Engine 32 does not support egress multicast replication and cannot detect the multicast
replication mode.
Unsupported Features
If you enable IP multicast Layer 3 switching, IP accounting for Layer 3 interfaces does not report
accurate values. The show ip accounting command is not supported.
Configuring IPv4 Multicast Layer 3 Switching
These sections describe how to configure IP multicast Layer 3 switching:
• Source-Specific Multicast with IGMPv3, IGMP v3lite, and URD, page 28-10
• Enabling IPv4 Multicast Routing Globally, page 28-10
• Enabling IPv4 PIM on Layer 3 Interfaces, page 28-10
• Enabling IP Multicast Layer 3 Switching on Layer 3 Interfaces, page 28-11
• Configuring the Replication Mode, page 28-12
• Enabling Local Egress Replication, page 28-14
• Configuring the Layer 3 Switching Global Threshold, page 28-15
• Enabling Installation of Directly Connected Subnets, page 28-15
• Specifying the Flow Statistics Message Interval, page 28-16
• Configuring IPv4 Bidirectional PIM, page 28-23
• Setting the IPv4 Bidirectional PIM Scan Interval, page 28-24
• Enabling Shortcut-Consistency Checking, page 28-16
• Configuring ACL-Based Filtering of RPF Failures, page 28-17
• Displaying RPF Failure Rate-Limiting Information, page 28-17
• Configuring Multicast Boundary, page 28-18
• Displaying IPv4 Multicast Layer 3 Hardware Switching Summary, page 28-18
• Displaying the IPv4 Multicast Routing Table, page 28-21
• Displaying IPv4 Multicast Layer 3 Switching Statistics, page 28-22
• Displaying IPv4 Bidirectional PIM Information, page 28-25
• Using IPv4 Debug Commands, page 28-27
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