Cisco 7604 Configuration Manual page 429

Chapter 28 Configuring IPv4 Multicast Layer 3 Switching
Egress mode is not compatible with QoS or SPAN. When QoS is configured, egress replication can result
Note
in the incorrect COS or DSCP marking of packets. When SPAN is configured, egress replication can
result in multicast packets not being sent to the SPAN destination port. If you are using QoS or SPAN
and your switching modules are capable of egress replication, enter the mls ip multicast
replication-mode ingress command to force ingress replication.
During a change from egress- to ingress-replication mode, traffic interruptions may occur because the
shortcuts will be purged and reinstalled. To avoid interruptions in traffic forwarding, enter the mls ip
multicast replication-mode ingress command in global configuration mode. This command forces the
system to operate in ingress-replication mode.
The no form of the mls ip multicast replication-mode ingress command restores the system to
automatic detection mode.
To enable IP multicast Layer 3 switching, perform this task:
Command
Step 1
Router(config)# mls ip multicast replication-mode
[egress | ingress]
Step 2
Router# show mls ip multicast capability
Step 3
Router# show mls ip multicast summary
This example shows how to enable the replication mode:
Router (config)# mls ip multicast replication-mode egress
Router# show mlp ip multicast capability
Current mode of replication is Ingress
Configured replication mode is Egress
Slot
Router# show mls ip multicast summary
4 MMLS entries using 656 bytes of memory
Number of partial hardware-switched flows:2
Number of complete hardware-switched flows:2
Directly connected subnet entry install is enabled
Current mode of replication is Ingress
Auto-detection of replication mode is enabled
Consistency checker is enabled
Router (config)#
OL-4266-08
Multicast replication capability
2
3
4
5
6
Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SX
Purpose
Specifies the replication mode.
Release 12.2(18)SXF and later releases support
Note
the egress keyword.
Displays the configured replication mode.
Displays the replication mode and if automatic detection
is enabled or disabled.
Egress
Egress
Ingress
Egress
Egress
Configuring IPv4 Multicast Layer 3 Switching
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