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Catalyst 6500 Series Switch Cisco IOS Software Configuration Guide—Release 12.1 E
78-14099-04
Chapter 18 Configuring IP Multicast Layer 3 Switching
Configuring IP Multicast Layer 3 Switching
(10.1.0.19, 224.2.2.19) Incoming interface: Vlan10, Packets switched: 1970
Hardware switched outgoing interfaces:
MFD installed: Vlan10
(10.1.0.11, 224.2.2.11) Incoming interface: Vlan10, Packets switched: 0
Hardware switched outgoing interfaces:
MFD installed: Vlan10
(10.1.0.10, 224.2.2.10) Incoming interface: Vlan10, Packets switched: 2744
Hardware switched outgoing interfaces:
MFD installed: Vlan10
(10.1.0.17, 224.2.2.17) Incoming interface: Vlan10, Packets switched: 3340
Hardware switched outgoing interfaces:
MFD installed: Vlan10
(10.1.0.13, 224.2.2.13) Incoming interface: Vlan10, Packets switched: 0
Hardware switched outgoing interfaces:

This example shows how to display the IP multicast Layer 3 switching statistics:

Router# show mls ip multicast statistics
MLS Multicast Operation Status:
MLS Multicast configuration and state:
Router Mac: 00e0.b0ff.7b00, Router IP: 33.0.33.24
MLS multicast operating state: ACTIVE
Shortcut Request Queue size 4
Maximum number of allowed outstanding messages: 1
Maximum size reached from feQ: 3096
Feature Notification sent: 1
Feature Notification Ack received: 1
Unsolicited Feature Notification received: 0
MSM sent: 205170
MSM ACK received: 205170
Delete notifications received: 0
Flow Statistics messages received: 35211
MLS Multicast statistics:
Flow install Ack: 996508
Flow install Nack: 1
Flow update Ack: 1415959
Flow update Nack: 0
Flow delete Ack: 774953
Complete flow install Ack: 958469
Router#
Using Debug Commands

Table 18-2 describes IP multicast Layer 3 switching-related debug commands that you can use to

troubleshoot IP multicast Layer 3 switching problems.

Table 18-2 IP Multicast Layer 3 Switching Debug Commands

Command Description

[no] debug mls ip multicast events Displays IP multicast Layer 3 switching events.
[no] debug mls ip multicast errors Turns on debug messages for multicast MLS-related errors.