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Cisco 819 Series Integrated Services Routers Software Configuration Guide
OL-23590-02
Chapter 10 Configuring the Ethernet Switches
How to Configure Ethernet Switches
Configuring the Switched Port Analyzer
For information on how to configure a switched port analyzer (SPAN) session, see Configuring the
Switched Port Analyzer (SPAN).
This section contains information on the following topics:
• Configuring the SPAN sources
• Configuring SPAN destinations
• Verifying the SPAN session
• Removing sources or destinations from a SPAN session
Configuring IP Multicast Layer 3 Switching
For information on how to configure IP multicast Layer 3 switching, see Configuring IP Multicast Layer
3 Switching.
This section contains information on the following topics:
• Enabling IP multicast routing globally
• Enabling IP protocol-independent multicast (PIM) on Layer 3 interfaces
• Verifying IP multicast Layer 3 hardware switching summary
• Verifying the IP multicast routing table
Configuring IGMP Snooping
For information on how to configure IGMP snooping, see Configuring IGMP Snooping.
This section contains information on the following topics:
• Enabling or disabling IGMP snooping
• Enabling IGMP immediate-leave processing
• Statically configuring an interface to join a group
• Configuring a multicast router port
IGMP Version 3
In support of the IGMPv3 feature in Cisco IOS Release 12.4(15)T, the groups and count keywords were
added to the show ip igmp snooping command, and the output of the show ip igmp snooping command
was modified to include global information about IGMP snooping groups. Use the show ip igmp
snooping command with the groups keyword to display the multicast table learned by IGMP snooping
for all VLANs or the show ip igmp snooping command with the groups keyword, vlan-id keyword, and
vlan-id argument to display the multicast table learned by IGMP snooping for a specific VLAN. Use the
show ip igmp snooping command with the groups and count keywords to display the number of
multicast groups learned by IGMP snooping.
Configuring Per-Port Storm Control
For information on how to configure per-port storm control, see Configuring Per-Port Storm-Control.