Setting The Snooping Method (Cli) - Cisco Catalyst 3850 series Configuration Manual

Configuring IGMP

Setting the Snooping Method (CLI)

Multicast-capable router ports are added to the forwarding table for every Layer 2 multicast entry. The device
learns of the ports through one of these methods:
• Snooping on IGMP queries, Protocol-Independent Multicast (PIM) packets
• Statically connecting to a multicast router port using the ip igmp snooping mrouter global configuration
Beginning in privileged EXEC mode, follow these steps to alter the method in which a VLAN interface
accesses a multicast router:
SUMMARY STEPS
1. enable
2. configure terminal
3. ip igmp snooping vlan vlan-id mrouter interface {GigabitEthernet | Port-Channel |
TenGigabitEthernet}
4. end
5. show ip igmp snooping
6. copy running-config startup-config
DETAILED STEPS
Command or Action
Step 1
enable
Example:
Device> enable
Step 2
configure terminal
Example:
Device# configure terminal
Step 3 ip igmp snooping vlan vlan-id mrouter interface
{GigabitEthernet | Port-Channel | TenGigabitEthernet}
Example:
Device(config)# ip igmp snooping
vlan 1 mrouter interface GigabitEthernet1/0/3
OL-32598-01
command
IP Multicast Routing Configuration Guide, Cisco IOS XE Release 3.6E (Catalyst 3850 Switches)
How to Configure IGMP Snooping
Purpose
Enables privileged EXEC mode.
• Enter your password if prompted.
Enters the global configuration mode.
Enables IGMP snooping on a VLAN. The VLAN
ID range is 1 to 1001 and 1006 to 4094.
73