Cisco Catalyst 3850 series User Manual

Example: Interface Configuration as an SVI
This example shows how to configure an interface on the device as an SVI. This configuration is required on
the interface for several IP multicast routing configuration procedures that require running the no switchport
command.
Device(config)# interface vlan 150
Device(config-if)# ip address 20.20.20.1 255.255.255.0
Device(config-if)# ip pim sparse-dense-mode
Device(config-if)# ip igmp join-group 224.1.2.3 source 15.15.15.2
Device(config-if)# end
Device# configure terminal
Device(config)# ip igmp snooping vlan 20 static 224.1.2.3
interface gigabitEthernet 1/0/9
Device# show run interface vlan 150
Current configuration : 137 bytes
!
interface Vlan150
ip address 20.20.20.1 255.255.255.0
ip pim sparse-dense-mode
ip igmp static-group 224.1.2.3 source 15.15.15.2
end
Example: Configuring the Device to Forward Multicast Traffic in the Absence
of Directly Connected IGMP Hosts
The following example shows how to configure a device to forward multicast traffic in the absence of directly
connected IGMP hosts using the ip igmp join-group command. With this method, the device accepts the
multicast packets in addition to forwarding them. Accepting the multicast packets prevents the device from
fast switching.
In this example, Fast Ethernet interface 0/0/0 on the device is configured to join the group 225.2.2.2:
interface FastEthernet0/0/0
ip igmp join-group 225.2.2.2
The following example shows how to configure a device to forward multicast traffic in the absence of directly
connected IGMP hosts using the ip igmp static-group command. With this method, the device does not
accept the packets itself, but only forwards them. Hence, this method allows fast switching. The outgoing
interface appears in the IGMP cache, but the device itself is not a member, as evidenced by lack of an “L”
(local) flag in the multicast route entry.
In this example, static group membership entries for group 225.2.2.2 are configured on Fast Ethernet interface
0/1/0:
interface FastEthernet0/1/0
ip igmp static-group 225.2.2.2
Controlling Access to an SSM Network Using IGMP Extended Access Lists
This section contains the following configuration examples for controlling access to an SSM network using
IGMP extended access lists:
IP Multicast Routing Configuration Guide, Cisco IOS XE Release 3.6E (Catalyst 3850 Switches)
96 OL-32598-01
Configuring IGMP
Example: Interface Configuration as an SVI

Cisco Catalyst 3850 series Specifications

General

Brand	Cisco
Model	Catalyst 3850 series
Category	Switch
Language	English