Configuring the Switch
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Web – Click IGMP Snooping, Multicast Router Port Information. Select the required
VLAN ID from the scroll-down list to display the associated multicast routers.
Figure 3-99 Displaying Multicast Router Port Information
CLI – This example shows that Port 11 has been statically configured as a port
attached to a multicast router.
Specifying Static Interfaces for a Multicast Router
Depending on your network connections, IGMP snooping may not always be able to
locate the IGMP querier. Therefore, if the IGMP querier is a known multicast router/
switch connected over the network to an interface (port or trunk) on your switch, you
can manually configure the interface (and a specified VLAN) to join all the current
multicast groups supported by the attached router. This can ensure that multicast
traffic is passed to all the appropriate interfaces within the switch.
Command Attributes
• Interface – Activates the Port or Trunk scroll down list.
• VLAN ID – Selects the VLAN to propagate all multicast traffic coming from the
attached multicast router.
• Port or Trunk – Specifies the interface attached to a multicast router.
Console#show ip igmp snooping mrouter vlan 1 4-210
VLAN M'cast Router Port Type
---- ------------------ -------
1 Eth 1/11 Static
Console#
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