M
ULTICAST
F
ILTERING
14-6
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 14-2 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.
Console#show ip igmp snooping mrouter vlan 1 33-12
VLAN M'cast Router Port Type
---- ------------------ -------
1 Eth 1/11 Static
Console#
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