M
ULTICAST
F
ILTERING
3-213
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.
Web – Click IGMP Snooping, Static Multicast Router Port Configuration.
Specify the interfaces attached to a multicast router, indicate the VLAN
which will forward all the corresponding multicast traffic, and then click
Add. After you have finished adding interfaces to the list, click Apply.
Figure 3-96. Static Multicast Router Port Configuration
Console#show ip igmp snooping mrouter vlan 1 4-241
VLAN M'cast Router Port Type
---- ------------------ -------
1 Eth 1/11 Static
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