Multicast
Multicast Router Ports
337 Cisco 500 Series Managed Switch Administration Guide
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Multicast Router Ports
A Multicast router (Mrouter) port is a port that connects to a Multicast router. The 
device includes the Multicast router port(s) numbers when it forwards the 
Multicast streams and IGMP/MLD registration messages. This is required so that 
the Multicast routers can, in turn, forward the Multicast streams and propagate the 
registration messages to other subnets.
To statically configure or see dynamically-detected ports connected to the 
Multicast router:
STEP 1 Click Multicast > Multicast Router Port.
STEP  2 Enter some or all of following query filter criteria:
• VLAN ID equals to—Select the VLAN ID for the router ports that are 
described.
• IP Version equals to—Select the IP version that the Multicast router 
supports.
• Interface Type equals to—Select whether to display ports or LAGs.
STEP  3 Click Go. The interfaces matching the query criteria are displayed.
STEP  4 For each port or LAG, select its association type. The options are as follows:
• Static—The port is statically configured as a Multicast router port.
• Dynamic—(Display only) The port is dynamically configured as a Multicast 
router port by a MLD/IGMP query. To enable the dynamic learning of 
Multicast router ports, go to the Multicast > IGMP Snooping page, and the 
Multicast > MLD Snooping page
• Forbidden—This port is not to be configured as a Multicast router port, even 
if IGMP or MLD queries are received on this port. If Forbidden is enabled on 
a port, Mrouter is not learned on this port (i.e. MRouter Ports Auto-Learn is not 
enabled on this port).
• None—The port is not currently a Multicast router port.
STEP  5 Click Apply to update the device.