User`s manual

140 Asanté IntraCore 36000 Series
Query interval : 100 sec
Query max response time : 20 sec
Router port expire time : 300 sec
IGMP snooping version : Version 2
Console#
12.1.2 Displaying Interfaces Attached to a Multicast Router
Multicast routers that are attached to ports on the switch use information obtained from IGMP, along with a
multicast routing protocol such as DVMRP or PIM, to support IP multicasting across the Internet. These
routers may be dynamically discovered by the switch or statically assigned to an interface on the switch.
You can use the Multicast Router Port Information page to display the ports on this switch attached to a
neighboring multicast router/switch for each VLAN ID.
Command Attributes
VLAN ID – ID of configured VLAN (1-4094).
Multicast Router List – Multicast routers dynamically discovered by this switch or those that are statically
assigned to an interface on this switch.
Configuring Switch Using the Web or CLI
Web
Click IGMP Snooping – Multicast Router Port Information. Select the required VLAN ID from the scroll-
down list to display the associated multicast routers.
CLI
This example shows that Port 11 has been statically configured as a port attached to a multicast router.
Console#show ip igmp snooping mrouter vlan 1
VLAN M'cast Router Port Type
---- ------------------ -------
1 Eth 1/11 Static
console#
12.1.3 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.