120 MES1000, MES2000 Ethernet Switches
Example execution of commands
Enable multicast address filtering by the switch. Specify the MAC address lifetime 450 seconds,
enable forwarding of unregistered multicast packets for the switch port 11.
console # configure
console(config) # bridge aging-time 450
console(config) # bridge multicast filtering
console(config) # interface gigabitethernet 1/0/11
console(config-if) # bridge multicast unregistered forwarding
console# show bridge multicast address-table format ip
Vlan IP/MAC Address type Ports
---- ----------------------- ----- -------------------
1 224-239.130|2.2.3 dynamic 1/1, 2/2
19 224-239.130|2.2.8 static 1/1-8
19 224-239.130|2.2.8 dynamic 1/9-11
Forbidden ports for multicast addresses:
Vlan IP/MAC Address Ports
---- ------------------- -------------------
1 224-239.130|2.2.3 2/8
19 224-239.130|2.2.8 2/8
5.18.2 IGMP snooping function
IGMP Snooping is used in multicast networks. The main task of IGMP Snooping is the provisioning of
multicast traffic only for those ports, that have requested it.
IGMP Snooping can be used only in the static VLAN group. IGMP protocol supported
versions—IGMPv1, IGMPv2, IGMPv3.
Identification of ports with connected multicast routers is based on the following events:
– IGMP requests were received through the port
– Protocol Independent Multicast (PIM/PIMv2) protocol packets were received through the port
– Multicast routing packets of Distance Vector Multicast Routing Protocol (DVMRP) protocol were
received through the port
– MRDISC protocol packets were received through the port
– Multicast Open Shortest Path First (MOSPF) protocol packets were received through the port
Global configuration mode commands
Command line request in global configuration mode appears as follows:
console(config)#
Table 5.120 —Global configuration mode commands
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