Antaira Industrial Ethernet Switches
LMP-0501 Series User Manual V1.0
37
5.7.2 802.1Q VLAN Settings
Terms
Value Description
PVID
Users can assign a Port VLAN ID for each port
Filter
Users
can choose any port be “Tagged” or “Untagged”.
Tagged VLAN:
set the tagged PVIDs to carry different
VLAN frames to other switch.
Untagged VLAN:
set the port PVID for untagged devices
that connect to the port. The range of PVID is 1 to 4094.
Click the
“Apply” button to save changes.
5.8. IGMP Snooping
The Internet Group Management Protocol (IGMP) is a communications protocol used to manage
the membership of Internet Protocol multicast groups. IGMP is used by IP hosts and adjacent
multicast routers to establish multicast group memberships.
When IGMP snooping is enabled in a switch, it analyzes all the IGMP packets between hosts
connected to the switch and multicast routers in the network. When a switch receives an IGMP
report for a given multicast group from a host, the switch adds the host's port number to the
multicast list for that group. When the switch hears an IGMP leave, it removes the host's port from
the table entry.
IGMP snooping can reduce multicast traffic from streaming and other bandwidth intensive IP
applications more effectively. A switch using IGMP snooping will only forward multicast traffic to
the hosts in that traffic. This reduction of multicast traffic reduces the packet processing at the
switch (at the cost of needing additional memory to handle the multicast tables) and also
decreases the workload at the end hosts since their network cards (or operating system) will not
Figure 5.39
– 802.1Q VLAN Settings Interface
Figure 5.40
– 802.1Q VLAN settings Terms & Value Description
