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Click All Together button then all the ports of the switch will be added to VLAN
group 1.
- All Independent
Click All Independent button then all the ports will be divided into separated
subnets (totally 18 subnets).
Every port can belong to different Port Group VLANs simultaneously without limitation.
4.10 IGMP Snooping
Multicasting is widely used to support multi-media applications such as video
conferencing. The multicasting simply broadcasts its services to the group of a network
instead of establishing connections separately with every host that subscribed the
services. With no Multicast Filtering-aware switches, a multicast server may floods
broadcast-data overall the broadcast domain and wastes a lot of bandwidth.
The Internet Group Management Protocol (IGMP) snooping uses the protocol to make
switches join/leave multicast group and interacts switches to optimize the network
performance by monitoring the IGMP packets and forward to the ports containing
multicast hosts or switches. This will efficiently reduce the multicast traffic rather than
flooding overall network. IGMP snooping is more and more important especially when the
multi-media demand is booming.
NOTE: As IGMP Snooping only operates under 802.1Q VLAN mode, please change
VLAN mode from Port Group VLAN to 802.1Q VLAN before enabling IGMP
Snooping.
4.11 Port Aggregation
Port Aggregation (Port Trunk) is used to increase the bandwidth of a switch-to-switch
connection and backup. This switch provides 7 port aggregation groups, which consist of
4 ports and create bandwidth up to 800Mbps per group (the group 6 consists of 2 slide-in
slots and creates bandwidth up to 4Gbps) at full duplex mode. Check the box of
Aggregation Group in the Status Enable column and press "Apply" then the selected
Aggregation Group is activated.
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