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◆ Eliminate broadcast storms which severely degrade performance in a flat network.
◆ Simplify network management for node changes/moves by remotely configuring VLAN
membership for any port, rather than having to manually change the network connection.
◆ Provide data security by restricting all traffic to the originating VLAN.
◆ Use private VLANs to restrict traffic to pass only between data ports and the uplink ports,
thereby isolating adjacent ports within the same VLAN, and allowing you to limit the total
number of VLANs that need to be configured.
◆ Use protocol VLANs to restrict traffic to specified interfaces based on protocol type.
IEEE 802.1Q TUNNELING (QINQ)
This feature is designed for service providers carrying traffic for multiple customers across
their networks. QinQ tunneling is used to maintain customer-specific VLAN and Layer 2
protocol configurations even when different customers use the same internal VLAN IDs.
This is accomplished by inserting Service Provider VLAN (SPVLAN) tags into the
customer’s frames when they enter the service provider’s network, and then stripping the
tags when the frames leave the network.
TRAFFIC PRIORITIZATION
This switch prioritizes each packet based on the required level of service, using four priority
queues with strict or Weighted Round Robin queuing. It uses IEEE 802.1p and 802.1Q tags
to prioritize incoming traffic based on input from the end-station application. These functions
can be used to provide independent priorities for delay-sensitive data and best-effort data.
This switch also supports several common methods of prioritizing layer 3/4 traffic to meet
application requirements. Traffic can be prioritized based on the priority bits in the IP
frame’s Type of Service (ToS) octet or the number of the TCP/UDP port. When these
services are enabled, the priorities are mapped to a Class of Service value by the switch,
and the traffic then sent to the corresponding output queue.
QUALITY OF SERVICE
Differentiated Services (DiffServ) provides policy-based management mechanisms used for
prioritizing network resources to meet the requirements of specific traffic types on a per-hop
basis. Each packet is classified upon entry into the network based on access lists, DSCP
values, or VLAN lists. Using access lists allows you select traffic based on Layer 2, Layer 3,
or Layer 4 information contained in each packet. Based on network policies, different kinds
of traffic can be marked for different kinds of forwarding.
POWER OVER ETHERNET (PoE)
PoE supports IEEE802.3af/at auto-detection for 15W/30W power provision. Different priority
can be assigned to each port in case of exceeding power budget. The PoE status will
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