DN-8021B / DN-8022B
1. Product Description
The Switch is a cost-effective web smart switch that meets all IEEE 802.3/u/x/z Gigabit, Fast
Ethernet specifications. It is equipped with 12 10/100/1000Base-T ports and 4 dual media
ports that accommodate optional 10/100/1000Base-T or SFP modules. The switch can be
managed through Ethernet port using Web browser, the network administrator can logon the
switch to monitor, configure and control each port’s activity. In addition, the switch implements
the QoS (Quality of Service), Port Mirror, VLAN, LACP, LAN security, Multicasting video stream
protocol, and SNMP v2c. It is suitable for SMB application.
2. Benefits
QoS with Four Priority Queues
The QoS(Quality Of Service) feature provides four internal queues to support four different
classifications of traffic. High priority packet streams experience less delay inside the switch,
which supports lower latency for certain delay-sensitive traffic. The swith classify the packet as
one of the four priorities according to 802.1p priority tag, DiffServ and/or IP TOS. The QoS
operate at full wire speed. The actual scheduling at each egress port can be based upon a
strict priority, weighted round robin or a mix of both.
Port Mirroring
This mechanism helps track network errors or abnormal packet transmission without
interrupting the flow of data. Allow ingress traffic to be monitored by a single port that is
defined as mirror capture port. The mirror capture port can be any 10/100 port, 10/100/1000
port. Mirroring multiple ports is possible but can create congestion at the mirror capture port.
Q-in-Q VLAN for Performance & Security
The VLAN feature in the switch offers the benefits of both security and performance. VLAN is
used to isolate traffic between different users and thus provides better security. Limiting the
broadcast traffic to within the same VLAN broadcast domain also enhances performance.
VLAN support enabling advanced techniques such as “802.1Q-in-Q” to be deployed.
Multicasting VLAN reduce the multicast video streaming traffic in
DVB application
Multicast VLAN is designed for applications (such as Digital Video Broadcasting (DVB)) using
multicast traffic across an IP Ethernet network. The feature allows one single multicast VLAN
to be shared among different subscriber VLANs on the network. This improves bandwidth
utilization by reducing multicast traffic in the subscriber VLANs and simplifies multicast group
management.
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