User Manual

How does a Tagged VLAN work?

If the ingress filtering is enabled and when a packet is received, VLAN bridge will first check if the VID of the packet presents.

1). If the packet has a non-zero VID, VLAN bridge will apply this VID as the VLAN ID of the packet in the network.

2). For a packet with null tag or no VLAN tag, if VLAN bridge provides rules to decide its VID, then apply this VID to the packet.

If VLAN bridge does not support any rule for VID, then apply the PVID of the port to the packet which came from that port. VLAN bridge checks to see if the ingress port and the received packet are on the same VLAN. If not, drops it. If yes, forwards it to the associated ports. Meanwhile, this VLAN must be applied to the egress port, or the packet will be dropped.

If ingress filtering is disabled, VLAN bridge will only check the MAC address table to see if the destination VLAN exists. If VLAN does not exist, then drop the packet, and if both DA and VLAN do not exist, forwards the packet. If just knows VLAN existed, then floods the packet to all the ports the VLAN covers.

If we plan to deploy four VLANs in an office and use a switch to partition them, we should check which ports belong to which VLAN first. Assuming a 24-port switch is applied.

Name

 

VID

 

Port Members

 

 

 

 

Marketing

 

2

 

1,2,3,4,5

Service

 

3

 

6,7,20,21,22

Sales

 

4

 

8,9,10,11,12,13,14,15,16

Administration

 

1

 

17,18,19,23,24

Table 3-6

Next, assigns IP address to each VLAN. Usually, we use 10.x.x.x as internal IP block. Because there are total four VLANs in the network, we must assign 4 IP blocks to each of them.

Name

 

VID

 

Network Address

 

 

 

 

Marketing

 

2

 

10.1.2.0/24

Service

 

3

 

10.1.3.0/24

Sales

 

4

 

10.1.4.0/24

Administration

 

1

 

10.1.1.0/24

Table 3-7

Here we apply the subnet mask 255.255.255, and each VLAN is capable of supporting 254 nodes.

Publication date: January, 2005

Revision A1

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Edimax Technology ES-516G+ user manual Vid
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ES-516G+ specifications

Edimax Technology has carved a niche for itself in the realm of networking devices, and one of its standout products is the Edimax ES-516G+. This 16-port Ethernet switch is designed to meet the demanding needs of small to medium-sized businesses and network enthusiasts.

At the core of the ES-516G+ is its capacity to support 10/100/1000 Mbps speeds across its 16 ports, enabling efficient data transmission and minimal latency for connected devices. This switch is a Layer 2 unmanaged switch, which simplifies the user experience by eliminating the need for complex configurations. Users can plug in their devices and start functioning immediately, making it an ideal option for those who may not have extensive networking knowledge.

One of the key features of the Edimax ES-516G+ is its support for Auto-MDI/MDI-X, which automatically detects the type of connection required for each port, whether it’s connecting to another switch or end devices like computers and printers. This eliminates the hassle of crossover cables and ensures seamless connectivity.

Moreover, the ES-516G+ incorporates advanced energy-saving technologies that are designed to minimize power consumption without compromising performance. This feature is particularly appealing for environmentally-conscious businesses looking to reduce their carbon footprint. It includes capabilities such as energy-efficient Ethernet (EEE), which adjusts power usage based on the link status and length of connected cables.

The switch features a compact metal housing, providing durability and a professional look suitable for any office environment. It also supports a fanless design for quiet operation, making it an excellent addition to workplaces where noise levels need to be kept to a minimum.

In terms of performance, the Edimax ES-516G+ employs store-and-forward switching technology, which helps to minimize errors by ensuring that only error-free packets are forwarded. This significantly enhances network performance and reliability.

Overall, the Edimax Technology ES-516G+ stands out as a robust, efficient, and user-friendly solution for enhancing network performance in small to medium-sized businesses. Its combination of speed, plug-and-play convenience, energy-saving features, and reliability makes it a compelling choice for users seeking to expand their network capabilities. Whether for a bustling office or a home network, the ES-516G+ is engineered to deliver a seamless, high-performance networking experience.
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