Introduction

The D-Link Web Smart DGS-1224T, member of the DGS-1200 series blends plug-&-play simplicity with exceptional performance and reliability to create a cost-effective solution for bandwidth-starved workgroups and departments. With three models to choose from, D-Link provides a solution for any size business with any size need. Each switch supports Combo fiber SFP uplinks for uplinking to servers, storage, or other switching devices providing superior performance with exceptional value. The Web Smart DGS-1200 series delivers a high performance features set sufficient to monitor and secure a SMB network efficiently. These advanced features include:

* 802.1P QoS
* 802.1Q VLANs
* Link Aggregation
* Port Mirroring
* 802.1D Spanning Tree
* Jumbo Frames
* SNMP v1

Advanced Management Features
SNMP Management
The Web Smart DGS-1200 Series supports SNMP v1. SNMP is a useful tool in managing and controlling SNMP supported network devices. SNMP enables the Web Smart 1200 series to be polled to provide valuable information about the status of the unit and send traps on abnormal events. This sharing of vital management information saves time and money.

IEEE 802.1D Spanning Tree
Spanning Tree provides protection from unintentional cabling loops forming within a network infrastructure. Loops are dangerous in that they create an unending circle where broadcast and multicast traffic propagate across the network in an endless loop. This creates a storm of traffic that overwhelms the network and brings traffic to a crawl. 802.1D Spanning tree detects and breaks these loops ensuring network uptime.

IEEE 802.1Q VLAN Tagging
A VLAN or (Virtual LAN) is a collection of computers that are grouped together. VLANs allow the network to be segmented into groups (Departmental Groups / Hierarchical groups / Security Groups). 802.1Q is a standard that places a “tag” in a frame identifying which VLAN it belongs to. The advantage of this is that all 802.1Q compliant devices can work seamlessly together to manage VLAN traffic.

802.1p Priority Tagging
Like 802.1Q VLAN tagging, 802.1p places a tag in a frame to indicate the priority of the frame. A tag will represent a priority of 0-7 and an 802.1Q compliant switch can read this tag and prioritize traffic accordingly. This differs from port based QoS in that in Port Based QoS all traffic entering a specific port is prioritized the same way with the same value. In 802.1Q a port can receive frames with varying priority tags and classify them based on these tags. For example a VoIP phone that supports 802.1p can assign a priority to its VoIP traffic. When it enters the switch, the switch can then prioritize it so that voice traffic is always clear and jitter free.

Link Aggregation
The DGS-1200 Series supports static link aggregation. Link aggregation provides a means of “trunking” multiple ports together to function as a single large bandwidth channel. When a high bandwidth channel is needed to uplink to another switch, link aggregation makes this process simple and hassle-free.

Jumbo Frame Support
Jumbo Frame support is designed to improve network throughput and significantly reduce the CPU utilization of large file transfers (such as multimedia files or large data files) by enabling more efficient larger payloads per packet. The Smart 1200 series supports Jumbo Frames up to (9KB) in size.

Web Management Utility
The DGS-1200 Web Smart series includes the D-Link Web Management Utility. This utility provides a valuable tool in managing, planning, and troubleshooting network configurations. Managing a DGS-1200 series Web Smart switch takes only minutes. With full color graphic pictures, diagrams, and easy to understand navigation menus, using the Web Smart DGS-1200 Management Utility is as easy as surfing the net. Some of the features include:
Discovery List – In every network, documentation is vital. And with the Auto-Discovery utility the guesswork is now over. Every Smart DGS-1200 series switch comes with auto-discovery software that automatically detects and displays up to 254 D-Link Web Smart switches running on your network along with a list of their MAC addresses.
Monitor List - All the DGS-1200 Web Smart switches can be monitored for status and trap messages sent to a designated station. Device Monitoring assists the network administrator in knowing what and when a device on the network goes down.
Trap View – When an abnormal event occurs on the switch, traps can be set to notify the system administrator. Traps can be set up for system events, device bootup, abnormal Tx / Rx errors and illegal login. The trap function can receive the event that occurs in the Monitor List and display the trap information including the Symbol, Time, Device IP, and Event that occurred.
Device Setting – The Device Setting feature of the Web Management Utility allows the network administrator to set the IP Address, Subnet Mask, Gateway, Send Trap To Address, System name, password, and Location of the DGS-1200 series switch.

Automatic Detection
The D-Link Web Smart 1200 series is truly plug-and-play. All RJ-45 ports support auto MDI/MDIX, so there is no longer a need to use crossover cables or an uplink port. The auto-MDI/MDIX feature will automatically detect whether the switch is connected to another switch or an end-station device and configure the port accordingly. If the D-Link Smart 1200 series detects a switch connected to one of its ports, it will automatically configure that port to act as an uplink. If the switch detects a computer or end station device, the port auto-configures to a standard port. The confusion over crossover cabling is a thing of the past.

Investment Protection-
The Web Smart 1200 series helps to protect customers’ existing and future network infrastructure investments:

* Standards-based features help insure multi-vendor compatibility
* Fiber Gigabit Media Support through 2 Combo SFP Expansion Slots (4 Combo slots with DGS-1248T)
* 5-Year warranty
* Free Technical Support

The D-Link Web Smart 1200 is a flexible, high performance, and value-oriented solution for a wide range of Gigabit applications.