D-Link DGS-1248T 10/100/1000Mbps Web Smart Switch

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D-Link DGS-1248T Smart 10/100/1000Mbps Web Smart Switch

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48 Ports 10/100/1000Mbps with 4 Combo SFP Expansion Slots
16K MAC Address Table
1024KB Buffer Memory
Smart

D-Link’s latest generation of Web Smart Gigabit Switches blend plug-and-play simplicity with exceptional performance and reliability to create a cost-effective solution for bandwidth-starved work groups and departments. Enhanced features of the DGS-1248T include Gigabit uplink combo ports, QoS, and versatile management functions.

The DGS-1248T is housed in a new style 19” rackmount case with an easy-to-view front panel and diagnostic LEDs. User-friendly, web-based management is supported for easy configuration and flexibility for different network requirements.

Secure Your Network Powered by D-Link Safeguard Engine, the DGS-1248T detects and blocks broadcast, multicast, and unicast flooding when frames enter the switch, which can overload a CPU and bring network traffic to a halt. In addition, the switches provide support for secure encrypted 802.1X Port-based Authentication, Broadcast Storm Control, and up to 256 static MAC address entries.
802.1p Priority Tagging or DSCP-based QoS The DGS-1248T allows users to prioritize traffic based on 802.1p or DSCP-based (Differentiated Services Case Point) QoS. Port-based QoS prioritizes all port traffic with one value, while 802.1p classifies frames according to their VLAN tag. DSCP-based QoS prioritizes traffic according to its IP header. DSCP-based QoS and 802.1p priority tagging prioritizes traffic such as VoIP as it enters the switch, ensuring that your data is always clear and jitter-free.
Gigabit Network Connectivity The D-Link DGS-1248T integrates 1000Mbps Gigabit Ethernet technology that provides a tenfold increase over 100M Fast Ethernet and a hundredfold increase over 10M Ethernet, to raise the speed and performance threshold for a converged network.
Multiple Ports The D-Link DGS-1248T features a built-in 48-port Ethernet switch for direct connections to 48 PCs or additional switches.
Link Aggregation Supporting Static Link Aggregation, the D-Link DGS-1248T can “trunk” multiple ports together to function as a single, high-bandwidth channel, greatly benefiting you when a high-bandwidth channel is needed to uplink to another switch.
Green Ethernet Technology With Green technology, the D-Link DGS-1248T automatically adjusts power usage according to link status, greatly reducing power consumption and operational costs while generates less heat for reliable operation.

Learn more about the D-Link DGS-1248T

Model

Brand: D-Link

Model: DGS-1248T

Spec

Switch Type: Rackmount

Standards: 802.3 Ethernet, 802.3u Fast Ethernet, 802.3x Flow Control & 802.3ab Gigabit Ethernet, 802.1P QoS, 255 802.1Q VLANs, Link Aggregation, 802.1D Spanning Tree, SNMP v1, Port Mirroring (one-to-one/many-to-one), Jumbo Frames up to (9220Bytes), Port Setting on speed, flow control and on/off, central logging, Switch Discovery management utility, web based management, Password control access, 802.1x port based Access control, broadcast storm control, static MAC up to 256 entries), D-Link safeguard engine, DHCP client, IGMP Snooping

Network Management Type: Smart

Jumbo Frames: up to 9KB

Ports: 48 Ports 10/100/1000Mbps with 4 Combo SFP Expansion Slots

Speed: 10/100/1000Mbps

MAC Address Table: 16K

Buffer Memory: 1024KB

Switching Method: Store and Forward

PoE: No

Stackable: No

SNMP: Yes

QoS: Yes

LACP: Yes

Layer: 2

Port Mirroring: Yes

Module Support: Yes

Cabling: 10BASE-T, 100BASE-TX & 1000BASE-T Universal UTP Cable Recognition for Straight-Through or Crossover Cables (MDI/MDI-X)

LEDs: Per Unit: Power
Per Port: Activity/Link & Speed

VLAN Support: 802.1Q (255 Static)

Power: 100-240VAC, 50/60 Hz Internal Universal Power
70Watts

Dimensions: 17.4" x 12.2" x 1.7"

Weight: 10.2 lbs.

Temperature: 0ºC to 40ºC (32ºF to 104ºF)

Humidity: 10% - 90%, Non-condensing

Features

Features: 96Gbps Switching capacity
Web-based Management and Auto Discovery Utility
True Plug & Play
Fiber Media Support Via SFPs

Packaging

Package Contents: DGS-1248T
Resource Disk
Power Cable
2 x Rack mount kit

Manufacturer Warranty

Parts: Lifetime limited

Labor: Lifetime limited

Quick Info

Warranty

Limited Warranty period (parts): Lifetime
Limited Warranty period (labor): Lifetime

Manufacturer Contact Info

Customer Reviews of the D-Link DGS-1248T

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Filter Results Last 2 Weeks (0) Last 6 Months (0) All Reviews (12) 25% (3) 25% (3) 8% (1) 0% (0) 42% (5) Verified Owners Video Reviews Mfr. Responses keyword Go page SubmitTopPaginationForm of 2 previousTopPaginationForm\| nextTopPaginationForm
Hexigen 9/14/2010 7:56:11 AM Tech Level: 5/5 Ownership: 3/5	Rating: 3/5Works but you get what you pay for Pros: Cheap, simple interface, good set of features, so far seems to be stable. Cons: Ridiculous support. This switch doesn't work with Dell E6400 laptop because of the quirky NIC card. The best thing D-Link support could tell me was: "Maybe you need a different switch, that would work for you".... Yea, like Cisco that DOES work with the aforementioned NIC. Did you find this review helpful? Thanks for the valuable feedback you provided!
N/A 2/4/2010 8:34:37 AM Tech Level: 4/5 Ownership: 4/5 Verified Owner	Rating: 5/5No issues - going strong Pros: No problems thus far. The unit has been running w/o problem for a good 8 months. The price is good for a small business switch. Fans are not noisy as others stated. I am running this switch with almost all the ports being used, network traffic is great. Cons: No cons. Other Thoughts: I am looking to purchase a 2nd unit for a backup as switches can fail. 2 out of 2 people found this review helpful. Did you? Thanks for the valuable feedback you provided!
George 7/4/2009 8:02:00 AM Tech Level: 5/5 Ownership: 3/5 Verified Owner	Rating: 1/5 Pros: Would be great if it worked Cons: Unit failed after 3 days of use.......FAN noise EXTREMELY LOUD......Unit was placed in an electronic closet and the fan was far noiser than 10+ other electronic fans together.....EXTREME FAN NOISE MAKES THE UNIT UNUSABLE ANYWHERE EXCEPT IN A REMOTE CLOSET WHERE NOISE IS IRRELEVANT......Unit, however, would have to work-----This unit failed after 3 days of use...... 1 out of 12 people found this review helpful. Did you? Thanks for the valuable feedback you provided!
George 6/18/2009 2:35:53 PM Tech Level: 5/5 Ownership: 2/5 Verified Owner	Rating: 1/5 Pros: Specs read very well.......BUT........ Cons: Unit failed after 3 days in use.......thruput ground to a halt and switch became unusable.....reboot would not solve problem....... Unit has a VERY HIGH and TOTALLY UNACCEPTABLE NOISE LEVEL from its fans....... Other Thoughts: Quality control seems to be non-existant.....Everywhere I read about the high failure rate of these switches......Also, use of cheap high-noise fans is NOT acceptable....... 1 out of 13 people found this review helpful. Did you? Thanks for the valuable feedback you provided!
Dogboy 10/1/2008 6:26:22 AM Tech Level: 5/5 Ownership: 5/5	Rating: 4/5I have 7 of these Pros: Cheap, works well. I've had 7 of these things for nearly 2 years and they work great in a medium sized network of about 300 nodes, 130 of which are connected to an NEC IPS2000 phone switch. Cons: The fans in them are absolute junk. I've replaced the fans in all of them with higher quality aftermarket fans. Every single fan has been replaced at this point. Not the biggest problem considering the price. Other Thoughts: If you have an air conditioned server room, you won't have any worries, but you'll want to replace the fans immediately for any stuck out in an IDF or wiring closet. 5 out of 5 people found this review helpful. Did you? Thanks for the valuable feedback you provided!
nickname 9/30/2008 3:55:24 PM Tech Level: 5/5 Ownership: 4/5 Verified Owner	Rating: 5/5Inexpensive, reliable, small business gig switch Pros: I've had 2 of these running for over a month in a medium-sized business. They have been rock solid. Zero crashes. Zero reboots. They just do their thing. Inexpensive switches. I compared these D-Link switches to some other brands and purchased these because I read about other switches dropping out, dropping ports, requiring reboots, etc. So far they have been rock solid. They are replacements for some other D-Link switches (which ran for 5 years without any problems). These switches are fine for a small business. If your budget includes paying a Cisco engineer to install, configure, and support Cisco equipment, go that route. If you can't afford Cisco and you are a small business, this switch should work fine for you. Cons: I upgraded the firmware on each of these switches. After upgrading the firmware, when trying to access the web interface via Internet Explorer, I got a JavaScript error that prevented the interface from working properly. I fiddled around with it, reloading the page, using the keyboard, typing in the address in the address bar, etc. - and the error disappeared and hasn't returned. This exact problem happened on the other switch also (the same make/model). I've had no problems since but this one is one to watch out for. Other Thoughts: I'd buy from D-Link again. Did you find this review helpful? Thanks for the valuable feedback you provided!
Bob 6/17/2007 6:10:29 AM Tech Level: 5/5 Ownership: 5/5 Verified Owner	Rating: 4/5Another success Pros: Bought these because the budget wouldn't run as far as managed switches. Never really regretted it. Have 4 of them running without a hitch. Cons: Very occasionally need to power cycle them, but usually for an understandable reason (They seem to get confused if there's a building-wide power failure and everything comes up at once when it comes back. Power cycling the switches does the trick). Other Thoughts: I'd buy these again. In fact I'm here now to do exactly that for another project. 1 out of 1 people found this review helpful. Did you? Thanks for the valuable feedback you provided!
AndyO 5/11/2007 8:22:18 AM Tech Level: 5/5 Ownership: 4/5	Rating: 4/5We've had success with this Pros: VLAN, Trunking, Port Monitoring--All of which we use and they work great. Outstanding functionality for the price. Gigabit ports with a fairly decent backplane. Cons: MAC table isn't very dynamic, be sure to powercycle all switches after a network reconfiguration. (Not really a big deal at all...) Other Thoughts: I deployed two of these (as well as one of the 24-port version) on site at my company almost one year ago, and I've had nothing but good things. I just wanted to express my success with this unit since I'm mostly seeing poor review here. Maybe we just lucked out? I will most likely buy another one. 1 out of 1 people found this review helpful. Did you? Thanks for the valuable feedback you provided!
Jero 2/19/2007 7:40:38 AM Tech Level: 5/5 Ownership: 4/5 Verified Owner	Rating: 1/5Steer Clear Pros: LEDs light up in a cool pattern when powered up. Cons: Runs great for about 1-2 weeks, then becomes useless junk. I'm getting ready to RMA switch #3 with D-Link. Hopefully they will swap with a different model #. Other Thoughts: D-Link customer service/tech support is ok, but shipping dead switches back for RMA is getting expensive. 0 out of 2 people found this review helpful. Did you? Thanks for the valuable feedback you provided!
BWB 12/18/2006 2:34:10 PM Tech Level: 5/5 Ownership: 4/5	Rating: 1/5Good as an unmanaged switch, nothing else Pros: It's useful as a paperweight? Cons: Does not handle anything "complex" - forget about VLANs. Configuration does not reliably survive power cycle. Config may become so corrupt that the switch must be RMA'd. Other Thoughts: DLink tech support, while quite nice, had no clue. 0 out of 1 people found this review helpful. Did you? Thanks for the valuable feedback you provided!
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