D-Link DGS-1248T Gigabit Ethernet 48 Port L2 Smart Managed Network Switch 4x SFP
Couldn't load pickup availability
Description
Description
D-Link DGS-1248T Switch
Description
High Density With 48 Copper Gigabit Ports
48 1000BASE-T ports provide an inexpensive alternative solution to the fiber-optic. Using your existing low-cost Cat. 5 copper twisted-pair wires as the transmission media, these ports allow you to instantly upgrade your servers to Gigabit capability without requiring you to install new, expensive fiber cables. All ports support 10/100/1000Mbps network speed auto-sensing, full/half duplex auto-negotiation and auto MDI/MDIX plug-and-play.
4 Combo SFP for Flexible Fiber Connection
4 combo SFP are provided for flexible fiber connection. You can select to install optional transceiver modules in these slots for short, medium or long-distance fiber backbone attachment. Use of the SFP will disable their corresponding built-in 10/100/1000BASE-T connections.
VLANs for Enhanced Security & Performance
The switch support VLANs to let you improve security and bandwidth utilization by limiting the broadcast domains and confining intra-group traffic within their segments. To segment up the network, VLAN-supported workstations and servers that are connected to the switch can be grouped into different Virtual LANs (VLANs).
Quality of Service Support
The switch supports Layer 2 802.1p Priority Queue control to prioritize network packets. Classification of users' data priorities can be based on a data packet Priority Queue. This QoS function support allows you to run bandwidth-intensive and delay-sensitive applications and to attach video servers to the switch for video conference.
Port Mirroring
The switch supports port mirroring to assist network traffic monitoring. The network administrator can use this function as a diagnostic tool or debugging feature, especially when fending off an attack. It enables you to keep close track of switch performance and alter it if necessary. Port mirroring can be managed locally or remotely. The administrator places a protocol analyzer on the port receiving the mirrored data to monitor each segment separately. The analyzer captures and evaluates the data without affecting the client on the original port.
General features
Port Standards & Functions
- IEEE 802.3 10BASE-T Ethernet (twisted-pair copper)
- IEEE 802.3u 100BASE-TX Fast Ethernet (twisted-pair copper)
- IEEE 802.3ab 1000BASE-T Gigabit Ethernet (twisted-pair copper)
- IEEE 802.3z Gigabit Ethernet (fiber) ANSI/IEEE 802.3
- NWay auto-negotiation
- IEEE 802.3x Flow Control
- Port mirroring
Number of Ports
48 10/100/1000BASE-T ports, 4 combo SFP slots
* Use of the SFP will disable their corresponding 10/100/1000BASE-connections
Protocol
CSMA/CD
Data Transfer Rates
Ethernet:
- 10Mbps (half duplex)
- 20Mbps (full duplex)
Fast Ethernet:
- 100Mbps (half duplex)
- 200Mbps (full duplex)
Gigabit Ethernet:
- 2000Mbps (full duplex)
Topology
Star
Network Cables
- UTP Cat. 5, Cat. 5e (100 m max.)
- EIA/TIA-568 100-ohm STP (100 m max.)
Full/half Duplex
- Full/half duplex for 10/100Mbps speeds
- Full duplex for Gigabit speed
Media Interface Exchange
Auto MDI/MDIX adjustment for all twisted-pair ports
Software
LED Indicators
- Per device: Power/CPU
- Per 10/100/1000BASE-T port: 10/100Mbps, 1000Mbps
- Per SFP slot: Link/Act
L2 Features
- IGMP snooping: supports 64 multicast groups
- Default flooding for non-joined multicast traffic
- 802.1D Spanning Tree
- Port trunk (Link Aggregation): up to 6 groups per device, up to 8 ports per group
Performance
VLAN
- 802.1Q VLAN standard (VLAN Tagging)
- Up to 256 static VLAN groups
QoS (Quality of Service)
- 802.1p Priority Queues standard
- Up to 4 queues per port
- Supports WRR mode in queue handling
Security
- 802.1x port-based access control
- Broadcast Storm Control: threshold of 8K, 16K, 32K, 64K,
- 128K, 512K, 1024K, 2048K, 4096K bytes per second
- D-Link Safeguard Engine to protect CPU from broadcast / multicast / unicast flooding
Management
- Web-based GUI or SmartConsole Utility
- SNMP support
- DHCP client
- Trap setting for destination IP , system events, fiber port events, twisted-pair port events
- Port access control
- Web-based configuration backup/restoration
- Web-based firmware backup/upload
- Firmware upgrade using SmartConsole Utility
- Reboot
MIB
- RFC 1213 MIB-II
- D-Link Enterprise Private MIB
Switch Capacity
96Gbps
Transmission Method
Store-and-forward
MAC Address Table
8K entries per device
MAC Address Update
Up to 256 static MAC entries
Enable/disable auto-learning of MAC addresses
Packet Filtering/Forwarding Rates (half duplex)
Maximum 1,488,095 pps per port
RAM Buffer
1MByte per device
Jumbo Frame
9,216 bytes
SELLERS NOTES
- Power cable included
- Rack mount ears included
100% Genuine
All PCs and Laptops have a New Copy of Windows 11 installed, activated with a Genuine Licence Key and come with a COA (Certificate of Authenticity) and downloadable restore media.
Fast Shipping
Our orders are held in stock and shipped from United Kingdom. We only use reputable 48 hour couriers and aim to dispatch all our orders within one working day.
Support
We are happy to offer technical support for any issues you have with your purchase. Any issues that cannot be resolved with technical support may be covered under warranty.
About Us
Welcome To Bluecybercow! We offer quality refurbished IT equipment online from leading manufacturers like Dell, HP, Cisco to name a few. We dispatch all orders from the UK and can also provide international delivery. We have a straightforward returns process and a technical support team to resolve any issues that you may have.
Delivery and Returns
We dispatch all orders within 2 working days and use reputable 48 hour courier services for all orders. Tracking details will be provided once your item has been dispatched. If you require 24 hour express delivery please select this option at the time of checkout.
Contact Us
If you have any questions, about an item for sale or about a purchase you have made, please message us and we will respond within one working day where possible. Our office hours are Monday to Friday 9am-5pm. If you contact us outside of these hours, we will get back to you as soon as we can.
Feedback
Your feedback is highly appreciated, we always aim for 100% positive feedback but understand there are sometimes problems that are beyond our control. If you face any issues whatsoever with your purchase, we kindly ask you to contact us first to resolve the issues you may have.
Reviews
Reviews
Terms and conditions
Terms and conditions
Have a question?
Notified by email when this product becomes available
£61.99