D-Link DES-1252 Overview:
Product Features
High Performance Switching:
- CPU DoS Protection
- 8K MAC Address Table
- IGMP Snooping Tree
- 802.1D Spanning Tree
- Link aggregation (6 groups / 8 ports)
- 256 802.1Q VLANs
- 802.1P QoS (4 Queues)
- 802.1x Port-based Authentication
- Broadcast Storm Control
- Static MAC Address
- DHCP Client
Network Management:
- GUI Management
- SNMP v1
- Port Mirroring (one-to-one &
many-to-one)
- "Smart Console" Management Utility
Product Description:
The DES-1252 Web Smart Switch from
D-Link is a cost-effective solution for
the small and medium business that
requires basic management features like
VLAN segmentation, QoS prioritization,
and secure 802.1x login and
authentication, showcased in a low cost,
easy to configure, and GUI managed
'smart' business solution. The DES-1252
comes with 48 10/100BASE-TX Fast
Ethernet ports, 2 combo 1000BASE-T/SFP
ports for flexible copper/fiber Gigabit
connection and 2 additional 1000Base-T
copper interfaces for uplinking to
storage area network devices, servers,
or core switching solutions. The
Graphical User Interface allows you to
implement Quality of Service (QoS),
VLANs and security without having to go
through complex command line management
usually found in other managed switches.
D-Link Safeguard Engine
The DES-1252 incorporates advanced mechanisms to
detect an attack against the central processing unit
of the switch and to take corrective action on the
attacking interface. When a Denial of Service attack
is waged against the DES-1252, the D-Link Safeguard
Engine detects the threat and prevents overload of
the central processor thus insuring network
integrity and helping to maintain open network
bandwidth channels.
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.
Port Trunking
The DES-1252 supports static port trunking of up to
6 groups of 8 ports per device. Ports can be
combined together to create multi-link loadsharing
aggregated trunks to a server or a network backbone.
To expand the network, you can also make use of link
aggregation to eliminate bottlenecks between the
cascaded switches.
802.1Q VLANs
The DES-1252 provides support for 802.1Q VLANs for
improved security and bandwidth utilization. VLANs
work by segmenting broadcast domains thus reducing
network congestion due to constant network
broadcasting. In addition VLANs provide a means of
securing each broadcast domain from all others. This
in turn prevents users on one VLAN from gaining
access to resources on other network segments. VLANs
can be configured to segment departmental resources.
For example, VLANs can be implemented on an SMB
network to prevent the Marketing department from
gaining access to secure resources in the Accounting
department.
SNMP Management
The DES-1252 supports SNMP v1. SNMP is a useful tool
in managing and controlling SNMP supported network
devices. SNMP enables the DES-1252 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.
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 802.1p a port can receive frames with
varying priority tags and classify them based on
these tags. A VoIP phone that supports 802.1p can
assign a priority to its VoIP traffic and when it
enters the switch the switch can give it a higher
priority so that voice traffic is always clear and
jitter free.
IGMP Snooping
IGMP Snooping allows for the forwarding of multicast packets such as streaming audio, video, without increasing network broadcast congestion. By snooping IGMP registration
information within a frame, a list of workstations who have joined the multicast group is created. This list then allows the switch to intelligently forward packets to only
the appropriate member workstations.
802.1x Authentication
802.1x Authentication provides a secure means to allow users to log onto your network. When used in conjunction with a RADIUS server, 802.1x requires each user workstation
attached to the DES-1252 to provide a username and password before gaining access to the local area network.
Operational Simplicity
The DES-1252 supports a wide array of plug-and-play features:
- 10/100Mbps auto-negotiation
- Universal UTP cable recognition for auto straight-through or crossover cable detection (Auto MDI/MDI-X)
- Full/Half duplex support
- IEEE standards support
Managing the DES-1252 has never been easier.
Using its built in browser-based management
interface, configuring the switch takes only
minutes. With full color graphic pictures, diagrams
and easy to understand navigation menus, configuring
the DES-1252 with the features you require is as
easy as surfing the net. The DES-1252 supports many
of today's most sought after features like 802.1p
priority queuing, 802.1Q VLANs, port trunking,
802.1x authentication, port mirroring, SNMP,
spanning tree, link aggregation, IGMP Snooping,
broadcast storm control, and more.
D-Link
DES-1252
