D-Link 3312SR - Switch Manuel d'utilisateur télécharger pdf (Page 2)

SWITCHES

Scalable Expansion With 288 10/100BASE-TX & 12 access attempt. Port security features allow you to limit

Gigabit Ports: the number of MAC addresses per port in order to control

the number of stations for each port. Static MAC

By stacking a DGS-3312SR with 12 DES-3226S switches,

addresses can be defined for each port to ensure only

you can have as many as 288 10/100BASE-TX ports for

registered machines are allowed to access. By enabling

departmental user connection, plus 12 Gigabit ports for

both of these features, you can establish an access

server and backbone attachment. This architecture allows

mechanism based on user and machine identities, as

you to easily add switch units as your need grows, without

well as control the number of access stations.

making changes to your existing network hardware.

Multi-Layer Access Control List (ACL):

12-Port Collapsed Backbone:

Access Control Lists (ACL) allow the network

If you opt to use your DGS-3312SR as a stand-alone Gigabit

administrator to define policies on network traffic control.

switch, you can install up to 2 Gigabit modules in the

The switch supports comprehensive and multi-layer

expansion slots. This will give you 8 Gigabit ports, in addition

ACLs, providing a powerful tool for network

to the 4 built-in 1000BASE-T/combo SFP ports, making it a

management. For example, the switch can be set to

total of 12 Gigabit ports. This type of deployment gives you a

block malicious bulk traffic from specific clients based

small collapsed backbone to which 12 switches and servers

either on MAC or IP addresses. Or during a virus attack,

can be attached. All ports on the DGS-3312SR support

the switch can be set to restrict its flooding based on a

jumbo frames to alleviate heavy network traffic. Copper and

virus's unique pattern based on TCP/UDP port number.

fiber cables can be deployed, depending on your selection of

the port modules. Advanced CoS Support:

Redundant Power Support: The switch supports not only Layer 2 802.1p Priority

Queue control, but also a variety of ways to prioritize

The DGS-3312SR can be connected to an external power

network packets. Multi-layer information from L2 to L4

supply for redundant power backup purposes. In case the

can be used to classify packet priorities.

built-in internal power supply fails, the optional redundant

power supply unit will automatically provide all the required This function allows you to attach IP telephony devices

power to ensure continuous operation. or video servers to the switch to run delay-sensitive

applications like video conference. The DGS-3312SR

Wire-speed IP Routing:

supports up to 8 CoS (Class of Service) queues in the

The switch provides basic IP routing, with instant support for

stand-alone mode, and up to 4 CoS queues in the

Windows, Unix and Internet environments. It provides wire-

Stacking Master mode.

speed non-blocking switch fabrics with hardware-based

Flexible Transmission Scheduling:

packet filtering/forwarding. Packet routing is performed by

on-board ASICs at speeds many times faster than CPU- The switch supports 2 methods of packet transmission

based routers. scheduling: Strict Priority Queuing and Weighted

Round-Robin (WRR). You can select to use Strict Priority

Seamless Integration:

Queuing to strictly enforce your priority queues, or WRR

The DGS-3312SR can be instantly integrated into any

to address bandwidth limitations at peak time. WRR

existing network for seamless integration of Layer 2 and

allows each queue to be assigned a different percentage

Layer 3 packet switching. With multi-layer support for every

of the output port's bandwidth, so that lower-priority

port, you can start with Layer 2 switching, then upgrade to

queues are not denied access to buffer space and port

Layer 3 routing anytime by simply re-configuring the ports.

bandwidth.

You can flexibly segment the network into domains and sub-

IGMP Snooping for Broadcast Control:

domains, using (1 ) subnet IDs and user IP numbers to route

traffic, and (2) custom filters based on users' physical MAC The switch listens to IGMP (Internet Group Management

addresses to filter extraneous traffic. At Layer 2, the switch Protocol) messages to build mapping table and

uses autolearned and user-defined MAC addresses to associate forwarding filters. It dynamically configures the

discard and forward packets. At Layer 3, it looks at the user- switch ports to forward IP multicast traffic only to those

specified routing table to route packets to their destinations. ports associated with multicast hosts.

VLANs for Enhanced Security & Performance: Broadcast Storm Control:

The DGS-3312SR supports 802.1Q and port-based VLANs To prevent too many broadcast/multicast from flooding

to improve security and bandwidth utilization. This limits the the network, broadcast/multicast storm control is

broadcast domains and confines intra-group traffic within configured to screen excessive traffic. Threshold values

their segments. The switch also supports GVRP (GARP are available to control the rate limit for each port.

VLAN Registration Protocol) for automatic VLAN Packets are discarded if the respective count exceeds

configuration distribution. the configured upper threshold in a given time interval.

The possible range of upper threshold is from 0 to 255k

Advanced Network Access Management:

packets per second.

802.1x features enable user authentication for each network

FEATURES AND BENEFITS

DGS-3312SR

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D-Link 3312SR - Switch Manuel d'utilisateur Page 2

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