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DFE-570TX
| | DFE-570-TX
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| The D-Link DFE-570TX is a 4-port PCI 10/100Mb Dual Speed Ethernet Server
Adapter. Offering features such as aggregate bandwidth up to 800Mb, dynamic
fail over, and SNMP it is targeted at IS managers with Windows NT servers who
wish to gain more power and control over their network infrastructure and
expand the bandwidth pipe to their servers. Designed to meet the demands of
both local and Internet data serving, the DFE-570TX provides 4 10/100 NWay
ports on a single 32-bit PCI card.
The DFE-570TX gives a new level of control to the IS manager over the
critical data pipe to his server. With four independent MAC addresses it is
capable of providing either an aggregated, load-balanced 800Mb pipe to the
server for maximum speed, or two dynamic fail-over 400Mb pipes to provide
network connection redundancy and ensure maximum server up time. SNMP
management is present to allow the IS manager to effectively monitor mission
critical servers.
Specifically designed for Windows NT on an Intel platform, the DFE-570TX is
optimized for this environment. Custom load balancing and fail-over
configuration software are included to allow an IS manager to quickly and
efficiently set up the advanced features.
Standards such as SNMP and Ethernet ensure compatibility with the most
popular network infrastructures and topologies. IP, IPX, and NetBEUI specific
load balancing provides network support for the most popular protocols for
local windows-based networks and Internet services.
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| How DFE-570TX
Works
| | One common method used to alleviate server
bottlenecks involves segmenting the network across multiple NIC's in the
server. Figure 1 illustrates a typical setup utilizing four NIC's to segment
the network so that if a failure occurs on one segment, it should not affect
the other segments. If one segment fails, access to the server is lost for
all clients on the failed segment. To get the clients on the failed segment
back online the whole server has to be brought downed. Each segment is also
limited to the throughput of a single NIC between the server and the switch
or hub. During peak access times, bottlenecks can still occur.
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| DFE-570TX NIC Design
|
DFE-570TX takes the segmented server concept one
step further to provide for optimal use of all network adapters and guaranteed
up time for all users across the network. Instead of assigning one network
adapter to each segment, adapters are grouped together and treated as one
logical adapter. Network traffic can then be balanced across all of the
adapters so that a bottleneck does not occur at each network segment. Also, if
any one connection or adapter fails, traffic is rebalanced over the remaining
adapters so that all connections to the server are maintained. Figure 2 shows
the same network with a single DFE-570TX represented by 4 adapters connecting
to 4 segments.

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| Multi-Segment
DFE-570TX
|
- DFE-570TX can allow for segmenting the network at the server level.
Figure 3 is an example of an Intranet server for which the network has
been divided into two separate segments. Engineering and Accounting are on
the first segment and Sales and remote users are on the second segment.
Unlike the first example, this design provides for maximum throughput and
fault tolerance for each segment. Each segment consists of an array of two
network adapters with failover and load balancing being provided within
each segment.
| | Features:
|
- Increased Performance with network traffic load balancing.
- Enhanced fault tolerance with failover across multiple port.
- Instant failover without loss of data.
- Allows use of bandwidth intensive applications without need for
expensive Gigabit Ethernet.
- Works with existing switching and hardware infrastructure.
- Eliminates need for additional switching and server investment.
- Provides dynamic failover across multiple ports.
- Detects lost links, bad network adapters or bad cable connections.
- Automatically reactivates downed ports if they come online again.
- Easy to configure.
- Solve the server not enough PCI slot problem.
- Each port can provide 10M or 100M at half or full duplex connection.
- Aggregate the throughput to 800Mbps at full duplex mode.
- 32 bit Bus Master Mode operation and running at PCI 33 Mhz.
- Supports up to 4 individual connections.
- Generates SNMP alerts to any SNMP Management Console based on various
states and conditions of each network port.
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Requirements:
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| Platforms: Network server, or workstation with Intel
Single Pentium or higher processor (dual Pentium or higher recommended for
high traffic loads). Operating Systems: Microsoft Windows NT 4.0 (with Service
Pack 3 and NDIS Hot Fix), or later.
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$199.99
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Now
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