Installation guide

Chapter 1: Introducing the AT-2973SX, AT-2973T, AT-2973T/4, and AT-VNC10S Adapters
18
Functional Descriptions
The AT-2973SX, AT-2973T, AT-2973T/4, and AT-VNC10S Broadcom
NetXtreme II adapters are a new class of Gigabit Ethernet (GbE) and 10
Gigabit Ethernet (10GbE) converged network interface controllers

(C-NIC). They can perform accelerated Ethernet data networking and
storage networking simultaneously for all popular protocols used in the
data center, and include features such as:
 TCP Offload Engine (TOE) for accelerating TCP
 Internet Small Computer Systems Interface (iSCSI) offload for
accelerating network storage access
Enterprise networks that use multiple protocols and multiple network
fabrics benefit from the C-NICs ability to combine data communications,
storage, and clustering over a single Ethernet fabric and to boost server
CPU processing performance and memory utilization while alleviating I/O
bottlenecks.
The basic characteristics of the adapters are listed in Table 1.
Table 1. Network Adapter Cards
Adapter
Number of Ports
or Slots
Speed
Maximum
Distance
Bus
Connector
AT-2973SX Two fiber optic
ports with duplex
LC connectors
1000 Mbps
(1000Base-SX)
220 (722 feet) or
550 meters (1,804
feet)
1
PCIe x4
AT-2973T Two twisted pair
ports with RJ-45
connectors
10, 100, or 1000 Mbps
(10/100/1000Base-T)
100 meters (328
feet)
PCIe x4
AT-2973T/4 Four twisted pair
ports with RJ-45
connectors
10, 100, or 1000 Mbps
(10/100/1000Base-T)
100 meters (328
feet)
PCIe x4
AT-VNC10S Two slots for SFP+
transceivers
10 Gbps
-
2
PCIe x8
1. The maximum operating distances of the fiber optic ports on the AT-2973SX adapter depend on the fiber optic
cable.
2. The maximum operating distances of the SFP+ slots on the AT-VNC10S adapter depend on the transceivers.
Contact your Allied Telesis sales representative for a list of supported transceivers for the AT-VNC10S
adapter.