1
I
NTRODUCTION
The 3Com
®
TokenLink
®
Velocity
™
ISA network interface
card (NIC) is a high-performance card for PCs with an
Industry Standard Architecture (ISA) bus or Extended
Industry Standard Architecture (EISA) bus. This NIC is
referred to as the 3C319 NIC in this guide.
High-Performance Features
The 3C319 NIC is designed for high network
performance and trouble-free operation. This section
describes the performance features of the 3C319 NIC.
DynamicAccess Class of Service
3Com’s DynamicAccess
™
features optimize network
performance. With the DynamicAccess Class of Service
feature, you can select the applications—such as
multimedia sessions-—that require the highest-priority
access to your network. Based on your selection, the
network device driver recognizes high-priority applications
and prioritizes their data transmissions.
The NIC implements dual queues to ensure that
high-priority traffic gets transmitted before normal-priority
traffic. When high-priority traffic is available for
transmission, a high-priority token is requested.
Parallel Tasking Architecture
Parallel Tasking
®
architecture provides the industry’s
fastest performance by pipelining data between the PC
and the network. Parallel Tasking technology improves
network data throughput by overlapping processing
tasks to speed data transmission and reception.
