Abstract

Research report co-sponsored by 3Com, IBM, Madge Networks, and Proteon examining additional criteria for choosing network interface cards. These include: Compatibility, Ease-of-use, Technical Support, & Management. Covers products for Ethernet, Token Ring, and FDDI network interface cards built for ISA, EISA, MC (MCA), and PCMCIA bus architectures. 

This Tolly Group executive summary presents the findings of its 1994 Industry Benchmark study, Network Interface Cards – Beyond Performance, an extensive six-month evaluation of 22 network interface cards across Ethernet, token ring, and Fiber Distributed Data Interface (FDDI) environments. The study was designed to examine factors that extend beyond raw throughput and price, reflecting the growing reality that NICs were becoming increasingly commoditized on traditional performance metrics. Tested products spanned ISA, EISA, MCA, and PCMCIA form factors from vendors including 3Com, IBM, Madge Networks, and Proteon. 

The report argues that while price and performance remain the dominant criteria in straightforward, mainstream deployments, they are not sufficient for evaluating NICs used in more demanding environments. Tolly found that compatibility was often the most difficult and most important issue. Because a NIC must work correctly with a PC’s hardware, operating system, protocol stack, communications software, and drivers, problems can emerge at multiple levels. The study highlights how differences among PC designs, the growth of software combinations, and the use of less-common stacks such as OS/2 NDIS can introduce significant deployment risk. As a result, the report emphasizes the importance of detailed vendor hardware-compatibility and software-support lists, including operating system, driver, and application combinations that have actually been tested. 

Ease of use was another major focus. The study notes that configuration and installation can vary widely among NICs. Adapters that support software-based configuration, on-board flash-stored utilities, or emerging Plug and Play capabilities can simplify installation and significantly reduce troubleshooting time compared with older designs that require physical DIP switch changes. Tolly also points to value-added operational features such as LED port-activity indicators and upgradeable ROMs, both of which can improve maintainability in production environments. 

Technical support was identified as a critical component of overall product value. The report recommends that users obtain the latest drivers from vendor bulletin board systems at the time of purchase and stresses that strong support should include 24x7 BBS access, 14.4Kbit/s or faster modem support, responsive technical staff during business hours, after-hours contract options, and toll-free phone access. These support capabilities were seen as increasingly important because even well-tested adapters can encounter compatibility issues in complex customer deployments. 

The report also reviews management trends, noting that proprietary and SNMP-based NIC management approaches had not yet gained broad customer acceptance, while a more standardized direction was emerging through the Desktop Management Task Force (DMTF). Tolly expected major vendors to move toward vendor-independent NIC management implementations in 1995. 

Finally, an informal market survey conducted as part of the project found that most respondents managed environments with more than 500 NICs. Their responses showed that while cost remained the top purchasing factor, technical support and software-configurable NICs were also considered very important. Overall, the executive summary concludes that organizations evaluating NICs should look beyond simple benchmark numbers and consider compatibility, manageability, installation design, and support infrastructure as essential criteria for large-scale network deployments.