The 32-bit counters in many currently deployed tools simply can't count high enough. However, it may be possible to get more life out of existing tools equipped with 32-bit counters, as long as they support sampling. However, sampling is not appropriate for short-term measurements such as those a protocol analyzer might take. Cabling Cabling is a major issue in migrating to any new PHY technology. Network architects will need to determine whether existing cable plants are capable of carrying 10G Ethernet traffic and assess distance limits imposed by the new specification.
Copper is out.
Unlike Gigabit Ethernet, which includes a 1000Base-T specification for copper cabling, 10G Ethernet will run only over fiber. This isn't expected to be a showstopper because fiber already represents the majority of Gigabit Ethernet interfaces sold. On the LAN, multimode is the most likely choice. Interfaces with 850-nanometer lasers are intended for use in very short reach applications, such as links between switches or supercomputers. For distances above 300 meters, single-mode fiber will be a must.