root99 писал(а):
Q. Why does the Cisco 1921 Integrated Services Router support only a single EHWIC switch module?
A. Unlike the Cisco 1941 and Cisco 2900 and 3900 Series ISRs, the Cisco 1921 platform does not have a backplane switch. The internal Gigabit Ethernet link of the EHWIC switch is connected directly to one of the internal CPU Gigabit Ethernet ports over a serializer/deserializer (SerDes). Thus the Cisco 1921 supports only one EHWIC switch module.
Спасибо - теперь ясно.