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The FEIP (see the following figure) provides two Fast Ethernet (100 Mbps) ports, which support twisted-pair or fiber-optic cable. The 100BaseT interfaces are mounted on port adapters that attach to the FEIP motherboard. Each port adapter has two 100BaseT interfaces: one RJ-45 and one MII connection. Only one connection can be used per port adapter.
Each 100BaseT port on the FEIP has an RJ-45 connector to attach to Category 5 UTP for 100BaseTX, and an MII connector that permits, through user-provided transceivers, connection to other physical layers. Only one connector on a Fast Ethernet port adapter can be used at one time. Both full-duplex and half-duplex operations are supported.
The FEIP can operate with a variety of 100BaseFX or 100BaseTX devices, for example, a Catalyst 5000 switch with Fast Ethernet interface modules installed. To support 100BaseTX connections, the host Cisco 7000 series router must be running Cisco IOS Release 10.3(5) or later, and the host Cisco 7500 series routers must be running Cisco IOS Release 10.3(6) or later. To support 100BaseFX connections, the host Cisco 7000 series and Cisco 7500 series router must be running Cisco IOS Release 10.3(13), or later, Release 11.0(10) or later, or Release 11.1(5) or later.
Figure 27-19: Fast Ethernet Interface Processor
