The FEIP2 is a dual-port, fixed configuration interface processor that provides two, 100-Mbps, IEEE 802.3u Fast Ethernet (FE) interface interfaces Each 100BaseTX interface on the FEIP2-2TX has an RJ-45 connector to attach to Category 5 unshielded twisted-pair (UTP) for 100BaseTX, and an MII connector that permits connection through external transceivers to multimode fiber for 100BaseFX, or to Category 3, 4, and 5 UTP or shielded twisted-pair (STP) for 100BaseT4 physical media. Each FE interface on an FEIP2 can be configured at 100 Mbps, half duplex, for a maximum aggregate bandwidth of 200 Mbps per pair. Each FE interface on an FEIP2 can also be configured at 200 Mbps, full duplex, for a maximum aggregate bandwidth of 400 Mbps per pair. Further, one FE interface can be configured at 100 Mbps, half duplex, while the other FE interface can be configured at 200 Mbps, full duplex, for a maximum aggregate bandwidth of 300 Mbps per pair.This interface processor can operate in Cisco 7000 series routers using the 7000 Series Route Switch Processor (RSP7000) and 7000 Series Chassis Interface (RSP7000CI).