Intel 220T Connecting to Devices, Connection Guidelines, General, Cabling, Daisy-chaining Hubs

Connecting to Devices

Connection Guidelines

General

•Ports on the 220T and 210T hubs are half-duplex. To connect to a device at full-duplex, you must use the optional Ethernet or Fiber Modules.

•220T ports are autonegotiating and can operate at 10Mbps or 100Mbps. The hub matches the highest possible speed of an attached device.

•All ports on the 210T hub operate at the same speed, either 10Mbps or 100Mbps. The ports cannot autonegotiate speed.

•If the 10Mbps and 100Mbps segments are bridged externally (through a switch or Ethernet Module), be sure to turn off the hub’s internal bridge before connecting any devices.

Cabling

•Use Category 5 unshielded twisted-pair (CAT 5 UTP) cable when connecting 100Mbps devices to the hub.

•Use Category 3, 4, or 5 unshielded twisted-pair (CAT 3, 4, 5 UTP) cable when connecting 10Mbps devices to the hub.

•Limit the cable length between devices to 100 meters.

•Use a crossover cable to connect the hub to a switch.

•Use a straight-through cable to connect the hub to a server or workstation. For more information on cabling, see pages 12-13.

Daisy-chaining Hubs

•Don’t daisy-chain two hubs operating at 100Mbps with UTP cabling (this violates the IEEE 802.3u Fast Ethernet specification for Class I hubs). You must use Intel Cascade Cables (EE200CC).

•Hubs can be daisy-chained only if they are operating at 10Mbps.

•When connecting 10Mbps hubs, please note the following diagram.

100m (max)

10 10

10

10

500m (max)

8