Chapter 1 BayStack 420 Switch 27

The Console port is a DB-9, RS-232-D male serial port connector. You can use this connector to connect a management station or console/terminal to the BayStack 420 Switch by using a straight-through DB-9 to DB-9 standard serial port cable. You must use a VT100/ANSI-compatible terminal (for cursor control and to enable cursor and functions keys) to use the console port. See Installing the BayStack 420 10/100/1000 Switch for more information.

Note: The console port is configured as a data communications equipment (DCE) connector. Ensure that your RS-232 cable pinouts are configured for DCE connections (see Appendix D, “Connectors and pin assignments,” on page 195).

The Console port default settings are: 9600 baud with eight data bits, one stop bit, and no parity as the communications format, with flow control set to enabled.

Gigabit Interface Converter (GBIC)

Gigabit Interface Converters (GBICs) are hot-swappable input/output enhancement components designed for use with Nortel Networks products to allow Gigabit Ethernet ports to link with fiber optic networks.

Port connectors

The BayStack 420 Switch uses 10BASE-T/100BASE-TX RJ-45 (8-pin modular) port connectors.

The 10BASE-T/100BASE-TX port connectors are configured as MDI-X(media-dependentinterface-crossover). These ports connect over straight cables to the network interface card (NIC) in a node or server, similar to a conventional Ethernet repeater hub. If you are connecting to an Ethernet hub or Ethernet switch, use a crossover cable unless an MDI connection exists on the associated port of the attached device (see “Appendix D, “Connectors and pin assignments,” on page 195).

The BayStack 420 Switch uses autosensing ports designed to operate at 10 Mb/s (megabits per second) or at 100 Mb/s, depending on the connecting device. These ports support the IEEE 802.3u autonegotiation standard, which means that when a port is connected to another device that also supports the IEEE 802.3u standard, the two devices negotiate the best speed and duplex mode.

Using the BayStack 420 10/100/1000 Switch

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Nortel Networks 1000BASE-ZX, 1000BASE-SX, 1000ASE-XD, 1000BASE-LX manual Gigabit Interface Converter Gbic, Port connectors