SAN Multiprotocol Routing: An Introduction and Implementation

542 SAN Multiprotocol Routing: An Introduction and Implementation

port An access point for data entry or exit. A

receptacle on a device to which a cable for another

device is attached. See also duplex receptacle.

port address In an ESCON Director, an address

used to specify port connectivity parameters and to

assign link addresses for attached channels and

control units. In a FICON Director or Fibre Channel

switch, it is the middle 8 bits of the full 24-bit Fibre

Channel port address. This field is also referred to

as the

area field in the 24-bit Fibre Channel port

address. See also link address.

port bypass circuit A circuit used in hubs and disk

enclosures to automatically open or close the loop to

add or remove nodes on the loop.

port card ...