Tech moves fast! Stay ahead of the curve with Techopedia!
Join nearly 200,000 subscribers who receive actionable tech insights from Techopedia.
An Expansion port (E_port) is an inter-switch port used in fiber channel topology to connect two fiber switches. An E_port is connected to another E_port to create an inter-switch link (ISL). The E_port carries frames between switches, which are used for fabric management and configuration. It functions as a channel between switches for frames that are intended for Node ports (N_port), Node Loop ports (NL_port) or Nx_ports.
A fiber channel is a high-speed network that connects a number of computer systems and provides a dependable and remote OS interface that requires high bandwidth. The E_port is the point where frames pass between fabric switches. A frame with a destination exits a local switch through an E_port, unless the frame is intended for the switch, N_Port or NL_Port. After a frame passes through the E_port, it is forwarded to a local or final destination.
Each E_port has a unique name within the fabric. An interactive system language (ISL) is used to transmit and receive frames within the fabric, N_port and NL_port. The E_port supports Class 2, Class 3 and Class F services.
Do you work in the tech industry? Help us learn more about why the gender gap still exists in tech by taking this quick survey! Survey respondents will also be entered to win a $100 Amazon Gift Card!