Forwarding Database - This table is used by a Layer 2 device (switch/bridge) to store MAC addresses and ports so that data packets can be forwarded to the correct destination.

Fabric Executive - This is an Omni-Path component that provides out-of-band access to the Fabric Manager.

Forward Explicit Congestion Notification - This is an alert sent to the receiver that congestion is occurring. The receiver can notify the sender to take action to avoid congestion.

Fabric Manager - This is an OPX Software component responsible for managing the fabric using management packets over a dedicated virtual lane (VL15).

Field Replaceable Unit - This is a part or assembly that can be quickly and easily replaced by the user or technician without having to send the product or system to a repair facility.

Global Identifier - This is a 128-bit fabric address (a 64-bit subnet prefix plus a 64-bit interface identifier) that identifies a port or a multicast group, written as subnet:interface.

Globally Unique Identifier - This is a fixed 64-bit value that permanently identifies a hardware device in the fabric (such as a SuperNIC port, switch, or IOC); unlike a GID, it is a hardware identity, not a routable address.

Host Channel Adapter - This network fabric interconnect provides a computer with port connections to other devices.

Internet Assigned Numbers Authority - This standards organization oversees global IP address allocation, autonomous system number allocation, root zone management in the DNS, and other Internet Protocol-related symbols and Internet numbers.

I/O Controller - This is a fabric-attached controller, residing within an I/O Unit (IOU), that provides I/O services such as storage (for example, SRP). Each IOC has a unique GUID.

Internet Protocol over InfiniBand- This network interface implementation is IP datagrams over the InfiniBand.

Inter-Switch Link - This is a link connecting two switches in the fabric, which may be internal to a large switch or an external cable between separate switches.

Linear Forwarding Table - These tables define how a frame or packet will be forwarded out of a given switch or router in the network.

Local Identifier - This is a 24-bit address local to a subnet that is assigned to end nodes by the subnet manager, providing additional features related to routing algorithms.

LID Mask Control - This method provides the assignment multiple local identifiers (LIDs) to a single physical port.

Link Quality Indicator - This indicator provides a value measuring the quality of received data packets. It can identify secure transmissions and links with poor signal integrity.

Link Transfer Packets