Brocade Flow Vision Administrators Guide (Supporting Fabric OS v7.3.0) - Manual (Page 13)

Brocade Flow Vision terminology
The following terms are used in this document.
Term Description
Defined flow User-created flow; it can be active or inactive.
Local flow Flow defined on the switch on which the flow command is being run.
Root flow Instance of a static flow used to create learned flows.
Static flow Flow created when learning is not used.
Sub-flow System auto-created flow based on a root flow. There can be more than one sub-flow.
Remote flow Flow defined on a different switch from the one on which you are viewing it.
Learned flow Flow created by using an asterisk (*) as part of the flow definition.
Local switch Switch on which the flow command is being run.
Remote switch Switch other than the switch on which the flow command is being run.
ISL An Inter-Switch Link (ISL) is a protocol that maintains VLAN information in Ethernet frames as
traffic flows between switches and routers, or switches and switches.
DISL A Dedicated ISL (DISL) is a physically-connected link between two logical switches that belong
to the same Fabric ID (FID). A DISL is dedicated to carry frames only related to the FIDs of
connected logical switches.
LISL A LISL (Logical ISL) is a logical link between two logical switches that is used for control
frames. Depending on the fabric topology, a LISL may or may not map directly to a single
physical ISL.
XISL An XISL (eXtended ISL) is a logical link connecting base switches together to form the base
fabric. It carries frames from the base fabric and other logical fabrics using the encapsulation
and inter-fabric link (IFL) header as identifiers.
Backbone E_Port This is the E_Port on a Fibre Channel Routing (FCR)-enabled switch.
Brocade Flow Vision terminology
Flow Vision Administrators Guide 13
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