BROCADE IP PRIMER

GlossaryEGP Exterior Gateway Protocol. This may describe any routing protocol thatcommunicates between administrative entities. This also describes a specificrouting protocol (EGP) that was an Internet routing protocol predecessor toBGP.EMI Electromagnetic Interference. This describes any external interferencethat may obstruct or degrade communication on the electrical networkmedium. This is an important issue with copper-based network mediums. It isovercome by shielding, and by distancing the cable from sources of EMI.Enable mode This describes the mode in the CLI in which the user has accessto the full range of CLI commands. This is where changes in the switch's configurationtake place.Ethernet This is a protocol defined in IEEE 802.3. It defines a method to transmitdata using CSMA/CD. It is easily the most popular Layer 2 protocol.ETS Enhanced Transmission Selection. ETS is used with Priority-based FlowControl. ETS establishes priorities and bandwidth limitations so that all typesof traffic receive the priority and bandwidth they require for the proper operationof the server and all applications.FastIron This is the low-end Layer 2-3 switch model of the Brocade line. Theseswitches make good core and edge switches. They come in both chassis andstackable models.FCoE Fibre Channel over Ethernet. FCoE refers to the ability to carry FibreChannel traffic directly over a lossless Ethernet infrastructure known as DataCenter Ethernet.FIN Finish. This TCP segment is part of the four-way segment exchange thatcloses a session. It indicates the end of the session.Firewall This is a network device that monitors traffic traveling through it. Itwill often permit or deny traffic based on criteria defined by the administrator.Depending on the model, it may be able to regulate traffic based on informationcontained in all seven OSI Layers.Flash A special kind of memory that maintains its data even when power islost to the device. The switch's software and Startup config are stored here.Brocade switches provide a primary and a secondary flash, so that you maystore two different software images. A switch may boot from either primary orsecondary flash.Flow control This is the concept of regulating how fast data is transmitted.This is commonly associated with TCP, as it provides this service at Layer 4.This process helps to avoid overwhelming equipment that may be under aheavy load or may have a lesser capacity.FQDN Fully-Qualified Domain Name. In DNS, this is a host name that displaysthe entire path of the name. For example, a relative name might be “www.”The FQDN version of this name might be “www.brocade.com.”410 Brocade IP Primer