BROCADE IP PRIMER

GlossaryRoot switch In Spanning Tree Protocol, this is the switch that has won theelection. The root switch's links are always active. If any other switch has a linkthat could cause a loop, their links are disabled.Route redistribution This is the process in which routes from one routing protocolare translated and advertised through a different routing protocol. Whilethis is essential in some configurations, it's generally discouraged, as much islost in translation.Routing Bridges These are a new type of L2 device that implement the TRILLprotocol, perform L2 forwarding, and require little or no configurations. Usingthe configuration information distributed by the link-state protocol, RBridgesdiscover each other and calculate the shortest path to all other RBridges onthe VLAN.RST Reset. This is a special TCP segment that forcibly terminates the session.RSTP Rapid Spanning Tree Protocol. This is defined by IEEE 802.1w. It is anenhancement of the original Spanning Tree Protocol (IEEE 802.1d). It provideslayer 2 loop protection with sub-second convergence.Segment This is the data unit of the Transport Layer.ServerIron In the Brocade line, the ServerIron is a Layer 4-7 switch. It providesload balancing, but it also provides much more. The ServerIrons come in bothchassis and stackable configurations.Session Layer This is the fifth layer of the OSI Reference Model. This layerkeeps track of conversations. This may include multiple simultaneous conversations,as well as full-duplex and half-duplex conversations.Session persistence This is the concept of load balancing a client to the samereal server it started with. There are many ways to achieve this, depending onthe application that is being load balanced.sFlow This is a monitoring protocol that provides an ability to capture trafficflows for analysis. It uses a sample of all packets that traverse a given port orseries of ports.Shadow port A shadow port is a phony port defined in the real server thatallows the real server to be bound to more than one virtual server on the sameport.SLB Server Load Balancing. This is the concept of using a load balancer toreceive incoming requests and pass these requests through to actual serversto process. The replies are returned to the load balancer, which pass the replyback to the client. This gives the client the illusion that it has been interactingwith one host.SNMP Simple Network Management Protocol. This is a Layer 7 protocol thatprovides monitoring information of a network device.Brocade IP Primer 417