BayStack 420-24T Switch

Supports SpanningTree ProtocolBuilt-in support for Spanning TreeProtocol (IEEE 802.1D) detects andeliminates logical loops in the network.When multiple paths exist, the switchwill automatically place some ports onstandby to form a network with the mostefficient traffic pathways, avoiding thecontinual looping of frames.Flexible ManagementPlatformsWeb-based network management makesmanaging the BayStack 420-24T Switchor stack easy with a web browser. Plus,the stack can be managed as a single entitywith one IP address. Furthermore,the BayStack 420-24T Switch can beconfigured and managed by using theJava Device Manager Software, whichcan be downloaded free from the NortelNetworks web site, or by using Optivity*NMS software.Figure 2: Typical small/medium businessapplication – single-floor.Stack of BayStack420 SwitchesARNRouterWANMultiLinkTrunkingDesktopPCsServersAdvanced ManagementFeaturesBootP and TFTP support allowscentralized switch IP address assignment,software upgrades, and SNMP agentupdates over the network. The RADIUSbasedsecurity feature uses the RADIUS(Remote Authentication Dial-In UserServices) protocol to authenticate localconsole and TELNET logins.BaySecure Secure LAN AccessBaySecure security feature allowsauthentication of all access, not onlyto the switches for management and configuration,but access to the infrastructurethrough these switches. This softwarefeature limits access to the network toauthorized and trusted users with fulltracking of network connections.Concurrent RMONon Every PortThis enables standards-based RMONmanagers and Optivity applications tomanage the network, as well as thedevices, with four groups of RMON(Alarms, Events, History, and Statistics)on every port.Port MirroringPort mirroring copies packets flowing intoa specified port and sends the replicateddata to the mirrored port for in-depthanalysis of switched traffic patterns totrouble-shoot problems and optimizenetwork configurations.Recovery ConfigurationFile SupportThe configuration file feature allows forstoring of switch or stack configurationparameters on a TFTP server.Configuration parameters can be retrievedautomatically to configure a replacementswitch or stack with the same configuration.For new installations or when a switchhas failed, this feature saves time inreconfiguring another switch or stack.GigabitUplinksFigure 3: Typical medium businessapplication – multi-floor.DistributedMultiLinkTrunkingStacks of BayStack420 SwitchesBayStack 450/BPSswitch stackServersDesktopPCsFail-safe StackingARNRouterFloor 3Floor 2Floor 1WANRJ-45 ConnectorsWired for MDI-XAll 10/100 autosense Ethernet portconnectors are wired for MDI-Xconnections to other devices. Inexpensivestraight-through unshielded twisted pair(UTP) cables can be used to provideswitch connections to servers, desktops,and internetworking devices.Power and Space SavingsLow power consumption of 50W resultsin lower operating costs. 1U high unitwith smaller footprint saves space.BayStack 420-24T Switch Product Brief 3