IBM NH2025-10 manual Connecting Ethernet Devices, Grounding, Connecting Your Network

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Installing and Setting Up the Unit

Grounding

Reliable grounding of this equipment must be maintained. Particular attention should be given to electrical connections when connecting to a power strip, rather than direct connections to the electrical outlet.

Connecting Ethernet Devices

For optimum performance, the Ethernet segments connected to the NH2025-10 must be configured carefully. Generally, the segments should be configured so that machines on a given port communicate primarily among themselves; that is, most traffic does not need to cross the switch. However, this is not the best configuration for certain situations.

Connecting Your Network

The cable connections to the 10/100BaseTX ports can be UTP or STP Category 3 and above, and cable length is limited to 100 meters on each port. STP cable carries a higher quality of signal and is less sensitive to environmental noise.

The RJ-45 ports of the switch are defined as MDI-X ports.

The 10/100BaseTX ports on the NH2025-10 are designed to be connected directly to a workstation, using a standard straight through patch cable. In order to cascade switches or connect a hub to the switch, a crossover cable must be used.

Figure 7 - Straight Cable Connection Between a NH2025-10 and a Workstation

Figure 8 - Crossover Cable Connection Between an NH2025-10 and a Hub

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Contents Page Page CE Mark Standards ComplianceFCC Notice Page Contents Configuring, Modifying, and Monitoring the Unit Iii Statistics General View OverviewNetwork Management Systems ApplicationsManagement Feature SummaryPerformance/Configuration Page Installing the Unit Installing and Setting Up the UnitRack Mounting Front Panel Rear Panel Installing Modules in the UnitEM2003-2FO Modules for NHEM2003-1GE Input Supply Connecting Power to the UnitEM2003-8TP Em2003-2GEGrounding Connecting Ethernet DevicesConnecting Your Network Page Logging Into the Command Line Interface Connecting to the Management PortSetting the IP Address Getting StartedAccessing the Command Line Interface Remotely Verifying the InstallationSYSconsole set-ip SYSconsole ping 192.1.1.1Command Conventions Using the Command Line InterfaceCommand Line Help Getting Command Parameter HelpSYSconsole ping 129.1.1.7 ? Getting Command Group HelpUsing Command Wildcards SYSconsoleget-co Retrieving Command HistoryConnectivity matrix Nonexistent Command Command Line ErrorsSYSconsole pin Command ‘pin’ not found Incorrect Number of ParametersConsole Commands Configuring, Modifying, and Monitoring the UnitCompletes command Help-kbdBanner LoginClear LogoutSet-passwd Sys-stat System CommandsCold-reset Warm-resetGet-stst-level Set-stst-levelSet-tftp-srvr Get-tftp-srvrSet-tftp-mode Get-tftp-modeIP Configuration IP CommandsGet-ip Get-ip-cfgSet-ip Setting an IP addressSet-ip-cfg IP broadcast SYSconsoleBootp Configuration Erasing an IP ConfigurationConfiguring a Gateway Get-arp-tbl Address Resolution Protocol ARPDel-arp-entry Add-arp-entryDisplaying the Port Configuration Port configurationGet-arp-stats Get-port-cfg dport pipe allSet-port-state Setting the port configurationSet-port-cfg Set-fctrl Setting the flow controlGet-fctrl Setting the EtherChannel Configuration Getting the EtherChannel ConfigurationEtherChannel Get-ec-tblSet Port Priority Deleting the EtherChannel Configuration del-ecPort Priority Get Port Priority Modifying the Switch PolicyVlan Priority Get-priority-port-cfgHow the STP Topology Stabilizes Spanning Tree Protocol STPSpanning Tree Parameters Selecting a Designated Switch/BridgeRoot Bridge Manually Designating a Root BridgeSpanning Tree Commands Using STP to Manage Redundant LinksTopology Change Notification Bpdu Spanning Tree and Vlan restrictionsViewing Bridge Parameters Configuring the BridgeGet-st-bcfg Max Age set-br-maxageSetting Port Configuration Viewing the Port ConfigurationHello Time set-br-hellot Get-st-pcfgSet-prt-pcost dport pathcost Set-prt-enb port-number enabledisableSet-prt-prio 4 Priority was changed for port SYSconsole Aging Configuration Switching CommandsLearning Table Get-lt-ageGet-lt-16 Get-lt-entryFind-lt-addr Adding Static Entries Deleting EntriesSetting the VBC mode Viewing the VBC ModeVirtual Broadcast Domain Creating VBC DomainsGet-vbc-matrix Viewing VBC MatrixGet-vbc-tbl Deleting a VBC Virtual NetworkingDel-vbc-domain Del-vbc-domain runnvram domainidSetting the Vlan Mode Viewing the Vlan ModeSYSconsoleset-vlan-mode run tag Set run Vlan mode tag OK Important ConsiderationsViewing the Isvlan Mode Inter-Switch Vlan or IsvlanTag Field Format Principles of IsvlanServer Port Setting a Tagged PortRemoving a Tagged Port Creating a Server PortCreating a Vlan Viewing Vlan ConfigurationRemoving a Server Port Del-vlan Deleting a VlanGet-vlan-entry Viewing the Management Tag Vlan ManagementModifying the Management Tag Deleting the Management from a VlanPhysical configuration schema VLAN, Server-port, Example of ConfigurationVlan Server Port ConfigurationApplication Creating a Vlan with Port ManagementPayroll Vlan Configuration Vlan ConfigurationFinance Vlan Configuration Checking the ConfigurationPing Commands Utilities CommandsPort mirroring PingSaving the Configuration Setting the Monitoring PortMonitoring with monitor Stopping MonitoringErasing the Nvram configuration Viewing the Nvram ConfigurationSetting the Frame Generator Frame GeneratorStopping the Frame Generation Snmp basic configurationNBase-Xyplex Snmp Support Setting the Read or Write Community Snmp Community String CommandsViewing the Community String Get-commViewing the Authentication Trap Status Setting Authentication TrapsSetting the Authentication Trap Snmp TrapsAdd-trap Configuring the Trap StationsGet-traps Example Statistics Clearing the Switch CountersGetting Collisions on a Port Clr-cntGetting the Packet Size Distribution Rmon StatisticsGetting Rmon Statistics Group for a Port Getting the Management Counters Page Trouble Shooting Mailservice@mrv.com Commands Quick Reference ARP Commands Ping CommandsEtherChannel Commands Snmp CommandsVirtual LAN Commands Switching Database CommandsPort Monitoring Port Configuration CommandsSwitching Statistics Commands Spanning Tree Commands Page Snmp System Default ValuesPage Download Procedure Server mode Appendix B Firmware Download Using TftpDownload Procedure Client Mode ∙ set-tftp-mode client Tftp Recovery Breaking into the BootROMCompatibility Appendix C Technical SpecificationsStandards Compliance