NetComm NB712 manual Straight and crossover cable configuration, Straight-Through Cabling

Page 113

Straight and crossover cable configuration

There are two types of the wiring: Straight-Through Cables and Crossover Cables. Category 5 UTP/STP cable has eight wires inside the sheath. The wires form four pairs. Straight-Through Cables has same pinouts at both ends while Crossover Cables has a different pin arrangement at each end.

In a straight-through cable, wires 1,2,3,4,5,6,7 and 8 at one end of the cable are still wires 1~8 at the other end. In a crossover cable, the wires of 1,2,3,6 are reversed so that wire 1 become 3 at the other end of the cable, 2 becomes 6, and so forth.

To determine which wire is wire 1, hold the RJ-45 cable tip with the spring clip facing towards the ground and the end pointing away from you. The copper wires exposed upwards to your view. The first wire on the far left is wire 1. You can also refer to the illustrations and charts of the internal wiring on the following page.

Straight-Through Cabling

 

Figure 3

Wire

Becomes

 

 

1

1

2

2

3

3

6

6

 

 

Cross-Over Cabling

 

 

 

 

Figure 4

 

 

Wire

 

Becomes

 

 

 

 

 

 

 

 

 

1

 

3

 

 

 

2

 

6

 

 

 

3

 

1

 

 

 

6

 

2

 

 

 

 

 

 

Note:

To prevent loss of signal, make sure that the length of any twisted-pair connection

 

does not exceed 100 metres.

 

 

NB712 /

NB714 User Guide

113

YML829

Rev1

 

Image 113
Contents Page Contents NB714 User Guide Introduction FeaturesPackage Contents Routing SpecificationBridging SecurityATM QoS IndicatorsAAL5 Encapsulation WAN InterfacePhysical/Electrical ApplicationMemory Product InformationFirewall There are three types of firewall Types of FirewallPacket Filtering Application Gateway Denial of Service AttackCircuit Gateway SYN Flood Ping of deathIcmp Flood UDP FloodFrame Specification Vlan Virtual Local Area NetworkVID uniquely identifies the Vlan to which the frame belongs ApplicationsLED status Getting to know the routerFront Panel LAN 1,2,3,4 Rear PanelCheck the Terminal Access Program Connecting your G.SHDSL Modem RouterDetermine Connection Setting Check the Ethernet Adapter in PCBridge EoA Route EoA IPoA PPPoA PPPoE Install the Shdsl RouterCross-over Ethernet cables can be used Port router with network topologyConfiguration via Web Browser Router, which will lose any previous configuration Click Basic for basic installation Basic SetupSystem error or disconnection Enter Host Name Bridge ModeLAN Parameters Enter VPI Enter VCI Click LLC Click Next WAN1 ParametersRouting Mode LAN IP Type Click Next to setup WAN1 parametersDhcp Client IP type Dhcp ServerIP Address Subnet MaskDNS Server Trigger Dhcp ServiceRelay Dhcp relayAAL5 Encap PPPoE or PPPoAProtocol For more information, refer to the section on NAT/DMZPassword Confirm PasswordUsername Idle TimeEprom Gateway IPoA or EoAEprom Advanced Setup Link Type Annex TypeData rate Data RateMargin range is from 0 to Shdsl SNR marginMargin, the better the line connection Reconnect for better line connectionWAN UBR Unspecified Bit Rate QoS Quality of ServiceCBR Constant Bit Rate PCR Peak Cell Rate in kbpsBridge Eprom Vlan Packets PvidRoute RIP ModeAuto RIP Summary Press ModifyPoison Reverse Authentication requiredRIP Version NAT/DMZ Multi-NAT Multi-DMZVirtual Start IP Address Count Global Start IP AddressVirtual Server Basic Firewall Security FirewallAutomatic Firewall Security Click Advanced Firewall Security and then press Finish Advanced Firewall SecuritySYN Attack Connections and will be unresponsivePing of death attack attempts to crash your system by Addresses originating from your networkDescription DirectionSrc. IP Address Dest. IP AddressFiltering rule will be configured as follow Filtering Rule for Smtp connectionFiltering Result Update Filtering Rule10.0.0.0 172.16.6.0 Permit 10.1.99.0 172.16.0.0 Deny Any When the rule is ordered as ABCRule Order IP QoS NB714 User Guide Administration Security NB712 / NB714 User Guide MIB SnmpCommunity Snmp statusVersion Community Click on Time Sync Time SyncTime Zone Sntp serviceTime Server Utility System Info Backup Configuration Restore Configuration10.2 Config Tool Lose all the configured parametersUpgrade To logout the router, press logout LogoutRestart You can monitor the following StatusLAN Parameters LAN-to-LAN connection with bridge ModeCO side Enter IP 192.168.1.1 Enter Subnet Mask WAN1 ParametersEnter Gateway 192.168.1.1 Enter Host Name Enter VPI Enter VCI EncapVCI32 EncapLLC CPE SideHost Name Enter Soho Dhcp Service LAN to LAN Connection with Routing ModeClick Route and CO Side then press Next IP Address 192.168.20.1 Subnet Mask 255.255.255.0 Host NameWAN Parameters Click Next to setup the IP parametersIP Address 192.168.10.1 Subnet Mask 255.255.255.0 Host Name Click Route and CPE Side then press Next192.168.30.2 Serial Console Useradmin PasswordTelnet Baudrate 9600 Data Bits Parity Check Stop Bits Flow-controlOperation Interface Window structure Ctrl + C To quit the configuring item Ctrl + Q For help Menu Driven Interface CommandsTo choose another parameters Menu Tree 14.7 Configuration Done via utility command Ping Packet internet groper command AdminUtility Exit Quit systemStatus System ShowConfig ScriptAdministration RebootWrite PingUser Profile Edit Community Entry List Show SnmpSupervisor Password and ID Sntp Move the cursor to service and press enterMove the cursor to sntp and press enter Move the cursor to timeserver1 and press enterMove the cursor to list and review the setting Utility SetupExit ModeShdsl 14.16.3 WAN After enter add menu, the screen will prompt as follow BridgeMove the cursor to vlan and press enter VlanFor each VLAN, Vlan ID is a unique number among 1~4095 14.16.6 802.11Q VlanFollow the following steps to configure 802.11q Vlan You can review the list of RIP parameters via list command Generic command can setup RIP mode and auto summery modeRoute Screen will display the followingIP share 14.16.8 LANYou can configure NAT parameters in nat menu 14.16.10 NATMapping After key in enter, the screen will prompt as below 14.16.11 PATfirewall security level can configure via level command You can enable the demilitarized zone via active command14.16.12 DMZ FirewallActive DoS Protection IPQoS Dhcp You can view the Dhcp configuration via list commandHost name DefaultDNS proxy RJ-45 Network Ports Appendix a Cable Information10Mbps 100MbpsCross-Over Cabling Straight and crossover cable configurationStraight-Through Cabling No connection Shdsl Line Connector Console CableRxD O TxDContact Information Appendix B Registration and Warranty InformationProduct Warranty