Manuals / Lancom Systems / Computer Equipment / Network Router

Lancom Systems 1711, 821, 1621 Change then to menu item Expert configuration Status LAN statis

Models: 1621 1711 821

1 82

Download 82 pages 23.97 Kb

Page 73

Change then to menu item Expert configuration Status LAN statis-

LANCOM 821 ADSL/ISDN – LANCOM 1621 ADSL/ISDN – LANCOM 1711 VPN

Chapter 9: Troubleshooting

tested (e.g. “DSL1” or “LAN-1”). Pay attention to the correct spelling of the interfaces. Start the test for the specified interface by clicking on Execute.

EN

Change then to menu item Expert configuration Status LAN statis-

tics Cable test results. The results of the cable test for the individual interfaces are show up in a list.

The following results can occur:

OK: Cable plugged in correctly, line ok.

open with distance “0m”: No cable plugged in or interruption within less than 10 meters distance.

open with indication of distance: Cable is plugged in, but defect (short- circuited) at the indicated distance.

Impedance error: The pair of cables is not terminated with the correct impedance at the other end.

73

Image 73

Lancom Systems 1711, 821, 1621 manual Change then to menu item Expert configuration Status LAN statis

Contents

LANCOM 821 ADSL/ISDN - LANCOM 1621 ADSL/ISDN - LANCOM 1711 VPN 2005 LANCOM Systems GmbH, Wuerselen Germany. All rights reserved Preface Security settingsThank you for placing your trust in this LANCOM product User manual and reference manualThis documentation was compiled … Model variantsinfo@lancom.de Important instruction that should be followed Notes symbolsAdditional instructions which can be helpful, but are not required Installation ContentsBasic configuration Setting up Internet accessLinking two networks Providing dial-up accessSending faxes with LANCAPI Security settingsAppendix TroubleshootingHow does ADSL work? IntroductionHigh speed via standard telephone lines would be possible when relying solely on the telephone networkIdeal for Internet surfers All services via a single cable-thanks to the splitterInternet ADSL providerCode ADSL-over-ISDN or ADSL-over-POTS?1.2 Which use does VPN offer? Conventional network infrastructure Networking via the Internet Further important features of the Firewall are Intrusion Detection 1.3 FirewallInternet Denial-of-Service Protection 1.4 What does a router do?Quality-of-Service / Traffic management 1.4.2 Areas of deployment for routers 1.4.1 Bridgehead to the WANLANCOM 821 ADSL 1.5 What can your LANCOM do?LANCOM 1621 ADSL LANCOM 1711 DSLLANCOM 1621 ADSL LANCOM 821 ADSLLANCOM 1711 DSL WAN connectionLANCOM 821 ADSL ConfigurationLANCOM 1621 ADSL LANCOM 1711 DSL2.1 Package contents 2 Installation2.2 System preconditions 2.3.1 Status displays 2.3 Introducing LANCOMFront side Meanings of the LEDs Top panelCompletely deactivate the lock that has been triggered set limit to Flashing Power LED but no connection?The Online LED indicates the overall status of all WAN ports LANCOMConnection status of the WAN connection Connection status of the ADSL linkData traffic via the ADSL link Data traffic via the DSL connectionStatus of ISDN S0 connection Status of the four LAN ports in the integrated switchSeparate status display for both ISDN B channels Voltage switch Connection for the included power adapter Reset switch 2.3.2 The back of the unitSwitch with four 10/100Base-Tx connections Serial configuration port ISDN/S0 port ADSL port2.4 Hardware installation using the included power adapter ADSL connector cable transparent plugsConnect to power - Connect socket DSL - connect the WAN interface2.5.1 Starting LANCOM setup 2.5 Software installation2.5.2 Which software should you install? 3.1.1 TCP/IP settings 3 Basic configuration3.1 Which information is necessary? Configure manually nevertheless? New LAN-fully automatic configuration possibleInformation required for manual TCP/IP configuration IP address and netmask for the LANCOM3.1.3 Settings for the DSL connection 3.1.2 Configuration protection3.1.4 Settings for the ISDN connection Enable DHCP server?LANconfig 3.2 Instructions for LANconfig3.1.5 Connect charge protection Complete the configuration with Finish Network without DHCP server 3.3 Instructions for WEBconfigNetwork with DHCP server Starting the wizards in WEBconfigIf you cannot access an unconfigured LANCOM, the problem may be due to the netmask of the LAN with less than 254 possible hosts net- mask 255.255.255.0, please ensure that the IP address x.x.x.254 is located in your own subnet Entering the password in the web browser IP address assignment via the LANCOM default 3.4 TCP/IP settings to workstation PCsIP address assignment via a separate DHCP server Manual IP address assignmentPage Does the setup wizard know your Internet provider? 4 Setting up Internet accessAdditional information for unknown Internet providers ADSLUser name and password Additional connection optionsProtocol PPPoE, PPTP or Plain Ethernet IPoE Dynamic channel bundling ISDN only4.2 Instructions for WEBconfig 4.1 Instructions for LANconfigTools Setup Wizard LANconfig Quick access to the setup wizards5 Linking two networks Always configure both sidesSecurity aspects 5.1.1 General information 5.1 What information is necessary?NetBIOS routing for access to remote net IPX routing for access to remote networkHide local stations for access to remote net TCP/IP routing for access to remote networkNetmask 5.1.2 Settings for the TCP/IP routerDNS access to the remote LAN 5.1.3 Settings for the IPX routerExtranet VPN 5.1.4 Settings for NetBIOS routing 5.3 Instructions for WEBconfig 5.2 Instructions for LANconfigPing - quick testing for TCP/IP connections 6.1 Which information is required? 6 Providing dial-up accessSecurity aspects Notes to the individual values 6.1.1 General informationCoupling EntryThe ISDN calling line identity CLI 6.1.2 Settings for TCP/IP6.1.4 Settings for NetBIOS routing 6.1.3 Settings for IPXUser SAMPLE 6.2.1 Dial-up via VPN 6.2 Settings for the dial-in computer6.2.2 Dial-up via ISDN 6.3 Instructions for LANconfig 6.4 Instructions for WEBconfig ISDN 7 Sending faxes with LANCAPISelect the entry Install LANCOM software in the setup program of your 7.1 Installation of the LANCOM CAPI fax modemLANCOM CD Select the option Printers and Faxes from the control panel 7.2 Installation of the MS Windows fax service7.3 Sending a fax 7.3.2 Send a fax with the MS Windows fax service7.3.1 Send a fax with any given office application LANCOM 821 ADSL/ISDN - LANCOM 1621 ADSL/ISDN - LANCOM 1711 VPN 8.1 The security settings wizard 8 Security settings8.1.1 Wizard for LANconfig 8.2.1 Wizard for LANconfig 8.1.2 Wizard for WEBconfig8.2 The firewall wizard 8.2.2 Configuration under WEBconfig 8.3 The security checklistRules Have you permitted remote configuration? Have you assigned a password for the configuration?Have you activated the Firewall? Do you make use of a ’Deny All’ Firewall strategy?Is your saved LANCOM configuration stored in a safe place? Have you excluded certain stations from access to the router?Have you closed critical ports with filters? Problems with the cabling? 9 Troubleshooting9.1 No WAN connection is established 9.2 DSL data transfer is slow9.3 Unwanted connections under Windows XP 9.4 Cable testingIncreasing the TCP/IP window size under Windows LAN statisticsChange then to menu item Expert configuration Status LAN statis 10 Appendix 10.1 Performance data and specificationsLANCOM LANCOMLANCOM Temperature rangeLANCOM LANCOM10.2.1 ADSL interface 10.2 Contact assignmentConnector LANCOM10.2.3 ISDN-S0 interface 10.2.2 Ethernet WAN interface LANCOM 1711 VPNConnector Connector10.3 CE declaration of conformity 10.2.5 Configuration interface Outband10.2.4 Ethernet interfaces 10/100Base-T ConnectorNumerics IndexISDN leased line option 15, 17see status displays Setting up access to the InternetWide Area Network WAN Stateful Inspection Firewall