ELSA LANCOM Business LC-4X00 User manual

Manual
왎
ELSA LANCOMTM Business
No. 20857/0999

© 1999 ELSA AG, Aachen (Germany)
Whiletheinformationinthismanualhasbeencompiledwithgreatcare,itmaynotbedeemedanassur-
ance of product characteristics. ELSA shall be liable only to the degree specified in the terms of sale
and delivery.
Thereproductionanddistributionofthedocumentationandsoftwaresuppliedwiththisproductandthe
useofitscontentsissubjecttowrittenauthorizationfromELSA. Wereservetherighttomakeanyalter-
ations that arise as the result of technical development.
ELSAisDINENISO9001certified. TheaccreditedTÜVCERTcertificationauthorityhasconfirmedELSA
conformity to the worldwide ISO 9001 standard in certificate number 09 100 5069, issued on June 15,
1998.
Trademarks
Windows®, Windows NT®and Microsoft®are registered trademarks of Microsoft, Corp.
Allothernamesmentionedmaybetrademarksorregisteredtrademarksoftheirrespectiveowners. The
ELSA logo is a registered trademark of ELSA AG.
Subject to change without notice. No liability for technical errors or omissions.
www.elsa.com
Aachen, September 1999
ELSA AG
Sonnenweg 11
52070 Aachen
Germany
ELSA, Inc.
2231 Calle De Luna
Santa Clara, CA 95054
USA

Preface
Thank you for placing your trust in this ELSA product.
Byselectingthe
ELSALANCOM Business youhavechosen arouter whichyoucanuseto
connectlocalareanetworksorsingleworkstations with other networks via ISDN lines.
Thehighestqualitystandardsinmanufacturingandstringentqualitycontrolarethebasis
for high product standards and consistent quality of ELSA products.
Documentation
The accompanying documentation comprises:
쮿Installation Guide
Hardware installation and configuration examples
쮿Manual
Extended description of the router functions and operating modes
쮿CD containing electronic documentation
Reference manual, complete description of the menu
Ouronlineservices(Internetserverwww.elsa.com)areavailabletoyouaroundtheclock
shouldyouhave any queriesregardingthetopicsdiscussedin this manualorrequireany
further support. In the 'Support' file section under 'Know-How', you can find answers to
frequently asked questions (FAQs). The KnowledgeBase also contains a large pool of
information. Current drivers, firmware, tools and manuals can be downloaded at any
time.
The KnowledgeBase can also be found on the CD. Just open the file \Misc\Sup-
port\MISC\ELSASIDE\index.htm.

Content
ELSA LANCOM Business
V
Content
Introduction ..................................................................................................................1
What does a router do?........................................................................................ 1
What does the
ELSA LANCOM Business offer?................................................... 3
The
ELSA LANCOM Business takes the stage..................................................... 8
What does the unit look like?..................................................................... 8
Node or hub?............................................................................................. 11
CE Conformity..................................................................................................... 11
Configuration modes ................................................................................................13
Many paths lead to the
ELSA LANCOM ............................................................. 13
The direct method: outband................................................................................ 13
Requirements for outband configuration.................................................. 14
Outband configuration using
ELSA LANconfig ......................................... 14
Outband configuration using a terminal program..................................... 14
The user-friendly method: inband....................................................................... 15
Requirements for inband configuration.................................................... 15
Alternatively: Address administration with the DHCP server.................. 15
Beginning inband configuration using
ELSA LANconfig ........................... 15
Start up inband configuration using telnet............................................... 16
Remote access: configuration using a dial-up connection................................. 16
This is what you need for remote configuration....................................... 17
This is how you prepare the remote configuration................................... 17
The first remote connection using a dial-up connection (
ELSA LANconfig )17
The first remote connection using a PPP client and telnet....................... 17
Limiting remote configuration................................................................... 18
Configuration commands ................................................................................... 20
New firmware with FirmSafe............................................................................. 21
This is how FirmSafe works...................................................................... 21
How to load new software....................................................................... 22
Configuration using SNMP................................................................................. 24
General...................................................................................................... 24
Accessing tables and parameters using SNMP....................................... 24
The Management Information Base (MIB)............................................... 26
What's happening on the line?........................................................................... 27
Trace outputs............................................................................................ 27
ELSA LANmonitor ...................................................................................... 29

Content
ELSA LANCOM Business
VI
Operating modes and functions ............................................................................. 33
Security for your configuration........................................................................... 33
Password protection................................................................................. 34
Login barring............................................................................................. 34
Access control via TCP/IP......................................................................... 34
Security for your LAN.......................................................................................... 35
Security check........................................................................................... 35
Callback .................................................................................................... 36
The hiding place—IP masquerading (NAT, PAT)...................................... 37
Call charge management.................................................................................... 37
Charge-based connection limits............................................................... 37
Time-dependent connection control......................................................... 38
Settings in the charge module.................................................................. 38
ISDN connections............................................................................................... 39
Name list................................................................................................... 39
Interface settings...................................................................................... 40
Router interface settings.......................................................................... 41
LANCAPI interface settings...................................................................... 41
Layer list.................................................................................................... 42
Round-robin list......................................................................................... 43
Channel list............................................................................................... 43
PPP list....................................................................................................... 44
Script......................................................................................................... 44
Call acceptance......................................................................................... 45
Number list................................................................................................ 45
Leased lines and backup procedures.................................................................. 45
Setting up fixed connections.................................................................... 46
Dial-up via GSM.................................................................................................. 48
Point-to-point protocol........................................................................................ 48
The protocol.............................................................................................. 49
The PPP list................................................................................................ 50
Everything ok? Checking the line with LCP............................................... 51
Assigning IP addresses via PPP................................................................ 52
Callback functions..................................................................................... 53
Fast ELSA callback.................................................................................... 56
Callback as specified in RFC 1570 (PPP LCP extensions).......................... 56
Channel bundling with MLPPP.................................................................. 57
IPX routing........................................................................................................... 58
Naming IPX addresses.............................................................................. 59
Information about the LAN....................................................................... 59
IPX routing table........................................................................................ 59
What happens when data is transmitted on an IPX network?................. 60

Content
ELSA LANCOM Business
VII
RIP and SAP tables.................................................................................... 61
So many routers around here.................................................................... 61
Redundant routes...................................................................................... 62
Exponential backoff................................................................................... 62
IPX packet filters....................................................................................... 62
IP routing............................................................................................................. 64
The IP routing table................................................................................... 64
TCP/IP packet filters.................................................................................. 67
Proxy ARP.................................................................................................. 68
Local routing.............................................................................................. 68
Dynamic routing with IP RIP...................................................................... 69
IP masquerading (NAT, PAT)..................................................................... 71
DNS forwarding........................................................................................ 73
Policy-based routing.................................................................................. 74
Automatic address administration with DHCP................................................... 74
The router as DHCP server........................................................................ 75
DHCP –'on', 'off' or 'auto'?....................................................................... 75
How are the addresses assigned?............................................................ 76
Configuring the router as a DHCP server.................................................. 79
DNS server.......................................................................................................... 81
What does a DNS server do?.................................................................... 81
Setting up the DNS server........................................................................ 82
NetBIOS proxy..................................................................................................... 84
To the point: What is NetBIOS?................................................................ 84
Handling of NetBIOS packets................................................................... 85
Which preconditions must be fulfilled?.................................................... 86
Linking two Microsoft Networks via ISDN............................................... 88
Dial-up procedure for a remote access station........................................ 90
Search and Find: the Network Neighborhood.......................................... 90
IP pooling for dial-up access............................................................................... 92
Office communications and
LANCAPI................................................................ 92
ELSA LANCAPI.......................................................................................... 92
ELSA CAPI Faxmodem......................................................................................... 96
Installation................................................................................................ 97
Faxing with the
ELSA CAPI Faxmodem..................................................... 97
The least-cost router........................................................................................... 97
Workshop .................................................................................................................103
Configuration using
ELSA LANconfig and the wizards........................... 103
Configuration without wizards................................................................ 103
Which device are you using?.................................................................. 104
Additional information............................................................................ 104
Internet applications......................................................................................... 104

Content
ELSA LANCOM Business
VIII
Internet access for all PCs on the LAN................................................... 105
Intranet with its own Web server on the Internet.................................. 109
LAN to LAN couplings....................................................................................... 114
Networks connected with the IP router............................................................ 115
Networks connected with the IPX router................................................ 120
Remote access.................................................................................................. 124
Remote access with TCP/IP.................................................................... 125
The least-cost router......................................................................................... 130
Appendix ...................................................................................................................137
Technical data................................................................................................... 137
Pin assignments................................................................................................ 138
Warranty conditions......................................................................................... 139
Declaration of conformity................................................................................. 141
Glossary ....................................................................................................................143
Index ..........................................................................................................................151
Description of the menu options (on CD only) .....................................................R1
Status.................................................................................................................. R3
Display and keyboard................................................................................ R4
Status/Connection.................................................................................... R5
Status/Current-time.................................................................................. R5
Status/Operating-time.............................................................................. R5
Status/WAN-statistics.............................................................................. R6
Status/LAN-statistics................................................................................ R8
Status/PPP-statistics................................................................................. R9
Status/IPX-statistics............................................................................... R17
Status/TCP-IP-statistics.......................................................................... R22
Status/IP-router-statistics....................................................................... R28
Status/Config-statistics.......................................................................... R30
Status/Queue-statistics.......................................................................... R30
Status/Connection-statistics.................................................................. R31
Status/Info-connection........................................................................... R32
Status/Layer-connection......................................................................... R33
Status/Call-info-table............................................................................. R33
Status/Remote-statistics........................................................................ R34
Status/S0-bus......................................................................................... R35
Status/Channel-statistics....................................................................... R35
Status/Time-statistics............................................................................. R36
Status/LCR-statistics.............................................................................. R37
Status/Delete-values.............................................................................. R37
Setup................................................................................................................. R37
Setup/WAN-module......................................................................................... R38

Content
ELSA LANCOM Business
IX
Setup/LAN-module................................................................................. R48
Setup/IPX-module................................................................................... R49
Setup/TCP-IP-module.............................................................................. R57
Setup/IP-router-module.......................................................................... R61
Setup/SNMP-module.............................................................................. R69
Setup/DHCP-module............................................................................... R70
Setup/NetBIOS-module.......................................................................... R72
Setup/Config-module.............................................................................. R74
Setup/
LANCAPI -module.......................................................................... R76
Setup/LCR-module.................................................................................. R77
Setup/DNS-module................................................................................. R78
Setup/Time-module................................................................................ R79
Firmware........................................................................................................... R80
Other................................................................................................................. R82
Novell SAP numbers (on CD only) ........................................................................R83
TCP/IP ports (on CD only).......................................................................................R87
ELSA LANCOM Business internal (on CD only) .................................................R91
Script processing.............................................................................................. R91
General.................................................................................................... R91
The script list........................................................................................... R92
CompuServe select................................................................................. R92
Online trace outputs......................................................................................... R93
General.................................................................................................... R93
Control of trace outputs.......................................................................... R94
Examples for control of trace outputs..................................................... R95
Supported protocols and functions......................................................... R95
Policy-based routing....................................................................................... R105
General.................................................................................................. R105
Examples............................................................................................... R106

Content
ELSA LANCOM Business
X