61200176L3-1 Express 4110/4120 User Manual i
Table of ContentsQuick Startup Guide.................................................................................................... Quick Start-1
Setting up the ISDN Line ...............................................................................................Quick Start-1
Connecting to an Internet Service Provider ................................................................Quick Start-2
Internet Access using Network Address Translation (NAT) ..................... Quick Start-2
Multiprotocol Routing Between Two LANS ...............................................................Quick Start-3
Remote/Home Office Accessing the Corporate LAN .................................Quick Start-3
Chapter 1 Understanding ISDN and the Express 4110/4120................................................... 1-1
ISDN Overview ................................................................................................. ..... ...........................1-1
The Express 4110/4120 .....................................................................................................................1-1
Applications .........................................................................................................................1-2
Single User to Corporate LAN .............................................................1-2
Single User IP to Internet Service Provider (ISP) using Network Ad-
dress Translation (NAT) .......................................................................1-4
Multiple Users to Internet Service Provider (ISP) using NAT ........ 1-6
Small Office - Home Office (SOHO) to Corporate LAN .................. 1-8
Demand Routing and Bridging with the Express 4110/4120 .................................... 1-10
Factory Default ................................................................................................... 1-10
Bridging ............................................................................................................... 1-11
IP Routing............................................................................................................ 1-12
IPX Routing......................................................................................................... 1-13
Connection List - Simplifying and Enhancing the Dial Function ............... 1-13
Concurrent Routing and Bridging .................................................................................1-13
Routing over PPP Bridging .............................................................................................1-13
Network Address Translation Mode .............................................................................1-14