
Chapter 1: Understanding ISDN and the Express L128/L128T
16
Express L128/L128T User Manual
61202.070L1-1
Network Address Translation Mode
NAT is a special mode of operation in which the Express L128/L128T obtains
a dynamically assigned IP address from the peer router (typically an Internet
Service Provider). This allows a network of computers to benefit from Ether-
net to ISDN speeds while still appearing to the Internet Service Provider (or
central site router) as a single IP address, which is typical of PC based serial
dial-up solutions.
A call is initiated to the ISP using the Dial menu or demand for a Connection
List profile that has the IP parameter
NAT
set to
Yes
. The network computer’s
IP stack may use DHCP to request an IP address, default gateway address, and
domain name server addresses from the Express L128/L128T.
Front Panel
Figure 1-6 on page 17 shows the front panel of the Express L128/L128T. The
indicators are divided into LAN functions, WAN functions, and Test func-
tions.
LAN Indicators
TX/RX
Flashes green when transmitting data onto the 10BaseT
connector.
Flashes yellow when receiving data from the 10BaseT
connector.
LI
Link integrity. Illuminates when there is a good connection
between the Express L128/L128T and the Hub/NIC card.
Содержание Express L128
Страница 15: ...List of Figures x Express L128 L128T User Manual 61202 070L1 1...
Страница 17: ...List of Tables xii Express L128 L128T User Manual 61202 070L1 1...
Страница 23: ...Quick Startup Guide 6 Express L128 L128T User Manual 61202 070L1 1...
Страница 43: ...Chapter 2 Installation 26 Express L128 L128T User Manual 61202 070L1 1...
Страница 123: ...Chapter 3 Terminal Menu Operation and Structure 106 Express L128 L128T User Manual 61202 070L1 1...
Страница 131: ...Chapter 4 Troubleshooting 114 Express L128 L128T User Manual 61202 070L1 1...
Страница 155: ...Appendix B Log Messages 138 Express L128 L128T User Manual 61202 070L1 1...
Страница 159: ...Appendix C SNMP 142 Express L128 L128T User Manual 61202 070L1 1...
Страница 165: ...Appendix E Terminal Mode Commands 148 Express L128 L128T User Manual 61202 070L1 1...
Страница 177: ...Appendix F Frame Relay Firmware Version 160 Express L128 L128T User Manual 61202 070L1 1...
Страница 187: ...Glossary 170 Express L128 L128T User Manual 61202 070L1 1...
Страница 199: ...Index 182 Express L128 L128T User Manual 61202 070L1 1...