HiPath 3000/5000 in the LAN Network Nur für den internen Gebrauch
A31003-H3590-S100-7-7620, 06/2012
13-44 HiPath 3000/5000 V9, Service documentation
h3h5_in_the_lan.fm
HG 1500 Board
The T-DSL modem is connected to the board via a 10BaseT interface. The PPPoE (Point to
Point Protocol over Ethernet) protocol is used for the connection.
13.6.14.3 IP Address Mapping
With the expansion of the Internet, it has become common practice to use the short but globally
unique IP addresses exclusively for the Internet and to revert to private (not public) IP address-
es for IP networks within companies.
Consequently, addresses from the same IP network can frequently be used in many compa-
nies.
The “IP address mapping” feature was developed to enable users to reach these addresses
via a unique routing entry despite the multiplicity of entries.
When routing to specific partners defined during configuration, HG 1500 exchanges the private
IP addresses used in its own LAN for other IP addresses and can in return be contacted by
external users via these IP addresses.
Figure 13-7 Internet Access via T-DSL
LAN
ISDN network
main station
HG 1500 as router and/or router with NAT
(Network Address Translation)
Client with Internet browser, e-mail client
Internet
Splitter
T- D S L
Modem
(NTBBA)
NTBA
HiPath 3300/3350,
HiPath 3500/3550
or HiPath 3800
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