3Com MSR 50 Series Configuration Manual page 401

Network diagram
Figure 102 Connect a LAN to the Internet through ADSL
DSLAM
Eth 1 / 1
192 . 168 . 1 . 1 / 24
Router A
Host A Host B
Configuration procedure
1 Configure Router A as PPPoE client
# Configure the dialer interface.
<RouterA> system-view
[RouterA] dialer-rule 1 ip permit
[RouterA] interface dialer 1
[RouterA-Dialer1] dialer-group 1
[RouterA-Dialer1] dialer bundle 1
[RouterA-Dialer1] ip address ppp-negotiate
[RouterA-Dialer1] ppp pap local-user user1 password cipher 123456
[RouterA-Dialer1] quit
# Configure a PPPoE session.
[RouterA] interface ethernet 2/0
[RouterA-Ethernet2/0] pppoe-client dial-bundle-number 1
[RouterA-Ethernet2/0] quit
# Configure the LAN interface and the default route.
[RouterA] interface ethernet 1/0
[RouterA-Ethernet1/0] ip address 192.168.1.1 255.255.255.0
[RouterA-Ethernet1/0] quit
[RouterA] ip route-static 0.0.0.0 0 dialer 1
If the IP addresses of the PCs in the LAN are private addresses, you need to
configure NAT (Network Address Translation) on the device. The NAT
configuration will not be elaborated here. For details, refer to
Configuration" on page
2 Configure Router B as PPPoE server
Router B
ATM 1 / 0
PPPoE Server
Modem
PPPoE Client
Eth 1 / 0
Host C
679.
PPPoE Configuration Example
"NAT-PT
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