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USG2100 can’t obtain public network ip address after configuring PPPOE

Publication Date:  2012-09-11 Views:  767 Downloads:  0

Issue Description

Network topology:
USG ------ Public Network
User’s USG access to public network by PPPOE, and can’t obtain public network ip address after configuration.

Alarm Information


Handling Process

1. Connected PC with public network, and found that dial normally. It is not the carrier’s problem.

2. Checked the configuration.
link-protocol ppp
ppp authentication-mode pap
ppp pap local-user password simple072777
ppp ipcp dns admit-any
ip address ppp-negotiate
dialer user
dialer-group 1
dialer bundle 1
After check, found the red command is the reason of this problem. It’s no need to configure the command because the device is PPPOE client. Delete this command, and the problem is solved.

Root Cause

1. Configuration problem.
2. Carrier problem.


ppp authentication-mode pap
This command is only configured when device is PPPOE server. In this case, it should not be configured.