Locating Problems With The Dcc Debugging Information - 3Com 3C13636 Configuration Manual

3Com Router 3000 Ethernet Family
Configuration Guide
Troubleshooting:
Check whether the same link protocol is configured on the local and remote ends,
and whether the configured PPP authentication parameters are correct. Use the
debugging ppp all command to enable PPP debugging to view the PPP
negotiation process, and make sure that the PPP negotiation parameters are
correct.
Check whether the network address has been correctly configured on the dial
interface (physical interface or dialer interface).
Check whether DCC has been enabled on the dial interface.
Check whether the commands dialer-group and dialer rule has been configured,
and whether the configurations are correct. Make sure that dialer rule is
configured to permit the packet and the two commands are associated.
Use the commands debugging dialer event and debugging dialer packet to
debug DCC, and locate the problem according to the output information.

1.5.2 Locating Problems with the DCC Debugging Information

I. Enabling DCC debugging
Execute the following commands in system view for displaying the DCC debugging
information:
[3Com] debugging dialer event
[3Com] debugging dialer packet
[3Com] info-center enable
II. Debugging messages, possible reasons and solutions
The following table lists the debugging messages that may appear when DCC cannot
reach the remote end, gives the possible reasons, and provides some solutions.
3Com Corporation
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Chapter 1 DCC Configuration