Troubleshooting; Troubleshooting Of Dcc - 3Com 3C13636 Configuration Manual

3Com Router 3000 Ethernet Family
Configuration Guide
# Configure a dialer ACL.
<RouterB> system
[RouterB] dialer-rule 1 ip permit
# Set the operating mode of the E1 interface to PRI.
[RouterB] controller e1 1/0/0
[RouterB-e1 1/0/0] pri-set
[RouterB-e1 1/0/0] quit
# Assign the two physical interfaces to interface Dialer 0.
[RouterB] interface bri0/0/0
[RouterB-bri0/0/0] dialer circular-group 0
[RouterB-bri0/0/0] ppp mp
[RouterB-bri0/0/0] interface serial1/0/0:15
[RouterB-serial1/0/0:15] dialer circular-group 0
[RouterB-serial1/0/0:15] ppp mp
[RouterB-serial1/0/0:15] quit
# Configure C-DCC.
[RouterB] interface dialer0
[RouterB-Dialer0] link-protocol ppp
[RouterB-Dialer0] ppp mp
[RouterB-Dialer0] ip address 22.0.0.2 255.255.255.0
[RouterB-Dialer0] dialer enable-circular
[RouterB-Dialer0] dialer-group 1
[RouterB-Dialer0] dialer route ip 22.0.0.2 7300340
[RouterB-Dialer0] dialer route ip 22.0.0.2 8500560

1.5 Troubleshooting

1.5.1 Troubleshooting of DCC

Fault 1: Modem does not dial when the router forwards the data, so the DCC dialup
connection cannot be set up.
Troubleshooting:
Check whether the modem and phone cable connections are correct, and whether
the modem initialization process is correct.
For the synchronous/asynchronous serial interface, check whether it is configured
to asynchronous and dialing mode.
Check whether DCC has been enabled on the dial interface.
Check whether the corresponding dialer route or dialer number command has
been configured for the packet.
Fault 2: The remote end cannot be pinged after the modem is connected.
3Com Corporation
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Chapter 1 DCC Configuration