3Com 3036, Configuration Manual

Page: 750 / 762

746 C
HAPTER
51: C
ONFIGURING
DCC
[Router-Serial0] dialer route ip 100.1.1.2 8810060 logic-channel 1
[Router-Serial0] logic-channel 1
[Router-logic-channel1] standby interface serial 1
[Router-logic-channel1] interface serial 1
[Router-Serial1] ip address 200.1.1.1 255.255.255.0
[Router-Serial1] link-protocol ppp
2 Configure RouterB:
[Router] dialer-rule 2 ip permit
[Router] interface serial 0
[Router-Serial0] physical-mode async
[Router-Serial0] modem
[Router-Serial0] ip address 100.1.1.2 255.255.255.0
[Router-Serial0] dialer enable-circular
[Router-Serial0] dialer-group 2
[Router-Serial0] dialer route ip 100.1.1.1 8810059 logic-channel 1
[Router-Serial0] logic-channel 1
[Router-logic-channel1] standby interface serial 1
[Router-logic-channel1] interface serial 1
[Router-Serial1] ip address 200.1.1.2 255.255.255.0
[Router-Serial1] link-protocol ppp
Troubleshooting DCC
Modem does not dial when the router forwards the data, so the DCC
dialup connection cannot be set up.
Do the following:
■
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.
The remote end cannot be pinged after the modem is connected.
Do the following:
■
Check whether the same encapsulation 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
have 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 packe
t
to debug DCC, and locate the problem according to the output information.