3Com 10014299 manual Remote end cannot be pinged after the modem is connected

746CHAPTER 51: CONFIGURING 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

2Configure 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-groupand 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 packet to debug DCC, and locate the problem according to the output information.