User Manual - Configuration Guide (Volume 3)

Chapter 1

Versatile Routing Platform

DDR Configuration

DDRA link is connecting by this dialer map, waiting this link

DDREnqueue this packet

DDRqueue is fulldiscard the packet

DDRtry to find routing to 100.1.1.2 on interface Serial0

DDRit is an interesting packet

DDRFind a dialer map matching the address

DDRA link is connecting by this dialer map, waiting this link

DDREnqueue this packet

DDRqueue is fulldiscard the packet

%SIMUDIALSerial0 changed state to UP. DDRReceive CALL_CONN_CFM

%interface Serial0 changed state to UP.

DDRlink layer ask the PPP_interface of the interface Serial0 DDRlink layer transfer NAME "" to DDR on interface Serial0 DDRNAME authentication OK

DDRlink negotiation Up on interface Serial0

% Line protocol ip on interface Serial0,changed state to UP.

Information displayed at the call receiving end:

%SIMUDIALSerial0 changed state to UP. DDRReceive CALL_CONN_IND

% interface Serial0 changed state to UP.

DDRlink layer ask the PPP_interface of the interface Serial0 DDRlink layer transfer NAME "" to DDR on interface Serial0 DDRNAME authentication OK

DDRlink negotiation Up on interface Serial0

DDRpeeraddr matching success on interface serial0, link Up.

% Line protocol ip on interface Serial0,changed state to UP.

III.The debugging information displayed when DDR fails to interwork with the opposite end and the solution

This section lists in turn the debugging information when DDR fails to interwork with the opposite end and explains how it is generated. Users may clear the fault by following the attached solutions.

DDR: Receive CALL_DISC_IND

This debugging information may be generated by the following causes:

a. The physical connection between local end and remote end is cut off, poor connection between telephone line and router, and poor telephone line quality.b. Incorrect PPP authentication configuration, PPP authentication fails to pass.

c. The remote DDR authentication fails to pass, the name (dialer remote-name, name in dialer map) configured by DDR is inconsistent with the name configured in PPP authentication configuration, there is no local network layer address in the remote dialer map.

d. It is not a fault, while the problem is caused when the remote DDR idle-timeout timer is timeout, the opposite end hooks on this connection.

The solutions are as follows:

a. For incorrect PPP configuration, please configure according to the example above.

b. If the names are configured inconsistently, please configure according to the example above.

c. For the problem of “Network layer address”, please take one of the following solutions in the configuration of the opposite end:

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Huawei v200r001 user manual Information displayed at the call receiving end