User Manual - Configuration Guide (Volume 3)
Versatile Routing Platform Chapter 1
DDR Configuration
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VI. Check whether synchronous/asynchronous serial port is correctlyconfigured as asynchronous mode, and whether Modem is configured
The synchronous/asynchronous serial port must be configured first into asynchronous
interface and configured with Modem configuration command, before any DDR
configuration can proceed. If the dial configuration comm and is invisible on
synchronous/asynchronous serial port, a frequent cause is that the
synchronous/asynchronous serial port has not been configured as asynchronous
interface. Now the dial configuration command will be visible, by running the follo wing
two configuration commands under this synchronous/asynchronous seria l port
configuration:
Quidway(config-if-SerialX)# physical-layer async
Quidway(config-if-SerialX)# modem
VII. Check whether synchronous/asynchronous serial port is bound to logicaldial interface or directly enables DDR
The synchronous/asynchronous serial port has to be bound to logical dial interface or
directly enable DDR, then it can be used in dial connection.
The configuration command for synchronous/asynchronous serial port to directly
enable DDR dialer in-band, as shown in the following example (bold-typed):
Quidway(config)# dialer-list 1 protocol ip permit
Quidway(config)# interface serial 0
Quidway(config-if-Serial0)# physical-layer async
Quidway(config-if-Serial0)# modem
Quidway(config-if-Serial0)# ip address 100.1.1.3 255.255.255.0
Quidway(config-if-Serial0)# dialer in-band
Quidway(config-if-Serial0)# dialer-group 1
Quidway(config-if-Serial0)# dialer map ip 100.1.1.1 8810054
The configuration command to bind synchronous/asynchronous serial port to lo gical
dial interface:
The configuration command under Legacy DDR configuration is dialer rotary-group, as
shown in the following example (bold-typed part):
Quidway(config)# dialer-list 1 protocol ip permit
Quidway(config)# interface dialer 0
Quidway(config-if-Dialer0)# ip address 100.1.1.1 255.255.255.0
Quidway(config-if-Dialer0)# dialer in-band
Quidway(config-if-Dialer0)# dialer-group 1
Quidway(config-if-Dialer0)# dialer map ip 100.1.1.2 8810055
Quidway(config-if-Dialer0)# dialer map ip 100.1.1.3 8810048
Quidway(config-if-Dialer0)# interface serial 0