Huawei v200r001 user manual II. Configure autodial, III. Configure cyclic use of dialer map

User Manual - Configuration Guide (Volume 3)		Chapter 1
Versatile Routing Platform		DDR Configuration
Table DC-1-32Use Legacy DDR to configure ISDN dedicated line
	Operation	Command
	Configure dial string, according to which DDR	dialer-list dialer-groupprotocol protocol-name{permit
	determines datagram (used in the configuration
		deny list access-list-number}
	mode of the dial interface)
	Enter the configuration mode of the designated ISDN	interface interface-type interface-number
	interface (used in global configuration mode)
	Set the ISDN interface to belong to a dialer group	dialer-group number
	(used in the configuration mode of ISDN interface)
	Set B channel used to connect dedicated lines (used	dialer isdn-leased channel-number
	in the configuration mode of ISDN interface)
	Configure dialer map (used in the configuration mode	dialer map protocol next-hop-address dial-string
	of the dial interface)

II. Configure autodial

Autodial means that when the router has been started, DDR will automatically try to establish dial connection with the remote end, making it unnecessary to trigger datagram. If dial connection fails, DDR will automatically try to establish dial connection at regular intervals. Once the dial connection is established, it won’t disconnect itself due to timeout (i.e. dialer idle-timeout is not functional).

Table DC-1-33Configure autodial

Operation	Command
Enter the configuration mode of the designated dial	interface interface-type interface-number
interface (used in global configuration mode)
Configure dialer map for autodial (used in the	dialer map protocol next-hop-address name hostname
configuration mode of the dial interface)	dialerstring [: isdnsubaddress] autodial
Set autodial interval (used in the configuration mode	dialer autodial-interval seconds
of the dial interface)

Autodial interval is 300 seconds by default.

III. Configure cyclic use of dialer map

In dialer map configuration, the same destination network layer address can be configured with multiple dialer maps, using different dial strings, thus forming dial string backup between them. When DDR is establishing dial connection with the remote end, if the dial string currently used can’t connect the remote end, then, in the next call, the next dialer map and the dial string configured by it will be selected automatically. The configurations are as follows:

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