User Manual - Configuration Guide (Volume 3)
Versatile Routing Platform Chapter 1
DDR Configuration
1-5
To configure a Dialer Rotary Group, follow the steps below:
Step 1: create a logic dial interface.
Please use the following command in global configuration mode.
Table DC-1-4 Create a logic dial interface
Operation Command
Create a logic dial interface interface dialer number
In the command, number is both the interface number of the logic d ial interface and the
identification number of Dialer Rotary Group. That is to say, when a logic dial interface
is created, a Dialer Rotary Group is also specified for this interface.
Step 2: enable DDR.
Please use this command in the configuration mode of the logic dial int erface.
For the command format, please refer to Step 1 of “Call to a single point”.
Step 3: designate multiple destinations for this Dialer Rotary Group.
Please use this command in the configuration mode of the dial interfac e.
Table DC-1-5 Set different dial strings for different destinations
Operation Command
Set different dial strings for different
destinations dialer map protocol next-hop-address Dialstring [:
isdnsubaddress]
Step 4: put the physical interface into Dialer Rotary Group.
Table DC-1-6 Put the designated physical interface into Dialer Rotary Group.
Operation Command
Enter the configuration mode of the designated physical interface
(used in global configuration mode) interface interface-type interface-number
Put the physical interface into Dialer Rotary Group (used in the
configuration mode of the designated physical interface) dialer rotary-group number
The physical interface in Dialer Rotary Group doesn’t use its own IP address—in
application, it will inherit the IP address of the logic dial interface. The parameter
number in the command dialer rotary-group number in the co nfiguration mode of the
physical interface should be the same as the number in the comm and int erf ace dialer
number in the configuration mode of the logic interface corresponding to the physical
interface.
In addition, an ISDN interface (BRI or PRI) itself can be regarded as Dialer Rotar y
Group of its subordinate B channel. Meanwhile, it can serve as a phys ical int erf ace in
other Dialer Rotary Groups.
Following is the schematic diagram of Dialer Rotary Group.