Dial backup, dial-on-demand routing (DDR), and Bandwidth on Demand (BoD) all use the
same basic interface configuration. Dial backup and BoD use the interface backup commands
to determine if, when, and how long an interface is to be activated. DDR is used for a temporary
dial-up connection from a branch or home office.
Time to do some design work: Using Figure 26.10, you’ll design and configure both legacy
and dialer interfaces. For the sake of this project, you’ll assign some addresses to the
interfaces on R2 and R3 in the figure. Add any additional configuration required to complete
the project. The following list of addresses will give you a starting point. Here is a list
of the addresses you’ll use.
R2 - To0 172.16.2.0/24
R3 - E0/0 192.168.252.0/24
ISDN cloud 192.168.254.0/24
Frame cloud 192.168.123.0/24
Frame Relay
ISDN
To0
R2
E0/0
S0/0
R3
BRI0 BRI0/0
ISDN Information
Network diagram
R2 SPID 1 0835866101 DN 8358661
R2 SPID 2 0835866301 DN 8358663
R3 SPID 1 0835866201 DN 8358662
R3 SPID 2 0835866401 DN 8358664
Switchtype is National 1.