Information Technology Reference
In-Depth Information
Figure16-9 Typical Dialer Profiles Application
Network 3
Network 4
Network 5
Network 6
Network 7
Network 8
Router B is on
subnetwork 1.1.1.0.
Networks 3, 4, and 5
are reached through it.
Router C is on
subnetwork 2.2.2.0
Networks 6, 7, and 8
are reached through it
Dialer interface for subnetwork 1.1.1.0
and all networks reached through it.
Dialer interface for subnetwork 2.2.2.0
and all networks reached through it.
A dialer interface uses only one dialer pool. A physical interface, however, can be a member of one or
many dialer pools, and a dialer pool can have several physical interfaces as members.
Figure 16-10 illustrates the relationships among the concepts of dialer interface, dialer pool, and
physical interfaces. Dialer interface 0 uses dialer pool 2. Physical interface BRI 1 belongs to dialer pool
2 and has a specific priority in the pool. Physical interface BRI 2 also belongs to dialer pool 2. Because
contention is resolved on the basis of priority levels of the physical interfaces in the pool, BRI 1 and BRI
2 must be assigned different priorities in the pool. Perhaps BRI 1 is assigned priority 100, and BRI 2 is
assigned priority 50 in dialer pool 2 (a priority of 50 is higher than a priority of 100). BRI 2 has a higher
priority in the pool, and its calls will be placed first.
Figure16-10Relationships Among Dialer Interfaces, Dialer Pools, and Physical Interfaces
Dialer interface 0
Dialer interface 1
Dialer interface 2
Dialer Pool 2
Dialer Pool 3
Dialer Pool 1
BRI 0
BRI 1
BRI 2
BRI 3
Dialer profile configuration steps:
Step
Purpose
Command
1
Create a dialer interface
interface dialer number
2
Specify the IP address and mask of
the dialer interface as a node in the
destination network to be called
ip address
address mask
3
Specify PPP encapsulation
encapsulation ppp
