Information Technology Reference
In-Depth Information
Goleta:
ip route 10.1.1.0 255.255.255.0 172.16.20.1
Example 2:
Dial is the only connection, with unnumbered interfaces, as shown in Figure 16-6. This can be
configured with just one route, but it is common to configure two routes: a host route to the LAN
interface on the remote router, and a route to the remote LAN via the remote LAN interface. This is done
to prevent mapping problems from Layer 3 to Layer 2, which can result in encapsulation failures.
This method is also used if the dialer interfaces on the two devices are numbered, but not in the same
network or subnet.
Figure16-6 Dial Using Unnumbered Interfaces
E0
E0
BRI0
192.168.10.1 /24
BRI0
192.168.254.1
192.168.254.2
Montecito
Goleta
Montecito:
ip route 192.168.10.0 255.255.255.0 192.168.10.1
ip route 192.168.10.1 255.255.255.255 BRI0
Goleta:
ip route 10.1.1.0 255.255.255.0 10.1.1.1
ip route 10.1.1.1 255.255.255.255 BRI0
Example 3:
Dial is a backup connection, using numbered interfaces, as shown in Figure 16-7. One floating static
route is required.
Figure16-7 Backup Using Numbered Interfaces
ISDN
172.16.20.1 /24
172.16.20.2 /24
B0
B0
E0
E0
10.1.1.1 /24
192.168.10.1 /24
Frame Relay
S0
S0
Montecito
Goleta
192.168.154.1
192.168.154.2
Montecito:
ip route 192.168.10.0 255.255.255.0 172.16.20.2 200
Goleta:
