Cisco Systems 78-11741-02 manual Creating a Network from Separated Subnets Example, IPC-50

Configuring IP Addressing

IP Addressing Examples

•Changing the Rate for Triggering SVCs Example

•Applying NHRP Rates to Specific Destinations Example

•NHRP on a Multipoint Tunnel Example

•Broadcasting Examples

•NAT Configuration Examples

•ping Command Example

Creating a Network from Separated Subnets Example

In the following example, subnets 1 and 2 of network 131.108.0.0 are separated by a backbone, as shown in Figure 8. The two networks are brought into the same logical network through the use of secondary addresses.

Figure 8 Creating a Network from Separated Subnets

Network 192.5.10.0

Subnet 172.16.3.0

Router B

E2

Subnet 172.16.1.0

Router A

Router C

E1

Subnet 172.16.2.0

Router D

S1016a

The following examples show the configurations for routers B and C:

Router B Configuration

interface ethernet 2

ip address 192.5.10.1 255.255.255.0

ip address 131.108.3.1 255.255.255.0 secondary

Router C Configuration

interface ethernet 1

ip address 192.5.10.2 255.255.255.0

ip address 131.108.3.2 255.255.255.0 secondary

Serial Interfaces Configuration Example

In the following example, the second serial interface (serial 1) is given the address of Ethernet interface 0. The serial interface is unnumbered.

interface ethernet 0

Cisco IOS IP Configuration Guide

IPC-50