nat configuration

[arakesh12345]

                       R1 

                         |

                         |

                         SW1

                             |

                              |

                pc1   pc2

R1 fethernet interface is taken as 192.168.1.1 255.255.255.0  ,,how to another class like class a class b networks

where was am configured ,,please explain this anyone

192.168.1.1 is my lan ip   

if am take another network ,,what is the process nat

what confugurations am made

[azibnaseem]

Hey arakesh12345  '

What I have understand that you want to configure Class A or Class B Network. If you have more interfaces on R1 then you can assign IP Addresses to physical interfaces, if not then please go with Router on A Stick (ROAS) terminology. 

Regards'

[arakesh12345]

i have one fastethernet interface only 

how to router on stick in this fastethernet

please example this configuration  

i take vlan1 only ,,ROAS is multiple vlans how to connect this

[azibnaseem]

Hey arakesh12345  '

Remove IP Address from FastEthernet & Create sub-interfaces for every network & assign IP Address to those sub-interfaces. Example:

R1 Physical Interface fa 0/0:

no ip address

Created Sub-interfaces for R1:

interface fastethernet 0/0.10

encapsulation dot1q 20

ip address 192.168.1.1 255.255.255.0

Note: you can create sub-interfaces as per your requirement.

Step:

Create Vlans on switch & assign respective ports to those vlan's & also make switch port trunk which is connected to R1 Fastethernet.

Regards'

[arakesh12345]

we also use routing protocol like eigrp,ospf instead of ROAS

[azibnaseem]

Hey arakesh12345  

Please share the topology.

Regards'