Saturday, February 5, 2011

How to perform a local simulation for a remote module in order to configure it before shipment

Simulation is usefull when you are preparing equipments for remote locations. From the management module you can prepare the policy. But then you will need to download it on the remote module. If you can simulate the remote network locally you will find it easier to prepare and troubleshoot configurations.

External interface is ethernet and will be connected to a router

For the simulation you will need to change the configuration of your Internet router. You will assign a secondary interface to the router's ethernet interface. This address is the one of the remote site Internet router.

!
interface Ethernet0
ip address 192.168.10.253 255.255.255.0 secondary
ip address 194.191.78.36 255.255.255.224

By extending the number of secondary addresses you can simulate several remote locations at the same time.

External interface is on serial Interface

You will need to simulate the serial connection locally. That kind of serial connection can be of type Cisco HDLC, Frame Relay or PPP. For the simulation you will need to use a local cisco router with an available serial port

If your external interface is serial 0 on a cisco router, you will configure it in DCE mode. For this use Cisco DCE cable. The fact to have a DCE cable put the cisco serial interface in a DCE mode. Then configure the serial interface to give a clock rate to the connection. The NAP cannot work in a DCE mode itself. The nokia V.35/X.21 cable will be connected to the cisco DCE cable, and bothe connected to their respectiv serial ports. The IP address given to the serial interface of the router is the one of the remote site Internet router.


!
interface Serial0
ip address 194.193.192.254 255.255.255.252
clockrate 64000

No comments: