Dual Trunk E1 Router

Configuring NAT for single link ISP

Use the following procedure to configure your Dual Trunk E1 Router with dynamic NAT for internet access to a single ISP

 

Table 6-6

Configuring NAT with single link ISP

 

 

 

Procedure

Steps

 

 

 

Setting single link NAT

Example: You were assigned 14 global IP addresses starting from 100.120.30.02 by

ISP to NET1

your ISP for NET1

 

1.Select menu-$JAGlobal Map Table

 

2.Select Translated IP address field.

 

3.Enter 100.120.30.02 as the starting global IP address

 

4.Select subnet mask

 

5.Enter 28.

 

6.Set the interface field to NET1

 

Select the interface on which the network is connected to the ISP.

 

With 4230 Access Router select NET1.

 

With 4240 Dual Link Router select either NET1, NET2, or Bundle0

 

7.Set Action field to Add

 

 

Enter local networks that

1.Select Menu-$JC

require NAT translation

Add a row entry in this table for each network you want enable internet access.

 

2.Select local IP address field of an inactive entry (field set to Delete)

 

3.Enter the IP address that will be translated

 

4.Set subnet mask field of the translated network

 

5.Select interface field

 

6.Select the connection the translated network is connected to.

 

Enet0 for directly attached network

 

NET1, NET2 or Bndl0 for remotely attached network via WAN port.

 

 

Optional - Enable

If you want to share a single global IP address or a range of global IP addresses

overloading

among multiple host.

 

1.Select menu-$JE

 

2.Set NAPT field to Enabled on the global interface (the network interface through

 

which the global networks can be reached, NET1 in this example)

 

 

Enable dynamic NAT

1.Select menu-$JE

 

2.Select unit NAT field and set it to enabled

 

3.Select the global network interface (NET1 in this example) NAT field and set it

 

to Enabled

 

 

Dual Trunk E1 Router User’s Guide

TECHNICAL: 0118 96 56 000

59

Page 71
Image 71
Black Box LRU4240 Configuring NAT for single link ISP, Select menu-$JAGlobal Map Table, Select Menu-$JC, Select menu-$JE