Billion Electric Company 5100S User Manual

 

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NAT supports five types of IP/port mapping. They are: 

1. One to One: In One-to-One mode, the BIPAC 5100S maps one local IP address to one 

global IP address. 

2. Many to One: In Many-to-One mode, the BIPAC 5100S maps multiple local IP addresses to 

one global IP address. This is equivalent to SUA (for instance, PAT, port address translation), 

Billion’s Single User Account feature that previous Billion routers supported (the SUA Only 

option in today’s routers). 

3. Many to Many Overload: In Many-to-Many Overload mode, the BIPAC 5100S maps the 

multiple local IP addresses to shared global IP addresses. 

4. Many-to-Many No Overload: In Many-to-Many No Overload mode, the BIPAC 5100S maps 

each local IP address to a unique global IP address. 

5. Server: This type allows you to specify inside servers of different services behind the NAT to 

be accessible to the outside world. 

The following table summarizes these types. 

One-to-One

ILA1   IGA1 

Many-to-One (SUA/PAT)

 

ILA1   IGA1 

ILA2   IGA1 

… 

Many-to-Many Overload 

ILA1   IGA1 

ILA2   IGA2 

ILA3   IGA1 

ILA4   IGA2 

…