ZyXEL Communications P-2612HNU-Fx Support Notes page 25

In Many-to-Many Overload mode, the CPE maps the multiple ILAs to shared IGA.
4. Many to Many No Overload
In Many-to-Many No Overload mode, the CPE maps each ILA to unique IGA.
Server (DMZ host)
•
In Server mode (DMZ host), the CPE maps multiple inside servers to one global IP
address. This allows us to specify multiple servers of different types behind the NAT
for outside access. Note: If you want to map each server to one unique IGA, please
use the One-to-One mode.
The following table summarizes these types.
NAT Type
One-to-One
Many-to-One
Many-to-Many
Overload
Many-to-Many No
Overload
(Allocate by
Connections)
Server
Port numbers for some services:
•
All contents copyright (c) 2010 ZyXEL Communications Corporation.
Mapping
IP Mapping
Direction
ILA1<--->IGA1 Both
ILA1---->IGA1
ILA2---->IGA1 Outgoing
...
ILA1---->IGA1
ILA2---->IGA2
ILA3---->IGA1 Outgoing
ILA4---->IGA2
...
ILA1---->IGA1
ILA2---->IGA3
ILA3---->IGA2 Outgoing
ILA4---->IGA4
...
Server 1 IP<----IGA1
Incoming
Server 2 IP<----IGA1
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P2612HNU Fx Support Notes