User guide

149 ExtremeWarePx1 1.2 Command Reference Guide
Commands for Persistence Modes, and NAT Modes
configure nat-mode full
configure nat-mode full
Description
ConÞgures full-NAT mode (full Network Address Translation) on the application switch.
Syntax Description
This command has no parameters.
Default
Full-NAT mode is the default behavior of the application switch.
Usage Guidelines
You must have administrator privileges to issue this command.
In full-NAT mode, the server load balancer translates both the source and destination IP
addressesÑthose of the client and the serverÑbefore sending the request onto the user. For the point of
view of the server fulÞlling the request, it appears as though the client making the request is actually
the server load balancer.
Advantages of full-NAT mode are:
¥ No conÞguration is necessary on the layer 2/3 switch connected to the application switch.
¥ It can be deployed in any network architecture.
¥ Clients can be on the same subnet as the servers.
¥ It allows interoperation with any vendors switch, regardless of support for policy routing.
You must run in full-NAT mode if:
¥ Clients and servers are on the same layer 2 network segment.
¥ The switch connected to the application switch does not support layer 3 policy routing based on
source IP address, port, and protocol.
¥ You do not have access to the layer 3 switch to conÞgure policy based routing.
You must use the build command to commit the conÞguration changes made by this command.
Example
If another NAT mode was in use previously, use the following command to set it back to full:
configure nat-mode full
History
This command was available in ExtremeWarePx 1.1.