Chapter 13
Creating a SNAT pool If you decide that you want to use a SNAT pool as the way to specify translation addresses in your SNAT, you must first create the SNAT pool, specifying one or more translation addresses that you want to include in the SNAT pool. You create a SNAT pool using the Configuration utility. For background information on SNAT pools, see Mapping a specific original IP address to a pool of translation addresses, on page 13-3. After creating the SNAT pool, you then create the type of SNAT that best suits your needs (a standard SNAT, an intelligent SNAT, or a SNAT pool that you assign directly to a virtual server). To understand the different types of SNATs that you can create, see Implementing a SNAT, on page 13-6. A SNAT pool has two settings that you must configure when you create it. Table 13.1 lists and describes these settings. Property
Description
Default Value
Name
The unique name of the SNAT pool.
No default value
Member List
The list of IP addresses that you want to include in SNAT pool. If the IP addresses that you add are not already designated as translation addresses, the BIG-IP system automatically designates them as such and assigns them the appropriate properties with their default values. This setting is required.
No default value
Table 13.1 Properties of a SNAT pool
Each translation address that you add to the SNAT pool has settings that you can configure after you add the address to the SNAT pool. For information on these settings, see Specifying a translation address, on page 13-8. Once you create a SNAT pool, you must do one of the following: • Reference the SNAT pool from within a SNAT object that you create. You do this when you create a standard SNAT. For more information, see Creating a standard SNAT, on page 13-6. • Reference the SNAT pool from within an iRule and then assign the iRule to a virtual server as a resource. You do this when you create an intelligent SNAT. For more information, see Creating an intelligent SNAT, on page 13-10. • Assign the SNAT pool directly to a virtual server as a resource. For more information, see Assigning a SNAT pool directly to a virtual server, on page 13-10. Note
SNAT pools cannot reside in partitions. Therefore, a user’s ability to create and manage SNAT pools is defined by their user role, rather than their partition-access assignment. For more information, see the BIG-IP® Network and System Management Guide.
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