Creating NAT Pools
Use the Create NAT Pools page to create NAT pools.
To create a NAT pool:
- Select Configuration > NAT > Pools.
The NAT Pools page appears.
- Click the add icon (+).
The Create NAT Pool page displays fields required for creating and configuring a NAT pool.
- Complete the configuration according to the guidelines provided in Table 1.
- Click OK to save the changes. A NAT pool with
the configuration you provided is created.
If you want to discard your changes, click Cancel instead.
Table 1 provides guidelines on using the fields on the Create NAT Pool page.
Table 1: Fields on the Create NAT Pool Page
Enter a unique string of alphanumeric characters, dashes, and underscores. Colons, and periods are not allowed, and the maximum length is 31 characters.
Enter a description for the new NAT pool; maximum length is 1024 characters.
Select a NAT pool type to configure:
Select a NAT pool address or click Add new address to create a new NAT pool address.
Select the site to which the NAT pool is applicable.
Note: In a hub and spoke topology, both hub and spoke sites are listed in the Site drop-down. Ensure that you select only a spoke site, when you are creating a destination NAT pool.
Select the required routing instance from the list of available routing instances for the selected site.
Host Address Base
Enter the base address of the original source IP address range. The Host Address Base is used for IP address shifting.
Select the translation type for the incoming traffic:
Select a NAT address pooling behavior:
Enter the port number for the destination NAT pool type.
Enter the start port range for the source NAT pools, if the translation type is Port/Range. The value of the port range can be any value between 1024 to 65535.
Enter the end port range. The value of the port range can be any value between 1024 to 65535.
Port Overloading Factor
Configure the port overloading capacity for a source NAT pool. If the factor is set to x, each translated IP address has x times the maximum number of ports available. The value of the port overloading factor can range between 2 and 32.
Enable address sharing so that multiple internal IP addresses can be mapped to the same external IP address. Select this option only when the source NAT pool is configured with no port translation. When a source NAT pool has only one or a few external IP addresses available, the address sharing option with a many-to-one address mapping increases NAT resources and improves traffic.
Overflow Pool Type
Select a source pool to use when the current address pool is exhausted.