
Chapter 4: Configuring the High-Level Network
4-134
The following example shows a NAT definition:
b nat 10.10.10.10 to 10.12.10.10
To delete NATs
Use the following syntax to delete one or more NATs from the system:
b nat <orig_addr> [...<orig_addr>] delete
To display status of NATs
Use the following command to display the status of all NATs included in the
configuration:
b nat show
Use the following syntax to display the status of one or more selected NATs
(see Figure 4.50).
b nat <orig_addr> [...<orig_addr>] show
To reset statistics for a NAT
Use the following command to reset the statistics for an individual NAT:
b nat [<orig_addr>] stats reset
Use the following command to reset the statistics for all NATs:
b nat stats reset
Disabling SNATs and NATs for a pool
When configuring a pool, you can specifically disable any SNAT or NAT
connections that use that pool. By default, this setting is enabled. For
information on how to disable SNAT and NAT connections for a pool, see
Disabling SNAT and NAT connections, on page 4-45.
Disabling ARP requests
By default, the BIG-IP responds to ARP requests for the NAT address and
sends a gratuitous ARP request for router table update. If you want to
disable the NAT address for ARP requests, you must specify arp disable.
Additional restrictions
The nat command has the following additional restrictions:
• The IP address defined in the <orig_addr> parameter must be routable
to a specific server behind the BIG-IP.
NAT { 10.10.10.3 to 9.9.9.9 }
(pckts,bits) in = (0, 0), out = (0, 0)
NAT { 10.10.10.4 to 12.12.12.12
netmask 255.255.255.0 broadcast 12.12.12.255 }
(pckts,bits) in = (0, 0), out = (0, 0)
Figure 4.50 Output when you display the status of a NAT
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