User manual

SM User Manual January 2004
Software Release 4.1
8.4 NAT CONFIGURATION PAGE
An example of an NAT Configuration screen is displayed in
• Figure 44 on Page 99 for the NAT Disabled implementation.
• Figure 45 on Page 101 for the NAT with DHCP Client and DHCP Server
implementation.
• Figure 46 on Page 102 for the NAT with DHCP Client implementation.
• Figure 47 on Page 103 for the NAT with DHCP Server implementation.
• Figure 48 on Page 104 for the NAT without DHCP implementation.
The set of parameters that the NAT Configuration page provides depends on whether NAT
(network address translation) is enabled. The default state of this page is with NAT disabled.
8.4.1 NAT Configuration Parameters with NAT Disabled
When NAT (network address translation) is disabled, the NAT Configuration page provides the
following parameters:
Figure 44: NAT Configuration screen, NAT disabled
ARP Cache Timeout
If a router upstream has an ARP cache of longer duration (as some use 30 minutes), then the
operator enters a value of longer duration than the router ARP cache. The default value of this field
is 20 seconds.
NAT Enable/Disable
The operator either disables NAT, or enables NAT to view additional options.
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