User's Manual Part 2

Release8InstallationandConfigurationGuide
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Issue2,November2007 Draft5forRegulatoryReview 268
Radio Public Network Interface Configuration, DHCP State
This parameter is not configurable when NAT is disabled.
ARP Cache Timeout
If a router upstream has an ARP cache of longer duration (as some use 30 minutes),
enter a value of longer duration than the router ARP cache. The default value of this field
is 20 minutes.
TCP Session Garbage Timeout
Where a large network exists behind the SM, you can set this parameter to lower than
the default value of 1440 minutes (24 hours). This action makes additional resources
available for greater traffic than the default value accommodates.
UDP Session Garbage Timeout
You may adjust this parameter in the range of 1 to 1440 minutes, based on network
performance. The default value of this parameter is 4 minutes.
DHCP Client Enable/Disable
This parameter is not configurable when NAT is disabled.
DHCP Server Enable/Disable
This parameter is not configurable when NAT is disabled.
DHCP Server Lease Timeout
This parameter is not configurable when NAT is disabled.
DNS IP Address
This parameter is not configurable when NAT is disabled.
Preferred DNS IP Address
This parameter is not configurable when NAT is disabled.
Alternate DNS IP Address
This parameter is not configurable when NAT is disabled.
The NAT tab also contains the following buttons.
Save Changes
When you click this button, any changes that you made on all tabs are recorded in flash
memory. However, these changes do not apply until the next reboot of the module.
Reboot
When you click this button
1. the module reboots.
2. any changes that you saved by a click of the Save Changes button are
implemented.
An example of the IP tab in an SM with NAT disabled is displayed in Figure 87.