Vehicle Mounted Modem (VMM) Deployment Considerations

Before defining a VMM configuration (mounting an AP7161 mesh point on a moving vehicle), refer to the following deployment guidelines to ensure the configuration is optimally effective:

• Disable layer 2 stateful packet inspection from the firewall policy.
• Set the RTS threshold value to 1 on all mesh devices. The default value is 65,536. For more information on defining radio settings, see Access Point Radio Configuration.
• Use Opportunistic as the rate selection settings for the AP 7161 radio The default is Standard. For more information on defining this setting, see Radio Override Configuration.
• Disable Dynamic Chain Selection (radio setting). The default value is enabled. This setting is disabled from the Command Line Interface (CLI) using the dynamic-chainselection command, or, in the UI (refer to Radio Override Configuration).
• Disable A-MPDU Aggregation if the intended vehicular speed is greater than 30 mph. For more information, see Radio Override Configuration.