Motorola WiNG 5.4.2, Справочное руководство системы

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5 - 144 WiNG 5.4.2 Access Point System Reference Guide
8. Select OK to save the changes. Select Reset to revert to the last saved configuration. Select Delete to remove obsolete
rows as needed.
5.2.12.1 Vehicle Mounted Modem (VMM) Deployment Consideration
Mesh Point Configuration
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 2347. For more information on defining radio
settings, see Access Point Radio Configuration .
• Use Opportunistic as the rate selection settings for the AP7161 radio The default is Standard . For more information on
defining this settings, 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-chain-selection
command, or, in the UI (refer Radio Override Configuration .
• Disable A-MPDU Aggregation if the intended vehicular speed is greater than 30 mph. For more information, see Radio
Override Configuration .
Monitor Primary Port Link Select this option to indicate that this mesh point monitors link on the primary port. If the
link on the primary port becomes unavailable, the mesh network is torn down.
Path Method From the drop-down menu, select the method to use for path selection in a mesh network.
The available options are:
• None – Select this to indicate no criteria used in root path selection.
• uniform – Select this to indicate that the path selection method is uniform. When
selected, two paths will be considered equivalent if the average value is the same for
these paths.
• mobile-snr-leaf – Select this if this access point is mounted on a vehicle or a mobile
platform (AP7161 models only). When selected, the path to the route will be selected
based on the
Signal To Noise Ratio (SNR) to the neighbor device.
Preferred Neighbor Enter the MAC address of the mesh point device that is the preferred neighbor.
Preferred Root Enter the MAC address of the mesh point root that is the preferred root.
Preferred Interface From the drop-down menu, select the interface that is the preferred interface for forming
a mesh network.
NOTE: With this release of Motorola Solutions WiNG software, an AP7161 model
access point can be deployed as a Vehicle Mounted Modem (VMM) to provide wireless
network access to a mobile vehicle (car, train, etc.). A VMM provides layer 2 mobility for
connected devices. VMM does not provide layer 3 services, such as IP mobility. For
VMM deployment considerations, see
Vehicle Mounted Modem (VMM) Deployment
Consideration .