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Mesh Enabled Access
3 Device Configuration
3.1
IP Addressing Considerations
The VMM provides network access to one or more IP devices connected to the Ethernet port of
the VMM. In order for the VMM to provide service to the IP devices, some configuration must be
done prior to connecting the IP devices.
The local default gateway address is used only on the wired interface, and is only visible to the
attached IP devices. It is not advertised to the wireless network, and the network cannot access
the VMM using this gateway address. The VMM has another IP address for the wireless
interface that can be used to access the VMM from the network. Because the gateway address
is limited to the local wired interface, the same address could be used for the gateway service in
several VMM devices. The local gateway should be a part of the overall subnet chosen for your
MEA network.
Care must be taken to ensure that the selected IP address is on the same subnet and does not
conflict with any other devices or the chosen Local Gateway service address on the MEA
network.
3.2
Accessing the MEA Device Administration Web Pages
To modify the IP configuration for the VMM using the web interface, you must know the IP
address assigned to the VMM SBC. The mechanism for assigning the IP address is controlled
by the addressing mode of the VMM SBC. Regardless of the mechanism, the assigned IP
address can always be displayed using MeshManager.
If the factory setting is used, then the default addressing mode will be Remote DHCP, and the
VMM SBC IP address will be assigned by the network DHCP server.
If the SBC addressing mode was changed to Statically Provisioned, and an IP address was
entered, then the entered IP address will be used.
If the SBC addressing mode was changed to Statically Provisioned, but no IP address was
entered, then the default SBC IP address will be derived from the transceiver MAC address
(10.xx.yy.1, where the MAC address is 00:05:12:0A:XX:YY), similar to the default IP addresses
described in
External Device
address, and the lowercase xx and yy are the same values in decimal. For example, a VMM
with a transceiver MAC address of 00:05:12:0A:80:20 would have a default SBC IP address of
10.128.32.1.
When the IP address is known, the device web page can be accessed by pointing your web
browser to the IP address of the VMM SBC. For example, if the VMM SBC address is
10.128.32.1, then the web page would be found at http://10.128.32.1/.
3.2.1 Administrator and Access Account Information
The device has two accounts for the web pages - an administrative account, and an access
account. The administrative account must be used for provisioning the device, and the access
account may be used for monitoring the status of the device.
NOTE: If you are running a VMM as a standalone device, the configuration web page can be
reached by connecting a PC to the wired interface. The installation procedure described here
requires administrator access. Alternatively, all of the parameters that are provisioned via the
Provisioning. XX and YY are hex values from the transceiver MAC
7
Vehicle Mounted Modem Users Guide
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