User's Manual
Table Of Contents
- Vehicle Mounted Modem
- Installation Requirements
- Installing the MEA Vehicle Mounted Modem
- Device Administration: Configuring the VMM Devices
- External Device Provisioning
- Infrastructure Requirements
- License and Warranty Information
- FCC Regulatory Information
MEA VMM User’s Guide
Field Name Field Description Field Default Value
RDATE Server IP
Address
The IP address of the RDATE server. This is
usually the MiSC when operating in
infrastructure mode. The RDATE server
provides the current date to the VMM. The
VMM can operate without an RDATE server.
172.31.0.20
Wired Interface
Address
The VMM will tell the attached Ethernet devices
to use this address for the default gateway, and
the VMM will use the address when accessing
the local Ethernet segment.
MAC-derived
Wired Interface
Subnet Mask
This is the subnet mask for the local Ethernet
segment.
255.255.0.0
DHCP Lease Time This is the duration (in seconds) of the DHCP
leases that the VMM offers to the attached
Ethernet devices.
300
Device Priority The Device Priority provisioning area allows the
operator to set the priority assigned to wireless
messages transmitted by this device.
Levels 0-7 are
available. The
number of priority
levels for your
configuration is set
by the Network
Administrator
Geo Settings The Geo Settings area allows the operator to
enable and disable the Geo Reporting feature
(if provisioned), as well as control the
frequency of reports and provision the
destination server to which those Geo reports
will be sent.
NA
The External Device Provisioning frame of this web page is described in Section 3.2.
A similar screen will be displayed for the access account (the web page will indicate Normal
User Login). Normal users can change only those settings for which they have system
privileges.
3.1.2.1 Device Addressing
With mea Release 3.0, the concept of modes has been replaced by a Unified Modes of
operation addressing scheme. The concept of unified modes of operation centers on the current
state of network communication: Associated State and Unassociated State. There are three
addressing schemes which allow the IT manager increased flexibility in deployment.
3.1.2.2 Network DHCP Scheme
Operation under the Network DHCP scheme is similar to that of Release 2 in Infrastructure
Mode. The primary difference is users are now allowed to temporarily wander outside of the
network infrastructure without losing connectivity.
Network DCHP requires that the VMM device be configured to request an address from a
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