Verizon MiFi U620L Guía de configuración rápida

MIU620L-IG001

MiFi 4G LTE Global

USB Modem U620L

Linux Integration Guide

Version 1.0 July10, 2015

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iii

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Contents

Introduction 1

Overview 2

Prerequisites 3

Known Issues 4

End User Mode 5

Enumerating CDC-ECMInterface 6

Enterprise Mode 7

Enumerating CDC-ECM + Modem Interfaces 8

Introduction

Overview

Prerequisites

Known Issues

Overview

The MiFi U620L implements the Remote Network Driver Interface Specification (RNDIS) network

interface based on Microsoft RNDIS 6.0. Although this integration may not be supported in the Linux

environment, the MiFi U620L does support Linux configurations.

This guide outlines the basic information needed to successfully integrate the MiFi U620L into a Linux

platform. The two main sections in the guide are:

lEnd-User Mode: Enumerating CDC-ECM interface

In this mode, the device is used for a WWAN connection to the Internet for such activities as

browsing or connecting to a VPN.

lEnterprise Mode: Enumerating CDC-ECM and Modem interfaces (Optional)

In this mode, the Modem interface allows users to send AT commands to the device to

configure, query, or manage the Internet connection.

NOTE: The information included in this guide is based on Ubuntu running a Kernel version 3.16.0-

30.generic and these instructions can be extended to other kernel versions with no or minimum

changes (as appropriate).

U620L Linux Integration Guide 2

U620L Linux Integration Guide 3

Prerequisites

The following items are prerequisites for the Linux integrations:

lusb_modeswitch—Utility used for switching USB configurations. This utility should be installed

on the Linux machine.

NOTE: An Internet connection is required for this installation.

To install the utility:

4Enter the following command:

# sudo apt-get install usb_modeswitch

lLinux Kernel source files—Files required to enable the MiFi U620Lto enumerate the Modem

interface. Download the files from this site: https://www.kernel.org/.

Known Issues

The usb_modeswitch utility has crashed on some Linux distributions presenting the following error

message.

Despite receiving this message, the Ethernet Interface gets enumerated correctly and the laptop gets an

IP address from the device. This is a tool-related issue and you can safely ignore this error.

U620L Linux Integration Guide 4

End User Mode

Enumerating CDC-ECM Interface

Enumerating CDC-ECMInterface

By default, the MiFi U620L device is in End-User Mode. This means that only the RNDIS configuration is

exposed. For the device to get a WWAN IPAddress assignment, you must switch the configuration to

CDC-ECM.

To switch the configuration and initiate the DHCPrequest:

1. Verify that your device is in End-User Mode by issuing the following command:

# lsusb

If the device is in End-User Mode, the response is:

ID 1410:9020 Novatel Wireless

2. If the device is in End-User Mode, uninstall the RNDISdriver by issuing the following command:

# sudo rmmod rndis_host

3. Switch the device to CDC-ECM configuration by issuing the following command:

# sudo usb_modeswitch –v 0x1410 –p 0x9020 –u 2

Once these steps are complete, the CDC-ECM interface is enabled on the device and the device

expects a DHCP Request from the Linux server.

4. Initiate the DHCP Request to the U620L to get the WWAN IP Addresses assigned to Linux by

issuing the following command:

# sudo dhclient eth1

NOTE: Replace eth1 with the appropriate Ethernet interface enumeration on your setup.

U620L Linux Integration Guide 6

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