Manuel d'utilisation / d'entretien du produit Ethernet du fabricant Lantronix
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WiBox2100E User Guide Part Number 900-351 Revision F June 2006.
WiBox2100E User Guide 2 Copyright and Trademark © 2005, 2006 Lantronix. All rights reserved. No part of the content s of this book may be transmitted or reprodu ced in any form or by any means without the written permission of Lantronix. Printed in the United States of America.
WiBox2100E User Guide 3 Contents List of Tables ___________________________________________________________6 List of Figures __________________________________________________________7 1: Using This G.
Contents WiBox2100E User Guide 4 Server Configuration ____________________________________________________30 Hostlist Configuration ___________________________________________________32 Channel 1 and .
Contents WiBox2100E User Guide 5 Send Characters _______________________________________________________63 Telnet Terminal Type____________________________________________________63 Channel (Port) Pas.
Contents WiBox2100E User Guide 6 Obtaining Firmware _____________________________________________________77 Reloading Firmware ____________________________________________________77 Using TFTP: Graphi.
Contents WiBox2100E User Guide 7 List of Figures Figure 2-1. Serial Tunneling Infrastructu re Network Example _________________________ 11 Figure 2-2. Ad Hoc Network Example ___________________________________________ 12 Figure 2-3. Serial Tunneling Infrastructure Example ________________________________ 12 Figure 2-4.
WiBox2100E User Guide 8 1 1 : : U U s s i i n n g g T T h h i i s s G G u u i i d d e e Purpose and Audience This guide provides the informatio n needed to configure, use, and update the WiBox. It is for network administrat ors, system integrators, and those resp onsible for installing and maintaining the WiBox210 0E.
Using This Guide WiBox2100E User Guide 9 Additional Documentation The following guides are av ailable on the product CD and the Lantronix web site ( www.
WiBox2100E User Guide 10 2 2 : : I I n n t t r r o o d d u u c c t t i i o o n n The WiBox™ family of wireless device se rvers provides serial -to-wirele ss network connectivity. They enable virtually any se rial device or equipment to be remotely accessed, controlled, monitored, or shared on an 802.
Introduction WiBox2100E User Guide 11 Telecommunications equip ment Data display devices Virtually any RS-232, RS -422 or RS-485 asynchrono us serial device Application Examples The WiBox has two serial ports and an 802.11b/g transceiver. Each serial po rt is connected to the serial communi cation port of a device.
Introduction WiBox2100E User Guide 12 Ad Hoc Network Figure 2-2. Ad Hoc Netw ork Example In the example above, the AP is not present. The PC makes a dire ct wireless connection with the WiBox to manage se rial devices. Without an AP, it is a peer-to- peer relationship.
Introduction WiBox2100E User Guide 13 Ad Hoc WiBox Connection Figure 2-4. Direct WiBox to WiBox Connection In the example above, two WiBoxes have established an Ad Hoc p eer-to-peer relationship. They communicate di rectly to each other’s serial devices without a PC or an AP.
Introduction WiBox2100E User Guide 14 DeviceInstaller: This utility provides a GUI interface for assigning t he IP address, viewing the current configuration, and updat ing firm ware. To use DeviceInstaller for communication to a WiBox over a wirel ess network, the WLAN network settings must be configured first.
Introduction WiBox2100E User Guide 15 Serial Connector Pinouts The two DB9M DTE serial ports p rovide default settings for RS-232C communications of 9600 b aud, 8 bits, no parity, and 1 stop bit (9600, 8, N, 1).
Introduction WiBox2100E User Guide 16 Figure 2-7. RS-485 2-Wire Pinouts WBX2100E Network Interface The back panel of the WBX2100E contai ns a 9-30V DC power plug and an RJ45 (10/100) Ethernet port.
Introduction WiBox2100E User Guide 17 Ethernet Connector Pinouts Figure 2-9 . RJ45 Ethernet Connector LEDs Table 2-1. WiBox LEDs LEDs Meaning Power LED: Green, steady on Power is on Wireless Link LED:.
Introduction WiBox2100E User Guide 18 Technical Specifications Table 2-2. WiBox Technical Sp ecifications CPU, Memory Lantronix DSTni-E X 186 CPU 256 KB zero wait state SRAM 2048 KB Flash Serial Interface Rate is software selectable (300 bps to 921600 bps) Network Interface Wireless 802.
WiBox2100E User Guide 19 3 3 : : Q Q u u i i c c k k S S t t a a r r t t This chapter describe s installation procedures for the WiBox units. Required Information Hardware Address Take note of the unit’s hardware addre ss (also known as MAC address).
Quick Start WiBox2100E User Guide 20 WLAN SSID: _______________ _ (case-sensitive) WEP Enabled Y/N? _______ WEP Key 64 bit or 128 bit? _______ WEP Key: ___________________ _________ (Entered in HEX fo.
Quick Start WiBox2100E User Guide 21 Two settings are required f or the WiBox to communicate on a wireless network: The Server (0) settings The WLAN (4) settings Current s ettings display in pa rentheses. Note: Due to regulation s, the country-specific setting has b een rem oved from the setup menu and Web-M an ager.
Quick Start WiBox2100E User Guide 22 b) Topology: Select Infrastr ucture (ESS) mode or AdHoc (IBSS). Infrastructure mode communicates with Access Points. Ad Hoc mode communicates only with ot her clients. Topology 0=Infrastructure, 1=AdHoc (0) ? c) Net work Name (SSID): Enter the name of the network to which the WiBox will connect.
Quick Start WiBox2100E User Guide 23 Note: Lantronix recom mends using a passph rase of 20 characters or more for maximum security. g) WPA: This firmware version allows only Pre-Shared Keys (PSK) for authentication and encryption. Topolog y must be set to Infrastructure for the WPA option to display.
Quick Start WiBox2100E User Guide 24 a) Click the Start button on the Task Bar and select Run . b) Enter your CD drive letter, colon, backslash, dev iceinstaller.exe (e.g., E:deviceinstaller.exe ). 2. Click the DeviceInstaller button. The installation wizard window displays.
Quick Start WiBox2100E User Guide 25 WebPort Displays the WiBox’s port for Web-Manager configuratio n. Maximum Baud Rate Supported Displays the WiBox’s maxim um baud rate.
Quick Start WiBox2100E User Guide 26 Supports HTTP Server Displays True if the WiBox supports HTT P server. Supports HTTP Setup Displays True if the WiBox supports HTT P setup. Supports 230K Baudrate Displays True if the WiBox supports a baud rate of 230K.
WiBox2100E User Guide 27 4 4 : : W W e e b b - - M M a a n n a a g g e e r r C C o o n n f f i i g g u u r r a a t t i i o o n n This chapter describe s how to configur e the WiBox using Web-M anager, Lantronix’s browser-based configuratio n tool. The unit ’s configuration is stored i n nonvolatile memory and is retained without power.
Web-M anager Conf iguration WiBox2100E User Guide 28 Figure 4-1. Web-Mana ger The main menu is on the left panel of the Web-Manager wi ndow. Network Configuration Select Network from the main menu to displa y the unit's network values. The following sections descri be the configurable network param eters.
Web-M anager Conf iguration WiBox2100E User Guide 29 Figure 4-2. Netw o rk Settings Automatic IP Address Configuration To automatically assign an IP addres s and its network configuration: 1. Click Network from the main menu. 2. Select Obtain IP address automatically .
Web-M anager Conf iguration WiBox2100E User Guide 30 5. On the main menu, click Apply Settings . Static IP Address Configuration To manually assign an IP address and its net work configuration: 1. Click Network from the main menu. 2. Select Use the follo wing IP configuration .
Web-M anager Conf iguration WiBox2100E User Guide 31 Figure 4-3. Server Settings To configure the WiBox’s device serv er settings: 1. Click Server from the main menu. 2. Configure or modify the following fields: Server Configuration Telnet Password Enter the password required for T elnet access.
Web-M anager Conf iguration WiBox2100E User Guide 32 CPU Performance Mode Select the WiPort’s performance mode. Higher performance settings require more energy. Low is 26 Mhz. Regular is 48 Mhz; High is 88 Mhz. The default is Regular . HTTP Server Port This option allows the configur ation of the web server port number.
Web-M anager Conf iguration WiBox2100E User Guide 33 Retry Settings Retry Counter Enter the value for the number of times the WiBox should attempt to retry connecting to the hostlist. The default setting is 3 . Retry Timeout Enter the duration (in seconds ) the WiBox should abandon attempting a connection to the hostlist.
Web-M anager Conf iguration WiBox2100E User Guide 34 Figure 4-5. Channel Se rial Settings 2. In the available fields, enter the following information: Channel Disable Serial Port Available on Channel 2 settings only. When selected, disables communication through the serial p ort.
Web-M anager Conf iguration WiBox2100E User Guide 35 Baud Rate The unit and attached ser ial device, such as a modem, must agree on a speed or baud rate to use for the serial c onnection. Valid baud rates are 300, 600, 1200, 2400, 4800, 9600 (default), 19200, 38400, 57600, 115200, 23 0400, 460800, or 921600.
Web-M anager Conf iguration WiBox2100E User Guide 36 At Time of Disconnec t Select Yes to clear the input buffer when the network connection to or from the dev ice is disconnected.
Web-M anager Conf iguration WiBox2100E User Guide 37 Figure 4-6. TCP Connec tion Settings Connect Mode: Passive Connection Accept Inc oming Select Yes to accept incoming connections. Password Required Determines whether a password is requ ired for an incoming passive connection.
Web-M anager Conf iguration WiBox2100E User Guide 38 character is received from the serial port. With Active Mdm Ctrl In: Accepts external connection requests only when the modem_control_in input is asserted. With Start Character: Attempts to connect when it receives a specific start character from the serial port.
Web-M anager Conf iguration WiBox2100E User Guide 39 Mode. The unit will not acc ept a data connection from a remote device when the hostlist option is e nabled. LED Select Blink for the status LEDs to blink upon connection or None for no LED output. The default setting is Blink .
Web-M anager Conf iguration WiBox2100E User Guide 40 Figure 4-7. UDP Connection Settings 2. In the available fields, enter the following information: Datagram Mode Datagram Type Configures re mote IP or network broadcast address and the remote port. Enter 01 for directed or broadcast UDP.
Web-M anager Conf iguration WiBox2100E User Guide 41 Remote Host Enter the IP address of the remote device. Device A ddress Table This table is enabled when Datagra m Type is set to FD . Enter values in the range 1-255 to id entify units on the local network of device servers.
Web-M anager Conf iguration WiBox2100E User Guide 42 Figure 4-8. WLA N Settings 2. Enter or modify the following fields: Network Interface Use the pull-down menu to select a WLAN interface. Wireless Network Configuration Network Name Enter the name of the wireless net work (SSID).
Web-M anager Conf iguration WiBox2100E User Guide 43 WEP Options Authentication Select an authentication scheme ( Open/None or Shared ) from the drop down menu. Encryption Select the encryption type ( 64 bits or 128 bits for WEP) fro m the pull-down menu.
Web-M anager Conf iguration WiBox2100E User Guide 44 Updating Settings 1. If you have not already done so, click the Apply Settings button from the main menu to save and apply the configuration cha nges.
WiBox2100E User Guide 45 5 5 : : T T e e l l n n e e t t o o r r S S e e r r i i a a l l P P o o r r t t ( ( S S e e t t u u p p M M o o d d e e ) ) C C o o n n f f i i g g u u r r a a t t i i o o n n You must configure the unit so that it can communicate on a network with your serial device.
Telnet or Serial Port (Setup Mode) Configuration WiBox2100E User Guide 46 Figure 5-1. MAC A ddress 3. To enter Setup Mode, press Enter within 5 seconds .
WiBox2100E User Guide 47 6 6 : : S S e e t t u u p p M M o o d d e e : : S S e e r r v v e e r r C C o o n n f f i i g g u u r r a a t t i i o o n n This chapter explains how to configure the network settings. Note: Current values display in parenth eses.
Setup Mode: Server Configuration WiBox2100E User Guide 48 For example, if the third octet is 0.0.5.0, the AutoIP and BootP options are disabled; only DHCP is enabled. (The value 5 results from addi ng the binary equivalents of 0 and 2.) This is the most common setting when u sing DHCP.
Setup Mode: Server Configuration WiBox2100E User Guide 49 DHCP Name If a DHCP server has automatically assi gned the IP addre ss and network settings, you can discover the unit by using the De viceInstaller network sear ch feature or Monitor Mode (see 9: Monitor Mode ) .
WiBox2100E User Guide 50 7 7 : : S S e e t t u u p p M M o o d d e e : : C C h h a a n n n n e e l l C C o o n n f f i i g g u u r r a a t t i i o o n n This chapter explains how to configu re the serial port. Notes: Current v alues display in pa renthesis.
Setup Mode: Channel Configuration WiBox2100E User Guide 51 I/F (Interface) Mode The Interface (I/F) Mode is a bit-coded byte entered in hexadecimal notation.
Setup Mode: Channel Configuration WiBox2100E User Guide 52 Flow (00) ? _ Use the following table to select flow control option s: Table 7-3. Flo w Control Options Flow Control Option Hex No flow contr.
Setup Mode: Channel Configuration WiBox2100E User Guide 53 Note: All bit positions in the table that ar e blank represent “don’ t care” bits for that particular option; they can be set to either a 0 or 1 value.
Setup Mode: Channel Configuration WiBox2100E User Guide 54 a) Incoming Connection Never A ccept Incoming Rejects all e xternal connection attempts. Accept with DTR Active Accepts external connection requ ests only when the DTR input is asserted. Cannot be used with Modem Mode.
Setup Mode: Channel Configuration WiBox2100E User Guide 55 Manual Connection Attempts to connect when directed by a command string received from the serial port. The first chara cter of the command string must be a C (ASCII 0x43), and the last character must be either a carriage return (ASCII 0x0D) or a line feed (0x0A).
Setup Mode: Channel Configuration WiBox2100E User Guide 56 Autostart (Automatic Connection) If you enable Autostart , the unit automatically connects to the remote IP address and remote port specified w hen the firmware starts.
Setup Mode: Channel Configuration WiBox2100E User Guide 57 4. For Retrycounter , enter the number of times the WiBox shoul d try to make a good network connection to a hostlist entry that it has successfully ARPed. The range is 1-15, with the default set to 3 .
Setup Mode: Channel Configuration WiBox2100E User Guide 58 Table 4-11. Modem Mod e Mess ages Message Meaning Full Verbose OK Command was executed w ithout error. CONNECT A network connection has been established. NO CARRIER A network connection has been clos ed.
Setup Mode: Channel Configuration WiBox2100E User Guide 59 If this sequence is not followed, t he unit remains in dat a transfer mode. 7-6. Modem Mode Commands Modem Mode Command Function ATDTx.x.x. x,pppp or ATDTx.x.x. x/pppp Makes a connection to an IP address (x.
Setup Mode: Channel Configuration WiBox2100E User Guide 60 Remote IP Address This is the destination IP addres s used with an outgo ing connection. Remote IP Address : (000) (000) (000) (000)_ Note: This option does not displ ay when Hostlist is enabled from the ConnectMode prom pt (see Connect Mo de on page 52 for more information).
Setup Mode: Channel Configuration WiBox2100E User Guide 61 (3) The TCP connection closes even if the remote site does not acknowledge the disconnection. (4) When there is a network connection to or from t he se rial port, the state LED turns off instead of blinking.
Setup Mode: Channel Configuration WiBox2100E User Guide 62 Table 7-9. Pack Control Op tio ns Option 7 6 5 4 3 2 1 0 Packing Interval Interval: 12 msec 0 0 Interval: 52 msec 0 1 Interval: 250 msec 1 0 .
Setup Mode: Channel Configuration WiBox2100E User Guide 63 DisConnTime (00:00) ?: To disable the inactivity timeout, enter 00:00 . Range is 0 (disabled) to 5999 secon ds (99 minutes, 59 second s). The default setting is 0 . Send Characters Enter up to two characters in hexadecimal repre sentation in sendchar.
Setup Mode: Channel Configuration WiBox2100E User Guide 64 Topology 0=Infrastructure, 1=Adhoc (0) ? _ Network Name (SSID) Enter the name of the network to which the WiBox will conn ect.
Setup Mode: Channel Configuration WiBox2100E User Guide 65 Note: Lantronix recom mends using a passph rase of 20 characters or m ore for max imum sec urity.
Setup Mode: Channel Configuration WiBox2100E User Guide 66 Enable Power Management This allows the software to turn off the radio when exp ecting not to receive or transmit soon. This feature redu ces t he power consumption by up to 170 mA. Enabling power management increase s the response time, because the radio ne eds to start up again.
WiBox2100E User Guide 67 8 8 : : S S e e t t u u p p M M o o d d e e : : A A d d v v a a n n c c e e d d S S e e t t t t i i n n g g s s Expert Settings (Option 5) Note: You can change the se settings using Telnet or serial conne ctions only, not Web-Manager.
Setup Mode: Advanced Settings WiBox2100E User Guide 68 ARP Cache timeout in seconds Whenever the unit communicate s with another device on the network, it adds an entry into its ARP table. The ARP Cache timeout option allows you to define ho w many seconds (1-600) the unit will wait bef ore timing out this table.
Setup Mode: Advanced Settings WiBox2100E User Guide 69 Ethernet Connection Type The WiBox allows for the Ethernet spe ed and dupl ex to be manually configured.
Setup Mode: Advanced Settings WiBox2100E User Guide 70 Disable Port 77FE (Hex) Note: Disabling both Telnet Setup and Port 77FE and Web Setup prevent s users from accessing the setup from the network. Port 77FE is used by Web-Manage r and cu stom programs to configure the unit remotely.
Setup Mode: Advanced Settings WiBox2100E User Guide 71 To configure AES encryption on the WiBo x: Figure 8-2. Encryption Keys 1. When prompted to enabl e encryption, select Y . 2. Enter the encryption key length when pr ompted. The WiBox supports 128-, 192-, and 256-bit encryption key lengths.
Setup Mode: Advanced Settings WiBox2100E User Guide 72 Default Settings Select 7 Default Settings from the Chan ge Setup menu to reset the unit’s Channel 1 configuration, Channel 2 configuration, Security, and Expert settings to the factory default settings.
Setup Mode: Advanced Settings WiBox2100E User Guide 73 Channel 11 Security 0 (non e) TX Data Rate 1 (auto) TX Data Rate 11 Mbps Enable Power Management N (No) Expert Settings TCP Keepalive 45 (seconds.
Setup Mode: Advanced Settings WiBox2100E User Guide 74 Exit Configuration Mode To exit Setup Mode, do one of the following: To save all changes and reboot the device, sel ect option 9 Save and exit from the Change Setup menu.
WiBox2100E User Guide 75 9 9 : : M M o o n n i i t t o o r r M M o o d d e e Monitor Mode is a command-line inte rface used for diagnostic pu rposes. There are two ways to enter Monitor Mode: locally via the serial port or remot ely via the network. Entering Monitor Mode via the Serial Port To enter Monitor Mode locally : 1.
Monitor Mode WiBox2100E User Guide 76 Command Command Name Function SC Send Configuration Sets configur at ion of unit from hex records. PI x.x.x.x Ping Pings unit with IP address x.x.x. x to check device status. AT ARP Table Shows the unit’s ARP table entries.
WiBox2100E User Guide 77 1 1 0 0 : : U U p p d d a a t t i i n n g g F F i i r r m m w w a a r r e e This chapter explains how to obtain and update the unit’s firmware. Obtaining Firmware Obtain the most up-to-date firmware an d release notes for the unit from the Lantronix web site ( www.
Updating Firm ware WiBox2100E User Guide 78 Figure 10-1. TFTP W indow After the firmware has been loaded and stored, which takes approximately 8 seconds, the unit performs a power reset. Using TFTP: Command Line Interface To download new firmware from a computer: 1.
Updating Firm ware WiBox2100E User Guide 79 3. From the Tools menu, select Advanced/Recover Firm ware . The Serial Port Firmware Upgrade window displays. 4. For Port on PC , enter the COM port on the PC that is conne cted to the serial port of the Lantronix unit.
WiBox2100E User Guide 80 1 1 1 1 : : W W i i r r e e l l e e s s s s B B r r i i d d g g i i n n g g Note: The WiBox2100E wit h firmware version 6.2 and later will supp ort bridging. Bridging allows a host, connected on th e WiBox’s wired Ethernet interface, to be accessible over the wi reless network (via the WiBox).
Troubleshooting WiBox2100E User Guide 81 Method 3 As an alternative to configuring through t he wired interface, con nect a device through the WiBox’s serial port. For more information on configuratio n through the serial port, see 5: Telnet or Serial Port (Setup Mode) Configuration .
WiBox2100E User Guide 82 1 1 2 2 : : T T r r o o u u b b l l e e s s h h o o o o t t i i n n g g This chapter discusses ho w you can diagnose and fix erro rs quickly without having to contact a dealer or Lantronix. It helps to con nect a terminal to the serial port while diagnosing an error to view summary me ssages that may be displayed.
Troubleshooting WiBox2100E User Guide 83 Problem/Message Reason Solution Ad Hoc network is not enabled in the WiBox. Enable Ad Hoc network. Set Ad Hoc Network Name (IBSS) to match.
Troubleshooting WiBox2100E User Guide 84 Problem/Message Reason Solution The IP address you are trying to assign is not on your logical subnet. Confirm that your PC has an IP address and that it is in the same logical subnet that you are tr ying to assign to the device server.
Troubleshooting WiBox2100E User Guide 85 Problem/Message Reason Solution for making a connection to the WiBox from the network. Use Connect Mode option C1 or C5 for a connection to the network from th.
WiBox2100E User Guide 86 A A : : B B i i n n a a r r y y t t o o H H e e x x a a d d e e c c i i m m a a l l C C o o n n v v e e r r s s i i o o n n s s Many of the unit’s configuration proced ures req uire assembling a series of options (represented as bits) into a co mplete comma nd (represented as a byte).
Binary to Hexadecimal Conversions WiBox2100E User Guide 87 3. Click Bin (Binary), and type the number to convert. 4. Click Hex . The hexadecimal value displays.
WiBox2100E User Guide 88 C C o o m m p p l l i i a a n n c c e e Compliance Information Manufacturer’s Name & Address : Lantronix 15353 Barranca Parkway, Irvine, CA 9261 8 USA Declares that the .
Compliance WiBox2100E User Guide 89 Regulatory Information USA Federal Communications Commission (FCC) Notice This device complies with part 15 of the F CC Rule s.
Compliance WiBox2100E User Guide 90 Antenna Notice: This device has been desi gned to operate with an antenna having a maximum gain of 3 dBi. Antenna having a higher gain is strictly prohibited pe r regulations of Industry Canada. The required antenn a impedance is 50 ohms.
Compliance WiBox2100E User Guide 91 The number “ ACN 095 223 484 “ stands for Australian Comp any Number and the 9 digit number designates the local repre sentative in Australia who can take inquiries regarding thi s product’s compliance statu s.
WiBox2100E User Guide 92 W W a a r r r r a a n n t t y y Lantronix warrants each Lantronix product to be free from defe cts in material and workmanship for a period of TWO YEARS. Du ring this period, if a customer is unable to resolve a product problem with Lantronix Tech nical Support, a Return Material Authorization (RMA) will be issu ed.
Un point important après l'achat de l'appareil (ou même avant l'achat) est de lire le manuel d'utilisation. Nous devons le faire pour quelques raisons simples:
Si vous n'avez pas encore acheté Lantronix Ethernet c'est un bon moment pour vous familiariser avec les données de base sur le produit. Consulter d'abord les pages initiales du manuel d'utilisation, que vous trouverez ci-dessus. Vous devriez y trouver les données techniques les plus importants du Lantronix Ethernet - de cette manière, vous pouvez vérifier si l'équipement répond à vos besoins. Explorant les pages suivantes du manuel d'utilisation Lantronix Ethernet, vous apprendrez toutes les caractéristiques du produit et des informations sur son fonctionnement. Les informations sur le Lantronix Ethernet va certainement vous aider à prendre une décision concernant l'achat.
Dans une situation où vous avez déjà le Lantronix Ethernet, mais vous avez pas encore lu le manuel d'utilisation, vous devez le faire pour les raisons décrites ci-dessus,. Vous saurez alors si vous avez correctement utilisé les fonctions disponibles, et si vous avez commis des erreurs qui peuvent réduire la durée de vie du Lantronix Ethernet.
Cependant, l'un des rôles les plus importants pour l'utilisateur joués par les manuels d'utilisateur est d'aider à résoudre les problèmes concernant le Lantronix Ethernet. Presque toujours, vous y trouverez Troubleshooting, soit les pannes et les défaillances les plus fréquentes de l'apparei Lantronix Ethernet ainsi que les instructions sur la façon de les résoudre. Même si vous ne parvenez pas à résoudre le problème, le manuel d‘utilisation va vous montrer le chemin d'une nouvelle procédure – le contact avec le centre de service à la clientèle ou le service le plus proche.
