Lantronix MSS Reference Manual

Manual is about: MSS For the Lantronix MSS Family of Device Servers

Summary of MSS

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    Mss reference manual for the lantronix mss family of device servers.

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    The information in this guide may change without notice. The manufacturer assumes no responsibility for any errors which may appear in this guide. Unix is a registered trademark of the open group. Ethernet is a trademark of xerox corporation. Dec and lat are trademarks of digital equipment corporati...

  • Page 3: Contents

    I contents 1: introduction............................................................................................................. 1-1 1.1 what’s new ................................................................................................................................1-1 1.2 command s...

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    Contents ii 2.25 change ipsecurity ..................................................................................................................2-27 2.26 change lat circtimer..........................................................................................................2-28 2.27 chang...

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    Contents iii 2.75 help.........................................................................................................................................2-58 2.76 hostlist .............................................................................................................................

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    Contents iv 2.2.1.12 ld=port# ................................................................................................. B-4 2.2.1.13 ln=node# ................................................................................................ B-4 c: show 802.11 errors...............................

  • Page 7: 1:  Introduction

    1- 1 1: introduction the lantronix mss family of device servers allows you to network-enable a variety of serial devices that were not originally designed to be networked: personal computers, terminals, modems, industrial machinery, and more. Certain mss models offer fiber optic ethernet, pc card su...

  • Page 8: 1.3   Command Line Editing

    Command line editing introduction 1- 2 please read this section carefully so you can understand the conventions used in the command descriptions. ◆ commands are listed in alphabetical order. ◆ some commands do not apply to all members of the mss family, and are so noted. ◆ commands and keywords appe...

  • Page 9: 1.4   Help

    Introduction help 1- 3 1.4 help context-sensitive help is available at any time. You may type help by itself for overall help, help for help on a specific command, or a partial command line followed by a question mark for help on what is appropriate at that particular point. See help on page 2-58 fo...

  • Page 11: 2:  Command Reference

    2- 1 2: command reference this chapter describes all commands that can be used with the mss. The commands are listed in alphabetical order, excluding the ports and server parameters, which apply only to the mss4. For example, change server bootgateway is considered the same command as change bootgat...

  • Page 12: 2.1   Backward

    Backward command reference 2- 2 2.1 backward moves the user to the previous session when entered in local mode. See also change backward switch, page 2-14; show session, page 2-66. 2.2 change 80211 note: the change 80211 reset command must be entered after any 802.11 configuration command is issued....

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    Command reference change 80211 2- 3 defaults enabled see also show 80211, page 2-63 2.2.2 change 80211 antenna controls the antenna(s), if any, on the installed wireless card. Not all antennas can be used for both receive and transmit, so be sure to read your card documentation completely. The defau...

  • Page 14: 2.2.4   Change 80211 Essid

    Change 80211 command reference 2-4 2.2.3 change 80211 channel sets the mss operating frequency within the 2.4 ghz band allotted to wireless networking. A direct- sequence 802.11 network on one channel will affect reception on channels up to two numbers away. For best performance on collocated wirele...

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    Command reference change 80211 2-5 errors if you enter a command that is not applicable to the 802.11 card currently in use, you will receive an error message. Parameters name enter a string of up to 32 characters. If the string contains lowercase letters or non-alphanumerics, it may need to be encl...

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    Change 80211 command reference 2-6 restrictions requires privileged user status. Only applies to the mss-via and certain mss4 models. Errors if you enter a command that is not applicable to the 802.11 card currently in use, you will receive an error message. Parameters card instructs the mss to use ...

  • Page 17: 2.2.8   Change 80211 Power

    Command reference change 80211 2-7 2.2.8 change 80211 power controls the card’s transmit power settings. The numeric power setting specified must exactly match a value supported by the card. Any configuration changes you make will not take place until you issue the change 80211 reset command. Restri...

  • Page 18: 2.2.10   Change 80211 Reset

    Change 80211 command reference 2-8 parameters regions ic: canada etsi: europe, most countries (verify with your local regulatory body) spain: spain france: france mkk: japan defaults fcc examples local>> change 80211 region france local>> change 80211 reset see also show 80211, page 2-63 2.2.10 chan...

  • Page 19: 2.2.12   Change 80211 Wep

    Command reference change 80211 2-9 parameters num enter a value between 0 and 3000. Defaults 3000 examples local>> change 80211 rts 0 local>> change 80211 reset see also show 80211, page 2-63 2.2.12 change 80211 wep enabling wep (wireless equivalent privacy) means the mss will only connect to an ap ...

  • Page 20: 2.3   Change Access

    Change access command reference 2-10 keydata enter the wep key. The key format should be entered as “xx-xx-xx-xx...” where each x is a hexadecimal digit (0 through 9 and a through f). Each pair of hex digits (xx) defines a byte of key data, and each byte is separated from the next by a dash. For a 4...

  • Page 21: 2.4   Change Autobaud

    Command reference change autobaud 2-11 portlist specify a particular port or group of ports. Port numbers are specified with integers between 1 and 4, and should be separated with commas (for lists) or dashes (for ranges). Local permits only logins from the attached serial device. Dynamic allows the...

  • Page 22: 2.5   Change Autostart

    Change autostart command reference 2-12 note: in the absence of the portlist parameter, the configuration will affect the mss4’s current port only. Portlist specify a particular port or group of ports. Port numbers are specified with integers between 1 and 4, and should be separated with commas (for...

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    Command reference change autostart 2-13 portlist specify a particular port or group of ports. Port numbers are specified with integers between 1 and 4, and should be separated with commas (for lists) or dashes (for ranges). Character sets a character that will cause a login event. Users will get the...

  • Page 24: 2.7   Change Bootgateway

    Change backward switch command reference 2-14 2.6 change backward switch defines a key that will switch the user to a previous session without entering local mode. From local mode, the key functions as if the backward command was entered. Any key can be specified unless it conflicts with mss line ed...

  • Page 25: 2.8   Change Bootp

    Command reference change bootp 2-15 restrictions requires privileged user status. Parameters server mss4 only. 2.8 change bootp disables or enables querying for a bootp host at system boot time. Restrictions requires privileged user status. Parameters server mss4 only. Defaults enabled 2.9 change br...

  • Page 26: 2.10   Change Buffering

    Change buffering command reference 2-16 remote the mss ignores the break key and passes it to the remote host. Only applicable if the session protocol supports break events. Telnet supports break events, but rlogin, raw tcp, and udp do not. None disables the break key. Defaults none see also change ...

  • Page 27: 2.12   Change Datasend

    Command reference change datasend 2-17 portlist specify a particular port or group of ports. Port numbers are specified with integers between 1 and 4, and should be separated with commas (for lists) or dashes (for ranges). Defaults 8 data bits see also change autobaud, page 2-11; change parity, page...

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    Change datasend command reference 2-18 delay sets the trigger that allows serial data to be accumulated until a “timeout” condition has been detected. Character defines the timeout as a period of time since the last character was received. Num sets the timeout in milliseconds. Frame defines the time...

  • Page 29: 2.13   Change Dedicated

    Command reference change dedicated 2-19 2.13 change dedicated dedicates a port to a telnet, rlogin, or spx host, or to a lat service. Once logged into the port, a user is automatically connected to the host or service; the user cannot return to local mode or enter mss commands. Upon exiting the remo...

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    Change dedicated command reference 2-20 hostlist dedicates the port to a list of hosts. For more information, see the hostlist command on page 2-58. Lat dedicates the port to a lat service. Servicename enter the name of the desired lat service. None disables all previously-configured dedicated hosts...

  • Page 31: 2.14   Change Dhcp

    Command reference change dhcp 2-21 2.14 change dhcp enables or disables querying for a dhcp host at system boot time. Restrictions requires privileged user status. Errors configuring an ip address will automatically disable dhcp. Enabling dhcp will remove the ip address saved in non-volatile memory ...

  • Page 32: 2.16   Change Dsrlogout

    Change dsrlogout command reference 2-22 2.16 change dsrlogout if dsrlogout is enabled, the specified port will be logged out when its dsr signal is de-asserted. This logout usually happens only when the attached device is turned off or disconnected. The feature can be used to keep users from switchi...

  • Page 33: 2.18   Change Flow Control

    Command reference change flow control 2-23 portlist specify a particular port or group of ports. Port numbers are specified with integers between 1 and 4, and should be separated with commas (for lists) or dashes (for ranges). Defaults disabled 2.18 change flow control sets the type of flow control ...

  • Page 34: 2.20   Change Gateway

    Change forward switch command reference 2-24 2.19 change forward switch defines a key that will switch the user to the next session without entering local mode. In local mode, the key functions as if the forward command was entered. Any key can be specified unless it conflicts with mss line editing ...

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    Command reference change inactive logout 2-25 parameters server mss4 only. Secondary configures a gateway to be used when the primary gateway is unavailable. Ipaddress specify a host using the numeric ip address format. Specifying an ip address of 0.0.0.0 removes the previously-defined gateway. See ...

  • Page 36: 2.23   Change Incoming

    Change incoming command reference 2-26 parameters server mss4 only. Period enter a length of time in minutes (1 to 120) or seconds (5 to 60). For minutes, add an m after the number. For seconds, add an s after the number. Defaults 30 minutes examples local> change inactive timer 10m see also change ...

  • Page 37: 2.24   Change Ipaddress

    Command reference change ipaddress 2-27 password prompts the user to enter the login password when attempting an incoming connection. Nopassword allows incoming connections without prompting for the login password. Defaults telnet, nopassword see also change loginpass, page 2-31. 2.24 change ipaddre...

  • Page 38: 2.26   Change Lat Circtimer

    Change lat circtimer command reference 2-28 restrictions requires privileged user status. The both, incoming, and outgoing parameters are only applicable to the mss4. Parameters ipaddress specify an address in standard numeric format. An address with 0 or 255 in any segment restricts all addresses i...

  • Page 39: 2.27   Change Lat Groups

    Command reference change lat groups 2-29 2.27 change lat groups specifies the lat service groups to which the mss can connect. Groups are numbered from 0 to 255. Restrictions requires privileged user status. Errors the msslite, mss4, and the mss-via do not support lat. Parameters grouplist specify a...

  • Page 40: 2.30   Change Local Switch

    Change local switch command reference 2-30 secondary configures a loadhost to be used when the primary loadhost is unavailable. Ipaddress specify a host using standard numeric format—host names cannot be resolved via a nameserver. Specifying an ip address of 0.0.0.0 removes the previously- defined l...

  • Page 41: 2.31   Change Loginpass

    Command reference change loginpass 2-31 2.31 change loginpass specifies the password used to log into the mss. The password should consist of no more than 6 alphabetic letters. Users are only required to provide this password if the port has password protect enabled. If you do not enter the password...

  • Page 42: 2.34   Change Name

    Change modem emulation command reference 2-32 portlist specify a particular port or group of ports. Port numbers are specified with integers between 1 and 4, and should be separated with commas (for lists) or dashes (for ranges). Defaults disabled see also change autostart, page 2-12; change dsrlogo...

  • Page 43: 2.35   Change Nameserver

    Command reference change nameserver 2-33 errors the server name must be unique to the network. Parameters server mss4 only. Servername enter a string of up to 16 characters. Strings must be enclosed in quotes if they contain lower-case letters, spaces, or punctuation. See also change wins, page 2-51...

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    Change netware internal network command reference 2-34 parameters ether_ii enables ethernet v2 frame type. Native enables the “native mode” netware frame type. Snap enables the 802.2 frame type with snap saps. 802_2 enables the 802.2 frame type with netware saps. Defaults all enabled (internal routi...

  • Page 45: 2.40   Change Parity

    Command reference change netware routing 2-35 parameters fileserver enter the name of the desired fileserver using no more than 8 characters. None specifies that no loadhost will be used. See also change software, page 2-45. 2.39 change netware routing allows the mss to act as an internal router whe...

  • Page 46: 2.41   Change Passflow

    Change passflow command reference 2-36 parameters port mss4 only. Specifies a particular port or group of ports. Note: in the absence of the portlist parameter, the configuration will affect the mss4’s current port only. Portlist specify a particular port or group of ports. Port numbers are specifie...

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    Command reference change password incoming 2-37 2.42 change password incoming controls whether the mss will ask users for an incoming password when they attempt to connect to the network socket connection ports (ports 200x and 300x, where x is the number of the desired serial port). See environment ...

  • Page 48: 2.45   Change Portname

    Change password protect command reference 2-38 2.44 change password protect controls whether a password is needed to log into the mss from a serial port. For models with a dedicated console port (the mss-via, mss485, and the msslite a and c), this command will also affect the serial console port. To...

  • Page 49: 2.46   Change Preferred

    Command reference change preferred 2-39 2.46 change preferred specifies a default service for the specified port. The mss will attempt to use the preferred service for autoconnecting, or when no host name is specified for a tcp (telnet), rlogin, spx, or lat connection command. Restrictions requires ...

  • Page 50: 2.47   Change Privpass

    Change privpass command reference 2-40 servicename enter the name of the desired lat service. Envstring add the desired environment key(s). See appendix b for a complete list of strings. Options must be separated by colons. None clears preferred service configurations. See also change dedicated, pag...

  • Page 51: 2.50   Change Rlogin

    Command reference change retransmit limit 2-41 defaults enabled 2.49 change retransmit limit ‘ specifies the number of retries attempted if a network message receives no acknowledgment. This number may need to be increased on noisy or heavily-used networks. The rate at which retransmits are sent is ...

  • Page 52: 2.51   Change Rs485

    Change rs485 command reference 2-42 2.51 change rs485 enables rs-485 networking and configures the necessary rs-485 parameters on the mss-via and the mss4. Rs-485 networking is explained in the configuration chapter of your mss installation guide. Restrictions requires privileged user status. Errors...

  • Page 53: 2.52   Change Secondary

    Command reference change secondary 2-43 txdrive controls how the mss drives the tx pin. Always sets the mss to drive tx. The mss will never tristate tx, even if data is not being sent. Auto sets the mss to drive tx only when transmitting, and tristate when not transmitting. Defaults disabled mode = ...

  • Page 54: 2.55   Change Silentboot

    Change silentboot command reference 2-44 restrictions requires privileged user status. Does not apply to the mss485. Parameters port mss4 only. Specifies a particular port or group of ports. Note: in the absence of the portlist parameter, the configuration will affect the mss4’s current port only. P...

  • Page 55: 2.57   Change Software

    Command reference change software 2-45 examples change snmpsetcomm wphred (adds a single community with read-write access) see also the configuration chapter of your installation guide 2.57 change software specifies the name of the download file that, when a reload has been requested, the mss will a...

  • Page 56: 2.59   Change Startup

    Change startup command reference 2-46 rate available speeds (baud rates) are generally 300, 600, 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200, and 230400 baud. The msslite can only go as high as 38400 baud. Defaults 9600 baud see also change autobaud, page 2-11. 2.59 change startup configures...

  • Page 57: 2.60   Change Stopbits

    Command reference change stopbits 2-47 num specify the desired number or retry attempts. Enter zero to make the mss retry until the startupfile is read (indefinitely). Defaults retry: 5 examples local> change startup file “bob:start” local> change startup file hevax::start.Com local> change startup ...

  • Page 58: 2.62   Change Tcpkeepalive

    Change tcpkeepalive command reference 2-48 restrictions requires privileged user status. Parameters server mss4 only. Mask specify a mask in numeric ip format, for example, 255.255.255.0. See also change ipaddress, page 2-27; change gateway, page 2-24. 2.62 change tcpkeepalive controls the transmiss...

  • Page 59: 2.64   Change Telnetpad

    Command reference change telnetpad 2-49 2.64 change telnetpad when enabled, telnetpad tells the mss to pad carriage returns with null characters during telnet sessions. The telnet rfc (request for comments) specifies telnetpad enabled. Restrictions requires privileged user status. Parameters port ms...

  • Page 60: 2.66   Change Timeserver

    Change timeserver command reference 2-50 2.66 change timeserver specifies which timeserver the mss will use to update its internal clock. The mss can communicate with either daytime or network timeserver protocol (ntp) servers. For ntp, the mss can periodically broadcast a message asking for time in...

  • Page 61: 2.67   Change Verify

    Command reference change verify 2-51 2.67 change verify controls whether the mss will provide informational messages whenever a session is connected, disconnected, or switched. Restrictions requires privileged user status. If a port is dedicated, verify is disabled. Parameters port mss4 only. Specif...

  • Page 62: 2.69   Crypt Password

    Crypt password command reference 2-52 2.69 crypt password changes the password used for the encryption mode environment string (:y). Both ends of the connection must agree on the encryption password being used. You must reboot after changing the encryption password. This command can be used to confi...

  • Page 63: 2.70   Disk

    Command reference disk 2-53 2.70 disk performs disk management functions for the mss and, for models with pc card support, for any installed ata flash card. The mss contains two modifiable directories—/ram and /flash—and one read-only directory—/rom. For mss models with one pc card slot, an ata card...

  • Page 64

    Disk command reference 2-54 errors for the /pccard1 and /pccard 2 parameter, you will receive an error if either the specified card is not a storage card or if there is no card in the slot. Parameters cat displays an entire file in your terminal window. Cd changes your current working directory. Chm...

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    Command reference disk 2-55 /pccard1 and /pccard2 formats an ata flash card for use in an mss pc card slot. An unformatted card can not be used by the mss. The /pccard1 parameter applies to all mss products with one pc card slot (mss-via) or the first (top) slot of the mss4. The /pccard2 parameter a...

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    Disk command reference 2-56 rm removes files and/or directories from the mss ram and flash disks. The possible flags are: rmdir removes a directory from the specified disks. The command can only be used if the directory is empty. If the directory is full, you must add the disk rm - rf command. Sync ...

  • Page 67: 2.71   Delete Ipsecurity

    Command reference delete ipsecurity 2-57 2.71 delete ipsecurity removes entries from the ip security table. Restrictions requires privileged user status. Errors an error will be returned if the ipsecurity entry does not exist. See also change ipsecurity, page 2-27; show ipsecurity, page 2-64. 2.72 d...

  • Page 68: 2.74   Forward

    Forward command reference 2-58 2.74 forward when entered in local mode, moves users one session forward (to a more recent session). See also backward, page 2-2; change backward switch, page 2-14; change forward switch, page 2-24; change local switch, page 2-30. 2.75 help allows the user to view comm...

  • Page 69: 2.77   Initialize

    Command reference initialize 2-59 servicename enter the name of the desired lat service. Rlogin adds an rlogin entry to the host table. Hostname enter the ip address of the target host. For udp only, resolvable hostnames and broadcast/multicast ip addresses can be used. Spx adds an spx entry to the ...

  • Page 70: 2.78   Lat

    Lat command reference 2-60 parameters delay schedules a reboot after a specified number of minutes. Num enter the number of minutes, from 0 (immediate) to 120. Factory reboots the mss with its factory-configured settings. Noboot cycles power on the mss, but without booting. The mss will remain in th...

  • Page 71: 2.80   Netstat

    Command reference netstat 2-61 note: in the absence of the portlist parameter, the configuration will affect the mss4’s current port only. Portlist mss4 and mss-via only. Specify a port number as an integer between 1 and 3 (via) or 1 and 6 (mss4). You can not log out multiple ports at once. Number e...

  • Page 72: 2.83   Rlogin

    Rlogin command reference 2-62 2.83 rlogin attempts to log in to a remote host as a local user. Parameters ipaddress specify a resolvable text host name or a numeric ip address. This parameter is optional if a preferred telnet service has been defined. Username specify a name to be used as the login ...

  • Page 73: 2.85   Set Privileged

    Command reference set privileged 2-63 2.85 set privileged changes the port’s privileged status. Note: if you forget the password, you must reset the mss to its factory defaults. See initialize on page 2-59 for instructions. Restrictions secure users may not become the privileged user. Only one port ...

  • Page 74: 2.87   Show Hostlist

    Show hostlist command reference 2-64 2.87 show hostlist displays the current list of remote hosts to use for multihost mode connections. See also status displays, page 7-6; multihost mode, page 7-10; hostlist, page 2-58. 2.88 show ipsecurity displays the current tcp/ip security table. Each address o...

  • Page 75: 2.91   Show Ports

    Command reference show ports 2-65 spx shows spx node hop counts, frame types, and availability. See also status displays, page 7-6. 2.91 show ports displays all serial port settings, including the port’s connection status, the flow control state , the state of dsr and dtr serial signals, the access ...

  • Page 76: 2.94   Show Services

    Show services command reference 2-66 parameters bootparams displays mss parameters that relate to the boot procedure and software loadfile. Counters displays ethernet and tcp/ip error information. Characteristics displays server settings including hardware address, timer limit, password limit, sessi...

  • Page 77: 2.96   Show Snmp

    Command reference show snmp 2-67 2.96 show snmp displays configured snmp communities and their access modes (read-only or read/write). The default community name is public, and allows read-only access. There is one additional user-configurable snmp community. See also status displays, page 7-6; chan...

  • Page 78: 2.100   Spx

    Spx command reference 2-68 examples local> source “labsun:start.Com” see also change startup file, page 2-46 2.100 spx attempts a connection to an spx-enabled device on the network. Spx devices announce their availability to the network with sap names; the target device must be advertising itself vi...

  • Page 79: 2.102   Test

    Command reference test 2-69 2.102 test tests a serial port’s connection. When the test command is entered without any parameters, test lines of 70 characters are sent to the specified serial port until a key is pressed. Restrictions nonprivileged users may only test their current port. Parameters po...

  • Page 81: A:  Contact Information

    A-1 a: contact information if you are experiencing an error that is not listed in appendix b of your installation guide, or if you are unable to fix the error, contact your dealer or lantronix technical support at 800-422-7044 (us) or 949- 453-3990. Technical support is also available via internet e...

  • Page 83: B:  Environment Strings

    B-1 b: environment strings b.1 usage an environment string is a sequence of key letters, sometimes prefixed by a plus (+) or minus (-). Environment strings can be used with change dedicated, change preferred, hostlist, lat, and telnet to configure connections. The keys are added after the hostname (...

  • Page 84: B.2.1   Usage Examples

    Available strings environment strings b-2 b.2.1 usage examples these examples should illustrate the proper usage of the above environment strings. 2.2.1.1 nnnn sets a socket number. For tcp and udp connections only. The most common socket numbers are 7000 (the mss remote console port), 200x (for tel...

  • Page 85

    Environment strings available strings b-3 2.2.1.5 or sets up a dedicated redirector connection. Enabling autostart for the dedicated port, as shown in the example below, will automatically start the redirector connection. More information about the lantronix com port redirector software is available...

  • Page 86

    Available strings environment strings b-4 examples local>> change dedicated tcp 192.73.220.1:u local>> change dedicated tcp :u (forms a passive udp session with any host) local>> change dedicated tcp :us60 (forms a passive udp session where the mss will wait 60 seconds after receiving a packet from ...

  • Page 87: C:  Show 802.11 Errors

    Show 802.11 errors introduction c-1 c: show 802.11 errors c.1 introduction when you enter the show 80211 command without any other parameters, the resulting screen includes a field for errors. The “errors:” field displays two eight-digit numbers, separated by a comma. These numbers are a 64-bit wide...

  • Page 88

    Error bits show 802.11 errors c-2 08000000 fragment reassembly timed out. Failed to receive all the fragments of a fragmented 802.11 packet before the reassembly window expired. Dropped some correctly received fragments. 04000000 received an 802.11 packet with invalid subtype code. 02000000 received...

  • Page 89: C.2.2   Rightmost Number

    Show 802.11 errors error bits c-3 00000080 authentication with the ap failed because either the unit or the ap sent an incorrect authentication packet. Some aps will erroneously return this error code when the problem is actually "authentication type not allowed". 00000040 authentication with the ap...

  • Page 90

    Error bits show 802.11 errors c-4 00040000 unassigned. 00020000 internal error. May occur on some cards in conjunction with other described error codes. 00010000 the 802.11 card in use is not compatible with the regulatory region to which the unit has been programmed. 00008000 internal error. 000040...

  • Page 91: Index

    Index-1 index numerics 802.11 2-2 , 2-63 antenna 2-3 channel 2-4 errors c-1 essid 2-4 fragmentation 2-5 mac address 2-5 network mode 2-6 power 2-7 , 2-8 region 2-7 rts 2-8 wep 2-9 a access mode 2-10 antenna, 802.11 2-3 ata flash cards 2-53 autobaud 2-11 autostart 2-12 b backward switch 2-2 , 2-14 ba...

  • Page 92

    Index index-2 i inactivity timer 2-25 incoming connections 2-26 password 2-26 , 2-37 initialize 2-59 internal network number 2-34 ip address 2-27 security 2-27 , 2-57 , 2-64 ipx (netware) spx 2-68 l lantronix a-1 lat 2-60 , 2-64 circuit timer 2-28 destination port b-4 groups 2-29 identification 2-29...

  • Page 93

    Index index-3 sockets b-2 software 2-45 , 2-67 spx 2-64 , 2-68 startup file 2-46 stop bits 2-47 subnet mask 2-47 switches backward 2-14 forward 2-24 local 2-30 t telnet 2-48 , 2-68 padding characters 2-48 , 2-49 raw connections b-3 terminal type 2-49 test command 2-69 timers circuit 2-28 inactivity ...