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LSB4 Reference Manual

Switch Commands

7-1

Introduction

Switch commands are used to configure and display the LSB4Õs switch func-
tions, including Spanning Tree configurations, updates to the address table, and 
port priority values.

Set/Define Switch

Set Switch and Define Switch accept the following parameters: 

♦  

Forward Delay:

SpeciÞes a delay time between state changes

♦  

Hello Time:

SpeciÞes how often BPDU packets are trans-
mitted 

♦  

Maximum Age:

Sets a maximum time by which a BPDU 
packet must be received in order for the cur-
rent root to remain the root

♦  

Priority:

SpeciÞes a priority value for one or all LSB4 
ports

♦  

Spanning Tree:

Enables or disables the Spanning Tree Algo-
rithm

♦  

Speed:

DeÞnes the speed of the LSB4

♦  

Weed:

Controls the interval the LSB4 will wait to 
hear from a node before it removes its hard-
ware address from the address table

♦  

Ethernet:

SpeciÞes which LSB4 port will be conÞgured 
by Set/DeÞne Switch commands

♦  

Path Cost:

Assigns a path cost value

♦  

State:

Enables or disables the LSB4 or a particular 
port

♦  

Filter:

Associates a Þlter list with an LSB4 port

The Spanning Tree Algorithm requires certain timing values to operate correct-
ly. If an attempt is made to set a Spanning Tree parameter to an unacceptable 
timing value, an error message will be displayed. The individual options below 
discuss specific timing issues; the ranges of acceptable values are subject to the 
values of other options.

Show/Monitor/List Switch

These commands display LSB4 configuration, current status, and settings.

7chapternumber

For information 
about the Spanning 
Tree Algorithm, see 
Appendix B of the 
LSB4 Installation 
Guide.

For an explanation 
of the 

Set

 and 

De-

fine

 commands, see 

page 2-1.

For an explanation 
of the 

Show/Moni-

tor/List 

com-

mands, see page 2-1.

Summary of Contents for LSB4

Page 1: ...vice pursuant to Part 15 of FCC Rules These limits are designed to provide reasonable pro tection against such interference when operating in a commercial environment This equip ment generates uses and can radiate radio frequency energy and if not installed and used in accordance with this guide may cause harmful interference to radio communications Operation of this equipment in a residential are...

Page 2: ...LSB4 Reference Manual For Lantronix LSB4 Ethernet Switch ...

Page 3: ... Set Define System 2 2 Show Monitor List System 2 4 Set Privileged 2 5 3 Protocol Commands Introduction 3 1 Set Define Protocol 3 2 Show List Protocol 3 4 4 Port Commands Introduction 4 1 Set Define Port 4 2 Show Monitor List Port 4 4 5 SNMP Commands Introduction 5 1 Set Define SNMP 5 2 Show List SNMP 5 3 ...

Page 4: ... 12 7 Switch Commands Introduction 7 1 Set Define Switch 7 2 Show Monitor List Switch 7 5 8 Save Command Introduction 8 1 Save 8 2 9 Miscellaneous Commands Introduction 9 1 Cls 9 2 Finger 9 2 Help 9 2 Initialize 9 3 Lock 9 4 Logout 9 5 Netstat 9 5 Ping 9 5 Show Users 9 6 Unlock 9 6 Zero Counters 9 7 Technical Support Glossary Index ...

Page 5: ...1 Introduction About This Manual 1 1 Manual Conventions 1 2 Required Parameters 1 2 Optional Parameters 1 2 User Defined Parameters 1 2 Restrictions 1 2 ...

Page 6: ...is manual covers the following topics Manual conventions System commands Set Define System Show Monitor List System Set Privileged Protocol commands Set Define Protocol Show List Protocol Port commands Set Define Port Show Monitor List Port SNMP commands Set Define SNMP Show List SNMP Filter commands Set Define Filter Show List Filter Clear Purge Filter Switch commands Set Define Switch Show Monit...

Page 7: ...lparametersappearinallcapitallettersandwithinbrack ets When there is a choice of two or more optional parameters that may be used with a command all available options will be dis played within brackets For example if either Characteristics or Counters may be used with a command the parameters will be displayed as follows User Defined Parameters These parameters are displayed in italics The name of...

Page 8: ...2 System Commands Introduction 2 1 Set Define System 2 2 Show Monitor List System 2 4 Set Privileged 2 5 ...

Page 9: ...t commands function in a similar manner to the Set Define commands Show displays the current settings including those Set but not saved as permanent changes Monitor displays the same current information as Show but is updated every three seconds The List command displays perma nent settings Set Define System Set System and Define System accept the following parameters Incoming SpeciÞes login restr...

Page 10: ... from remote hosts systemname Any combination of up to sixteen characters When the LSB4 is shipped the system name is in the form LSB4_xxxxxx The six xÕs represent the last six hexadecimal digits of the ethernet address Privileged Password Establishes or changes the password required to use privi leged commands SET DEFINE SYSTEM INCOMING TELNET NONE PASSWORD NOPASSWORD LOGIN PASSWORD CurrentPswd N...

Page 11: ...Refresh Specifies how often information displayed by a Monitor com mand is updated seconds A value from 2 to 60 Software Specifies the name and path to the file to be downloaded to the LSB4 at boot time filename Any combination of up to forty six characters The file name may contain up to fifteen characters and the path may be up to thirty one characters Restrictions This command requires privileg...

Page 12: ...ags and any login restric tions Counters Displays a current count of traffic being directed to the LSB4 The counters represent traffic to the switch telnet sessions traffic to the switch ping traffic to the switch etc not traffic that is being forwarded The counters are reset every time the LSB4 is turned on re booted re initialized or a Zero Counters System command is entered Status Displays avai...

Page 13: ...is status will remain in effect until the user logs out of the LSB4 a Set Privileged Override command is entered or a Set Noprivileged command is entered Override Permits user to obtain supervisor status when another user is currently logged into the LSB4 with supervisor status When this command is entered supervisor status is given and the other user s supervisor status is immediately disabled No...

Page 14: ...System Commands LSB4 Reference Manual 2 6 ...

Page 15: ...3 Protocol Commands Introduction 3 1 Set Define Protocol 3 2 Show List Protocol 3 4 ...

Page 16: ...arameters Show List Protocol Show Protocol and List Protocol display the status of the LSB4Õs protocol set tings Protocol Parameter Function AppleTalk Zone IdentiÞes an AppleTalk zone for the LSB4 IP IPaddress SpeciÞes an IP address for the LSB4 Loadhost SpeciÞes a host from which to download software to the LSB4 Subnet Mask Assigns a subnet mask Netware Loadhost SpeciÞes a host from which to down...

Page 17: ...ks An IP address must be in the following form nnn nnn nnn nnn where nnn is a decimal number between 0 and 255 IP IPaddress Specifies the LSB4Õs IP address address An IP address in the following form nnn nnn nnn nnn where nnn is a decimal number between 0 and 255 SET DEFINE PROTOCOL APPLETALK ZONE zonename ENABLED DISABLED IP ENABLED DISABLED IPADDRESS address LOADHOST name SECONDARY LOADHOST addr...

Page 18: ...ost cannot be reached address An IP address in the following form nnn nnn nnn nnn where nnn is a decimal number between 0 and 255 The peri ods must be included IP Subnet Mask Specifies the IP address of a subnet mask A subnet mask is automatically assigned when Set Define Protocol IP IPAd dress is used to specify an IP address This parameter is used to override the assigned subnet mask address An ...

Page 19: ...mples Local SET PROTOCOL IP LOADHOST elmer cid ins com Local SET PROTOCOL APPLETALK ZONE Lab_Zone Local SET PROTOCOL NETWARE LOADHOST Acct_Fserv See Also Set Privileged page 2 5 Show List Protocol Parameters AppleTalk IP Netware Displays the current AppleTalk IP or Netware configuration SHOW LIST PROTOCOL APPLETALK IP NETWARE ...

Page 20: ...4 Port Commands Introduction 4 1 Set Define Port 4 2 Show Monitor List Port 4 4 ...

Page 21: ...re the LSB4 Parity Speed and Type functions properly when connected to a modem or terminal Command Completion Instructs the LSB4 to complete a keyword when keywords are being entered and the space bar is pressed Show Monitor List Port Show Port Monitor Port and List Port display the current and permanent set tings of the LSB4 s serial console port 4chapternumber For an explanation of the Set and D...

Page 22: ...n the user logs out of the switch If remotely logged into the LSB4 the configura tions will take effect when the user logs out of the port The LSB4 does not have to be rebooted or initialized to store port configurations in current memory SET DEFINE PORT CHARACTER SIZE 7 8 COMMAND COMPLETION ENABLED DISABLED FLOW CONTROL CTS DSR XON NONE MODEM CONTROL ENABLED DISABLED PARITY ODD EVEN SPACE MARK NO...

Page 23: ...l console port drops When disabled the LSB4 will ignore the status of DTR and DSR signals Parity Specifies a parity setting of Odd Even Space Mark or None Speed Specifies one of the following baud rates 300 600 1200 2400 4800 9600 19200 38400 57600 115200 Type Use this parameter to specify the desired output from the se rial console port If ANSI is selected the output will contain cursor movement ...

Page 24: ...ular port number enter the Show Users command or the Show Port All command What is displayed depends on any additional parameters specified For example if Counters is specified the port counters will be displayed If a port number is specified with out another parameter the Characteristics for the specified port will be displayed All Displays the serial console port and any other current net work c...

Page 25: ...5 SNMP Commands Introduction 5 1 Set Define SNMP 5 2 Show List SNMP 5 3 ...

Page 26: ...eters to different nodes on the local area network SNMP commands described below are used to specify and configure limits to the usage of SNMP Set Define SNMP These commands specify which users can configure and obtain information from the LSB4 using SNMP Show List SNMP Show SNMP and List SNMP display the current status and settings of SNMP re strictions 5chapternumber For an explanation of the Sh...

Page 27: ...cess Gives a specified type of access to a specified community name None denies access to SNMP packets containing the specified community name Readonly permits SNMP packets containing the specified community name to query the LSB4 for information Readwrite permits full access SNMP packets containing the specified community name may query for information and specify commands that can alter the conf...

Page 28: ...LSB4 Reference Manual SNMP Commands 5 3 Show List SNMP Show SNMP and List SNMP display the SNMP community names and access types SHOW LIST SNMP ...

Page 29: ...SNMP Commands LSB4 Reference Manual 5 4 ...

Page 30: ...6 Filter Commands Introduction 6 1 Configuring a Filter List 6 2 Set Define Filter 6 4 Show List Filter 6 11 Clear Purge Filter 6 12 ...

Page 31: ...th the different LSB4 ports using the Set Define Switch command The LSB4 compares each data packet against each filter starting with the first fil ter on the list up to 16 entries may be included in a filter list It continues com paring until the data packet matches a filter on the list The packet will then be either permitted or denied passage through the switch If no match is found the packet is...

Page 32: ... necessary After a filter list is associated with a port the filterÕs configuration must be spec ified using Set Define Filter commands These commands specify the following information the filter list number where the new filter will be placed in the filter list the packet type to be filtered and whether to forward or discard the speci fied type of packet A complete explanation of the Set Define F...

Page 33: ... ly enabled the Set Privileged command will not be necessary The commands in Figure 6 4 prevent any IP traffic between LSB4 ports for ex ample IP packets from LAN 1 cannot reach LAN 2 and IP packets from LAN 2 cannot reach LAN 4 Figure 6 4 Preventing IP Traffic Between All Segments The Set Switch command used above did not specify a particular ethernet port to be used with filter 1 as a result all...

Page 34: ... for example if you enter a value of 3 the new filter will be inserted into the list just before the filter currently occupying position 3 If you enter a value larger than the current number of filters on the list the new filter will be added at the end of the list All Specifies that every data packet will be allowed or denied pas sage through the LSB4 Using the All parameter and specify ing Allow...

Page 35: ... will be filtered For example the following pat tern 0 80 a3 will filter all packets that have 0 80 a3 as the first three bytes of their source address The final three bytes represented by asterisks may vary Destination address Permits or denies passage of data packets destined for a spe cific node on the local area network As with Source the address may be specified in one of two ways with the sp...

Page 36: ...address of a specific node The address may be specified in one of two ways with the specific Ether net address or with patterns If a pattern is entered instead of a complete address packets with source addresses matching the pattern will be filtered For example the following pat tern 0 80 a3 will filter all packets that have 0 80 a3 as the first three bytes of their source address The final three ...

Page 37: ...ocols present in the local area network A protocol can be identified by entering hexa decimal characters or by selecting a protocol mnemonic for example IP Protocols may have mnemonics for subgroups and these subgroups may have further subgroups For clarity proto cols one two or three are identified In the syntax on page 6 9 the protocol mnemonics in the leftmost column are lev el one If a level o...

Page 38: ...and three pro tocols will be denied passage through the LSB4 with the ex ception of the TCP IP data packets allowed by the preceding command It is important to note that if the order of the two command ex amples above were reversed the results would be different No IP data packets would be passed by the switch regardless of the subsequent filter command If the information on Protocol identifier is...

Page 39: ... cont PROTOCOL protocol ident APPLETALK ATP PAP AFP NBP ZIP RTMP ARP AARP DECNET IGRP IP TCP SMTP FTP RUNIX SPORT portIdent DPORT portIdent ICMP OSPF RIP UDP NFS SNMP RPC SPORT portIdent DPORT portIdent IPX RIP SAP SPX MOPRC MOPDL SNA SNMP SNMPT VINES LAVC XNS ...

Page 40: ...l port of the data packet Sport is used to define the source protocol port of a data pack et Dport defines the destination protocol port portident is one byte four hexadecimal characters long The hexadecimal characters must be preceded by 0x Allow Deny Permits or denies passage of data packets that meet the spec ified filter criteria Examples Local SET FILTER 0 APPEND PROTOCOL MOPRC DENY Local SET...

Page 41: ... 11 Show List Filter Parameters Filter Displays the specified filter list filtr A value between 1 and 4 All Displays all filter lists If the filtr and All parameters are omit ted all filters will be shown or listed SHOW LIST FILTER filtr ALL ...

Page 42: ...ilter Item Command An ÒitemÓ may consist of one item a list of items range of items or a combination Some examples are given below Figure 6 11 Figure 6 11 Item Parameter Examples All Removes the entire specified filter list If both All and Item itemnumber are omitted filters will not be cleared or purged Restrictions This command requires privileged status See Also Set Privileged page 2 5 CLEAR PU...

Page 43: ...7 Switch Commands Introduction 7 1 Set Define Switch 7 2 Show Monitor List Switch 7 5 ...

Page 44: ... node before it removes its hard ware address from the address table Ethernet SpeciÞes which LSB4 port will be conÞgured by Set DeÞne Switch commands Path Cost Assigns a path cost value State Enables or disables the LSB4 or a particular port Filter Associates a Þlter list with an LSB4 port The Spanning Tree Algorithm requires certain timing values to operate correct ly If an attempt is made to set...

Page 45: ...ot to remain the root When the LSB4 has not heard from the root received a BPDU pack et by this time it will assume that the root is down and will attempt to find a new root age A value between 6 and 40 It must be less than 2 x Forward Delay 1 and larger than 2 x HelloTime 1 SET DEFINE SWITCH BRIDGE FORWARD DELAY delay HELLO TIME time MAXIMUM AGE age PRIORITY value SPANNING TREE ENABLED DISABLED W...

Page 46: ... Define Switch commands port A value between 1 and 4 designating which port is to be con figured Path Cost Specifies the cost to send a packet from the LSB4 to the root through a particular port The Spanning Tree algorithm uses current path cost values to determine which links in the net work to disable If necessary the port with the higher path cost value will be disabled first value A value betw...

Page 47: ...r commands If the Ethernet port parameter is omitted the specified filter list will be associated with all LAN ports Speed Defines the speed of the LSB4 Fast Sets the LSB4 to fast mode in this mode the LSB4 can obtain its peak performance When Speed is set to Fast user defined filters traffic counters and some bridge MIB SNMP counters will be unavailable Normal Sets the LSB4 speed to normal perfor...

Page 48: ...t port parameters Status Address Counters and Traffic are omitted Status in formation will be displayed Addresses Displays the ethernet addresses heard on each LAN port The addresses most recently heard from will be displayed num Specifies a number of minutes Show Switch Address num will display all addresses heard from within num All Displays all known addresses Counters Displays a current count ...

Page 49: ...collisions and or excessive deferrals If a packet is delayed the LSB4 will attempt to retrans mit it until transmission is successful Switch Counters LSB4 Version V1 0 1 940119 Topology Changes 11 Time Since Enabled 1 15 07 Packets Received 1143399 Packets Transmitted 231662 Missed packets 23 Delayed Transmissions 14 Octets Received 290628732 Octets Transmitted 69685850 Packets Filtered 923719 Pac...

Page 50: ...her node attempts to send a packet onto the ethernet at the same time the LSB4 is sending a packet Misaligned Packets Rx Displays the total number packets received with Frame Alignment Errors Missed Packets Displays the total number of packets ÒdroppedÓ by the LSB4 This occurs when the LSB4 has used all of its memory re sources for buffering incoming packets RBA RRA this number should be small Mul...

Page 51: ... Packets Not Forwarded Displays the total number of packets not transmitted due to transmit buffers being exhausted during transmit queue over runs Packets Received Displays the total number of ethernet pack ets received by the LSB4 Packets To Us Displays the total number of packets re ceived with the ethernet destination ad dress matching one of the LSB4Õs hardware addresses Packets Transmitted D...

Page 52: ...occurred Transmit Queue Overrun Displays the total number of packets the LSB4 attempted to transmit onto the LAN but could not This condition usually oc curs when the LSB4 has its allocated Trans mit Buffers exhausted Transmit Queue Size Of the total number of transmit slots avail able in the queue displays the number of packets that the LSB4 currently has queued to transmit Parameters Traffic Fun...

Page 53: ...Switch Commands LSB4 Reference Manual 7 10 ...

Page 54: ...8 Save Command Introduction 8 1 Save 8 2 ...

Page 55: ...d or initialized Configurations made with Set Define Port and Set Define Switch commands will not be affected by the Save System command Save Port or Save Switch must be used to save these commands in permanent memory Save accepts the following parameters Port Saves the speciÞed portÕs current settings in permanent memory System Saves all current system conÞgurations in permanent memory Protocol S...

Page 56: ...configurations in the LSB4Õs permanent memory All Saves all current filter configurations num A number between 1 and 4 specifying a particular filter list The current filter configurations on this list will be saved in permanent memory SNMP Saves the current SNMP settings in the LSB4Õs permanent memory Switch Bridge Saves the current switch and filter settings SAVE PORT num SYSTEM PROTOCOL IP NETW...

Page 57: ...anual Save Command 8 3 Save cont Restrictions This command requires privileged status Examples Local SAVE FILTER 3 Local SAVE PROTOCOL APPLETALK Local SAVE SYSTEM Local SAVE FILTER ALL See Also Set Privileged page 2 5 ...

Page 58: ...Save Command LSB4 Reference Manual 8 4 ...

Page 59: ...9 Miscellaneous Commands Introduction 9 1 Cls 9 2 Finger 9 2 Help 9 2 Initialize 9 3 Lock 9 4 Logout 9 5 Netstat 9 5 Ping 9 5 Show Users 9 6 Unlock 9 6 Zero Counters 9 7 ...

Page 60: ...ts on the network Help Accesses the switch help text Initialize Initializes ÒrebootsÓ the LSB4 Lock Prevents other users from accessing a login session Logout Logs out of the LSB4 Netstat Displays a list of network logins Ping Tests IP access to another host Show Users Displays all users currently logged into the LSB4 Unlock Unlocks a currently locked port Zero Counters Resets counters to zero 9ch...

Page 61: ...aracters or an IP address If an IP address is used it must be in the following format nnn nnn nnn nnn where nnn is a decimal number between 0 and 255 Help This command displays information about a particular LSB4 command If the current user level does not permit the use of a particular command Help will not be available for that command Parameters commandname Any combination of characters If the c...

Page 62: ...ayed initialization Factory Resets all LSB4 configurations to those in effect when the unit left the factory Use caution with this parameter it will over write all configurations made using Set Save and Define commands Noboot Forces the LSB4 to remain in the Boot Configuration Program and prevents it from booting from its loadhost Reload Updates the LSB4 s Flash ROM For instructions on reloading F...

Page 63: ...mand will be aborted After the verified password has been accepted the Unlock Password prompt will appear Figure 9 1 Figure 9 1 Lock Command A locked session can be unlocked by doing one of the following Entering the same password used to lock the session at the Unlock Password prompt Entering the Unlock command page 9 6 through a different port Forcibly ending the session with a Logout command pa...

Page 64: ...f all network sessions currently connected to the LSB4 The information will be grouped by protocol Ping This command sends a request for an echo packet to another IP network host Parameters host host is any combination of characters or an IP address Any character string entered must be resolvable to an IP address If an IP address is used it must be in the following format nnn nnn nnn nnn where nnn...

Page 65: ... about all users currently logged into the LSB4 Unlock This command unlocks a previously locked port Parameters port A value between 1 and 4 representing the port number to be unlocked Restrictions This command requires privileged status See Also Set Privileged page 2 5 SHOW USERS UNLOCK PORT port ...

Page 66: ...gin events on the two LAN ports and the serial console port All Resets the counters on all ports Ethernet port Resets the counters on a specified LAN port port A value between 1 and 4 representing the port to be reset Restrictions This command requires privileged status See Also Set Privileged page 2 5 ZERO COUNTERS SYSTEM SWITCH BRIDGE ALL ETHERNET port ...

Page 67: ...Miscellaneous Commands LSB4 Reference Manual 9 8 ...

Page 68: ...re submitting a problem please provide the following information Your name company name address and phone number Product name Unit serial number Software version available by issuing the Show Server command Network configuration including the output from a Netstat command Description of the problem Provide a Debug report stack dump if applicable Product status when the problem occurred Please try ...

Page 69: ...i to notify switches on the network of its exist ence Used to monitor that the root is up and running in addition it enables the switch receiving the packet to monitor the path to the root Bridge A device that moves ÒswitchesÓ packets from one network seg ment to another The LSB4 moves packets according to the scheme described in the IEEE 802 1d bridging specification Broadcast A packet sent out t...

Page 70: ...et the max imum possible forwarding rate is 14880 packets per second Learning State When the Spanning Tree Algorithm is enabled the LSB4 can be in a number of different states During the Learning state the LSB4 collects hardware address information for its internal address table Listening State When the Spanning Tree Algorithm is enabled the LSB4 can be in a number of different states During the L...

Page 71: ...A method used to ensure that there is only one possible path between network segments The Spanning Tree Algorithm is enabled by default on the LSB4 To disable or modify the use of the Spanning Tree Algo rithm refer to Chapter 7 Switch A device that moves ÒswitchesÓ packets from one network segment to another The LSB4 moves packets according to the scheme described in the IEEE 802 1d bridging speci...

Page 72: ...mand 5 2 Counters Show Monitor List System command 2 4 D Define Port command 4 2 Define Protocol command 3 2 Examples 3 4 Define SNMP command 5 2 Define System command 2 2 Examples 2 3 F Filter Save command 8 2 Filter Commands 6 1 Filter lists creating 6 2 Firewalls creating 6 3 I Incoming Set Define System command 2 2 IP IPaddress Set Define Protocol command 3 2 IP Subnet Mask Set Define Protocol...

Page 73: ...Pinouts B 1 RJ45 to DB9 B 3 Port Save command 8 2 Privileged Set Privileged command 2 5 Privileged Password Set Define System command 2 2 P cont Prompt Set Define System command 2 3 Protocol Save command 8 2 R RJ45 B 3 S Save command 8 2 Secondary Loadhost Set Define Protocol command 3 3 Serial cable limits B 3 Set Port command 4 2 Set Privileged command 2 5 Set Protocol command 3 2 Examples 3 4 S...

Page 74: ...Index iii T Telnet Set Define System command 2 2 Type Set Define Port command 4 3 ...

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