Black Box LEV2525A Software User's Manual
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Black Box LEV2525A Software User's Manual

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Web site: www.blackbox.com • E-mail: info@blackbox.com

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  • Page 1 Order toll-free in the U.S. 24 hours, 7 A.M. Monday to midnight Friday: 877-877-BBOX CUSTOMER FREE technical support, 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746 SUPPORT Mail order: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018 INFORMATION Web site: www.blackbox.com • E-mail: info@blackbox.com...
  • Page 2 LE2425A / LEV2525A Switch Software User Guide (MNS-BB)
  • Page 3 Preface Use of This Guide This guide describes how to use the command line interface (CLI) and Web Interface, for LE2425A and LEV2525A Switches. If you need information on a specific command in the CLI, type the command name after you type the word “help” (help <command>...
  • Page 4 MNS-BB Software User Guide FEDERAL COMMUNICATIONS COMMISSION CANADIAN DEPARTMENT OF COMMUNICATIONS RADIO FREQUENCY INTERFERENCE STATEMENTS This equipment generates, uses, and can radiate radio frequency energy and if not installed and used properly, that is, in strict accordance with the manufacturer’s instructions, may cause interference to radio communication.
  • Page 5 MNS-BB Software User Guide Normas Oficiales Mexicanas (NOM) Electrical Safety Statement INSTRUCCIONES DE SEGURIDAD 1. Todas las instrucciones de seguridad y operación deberán ser leídas antes de que el aparato eléctrico sea operado. 2. Las instrucciones de seguridad y operación deberán ser guardadas para referencia futura. 3.
  • Page 6 MNS-BB Software User Guide 18.Servicio por personal calificado deberá ser provisto cuando: A: El cable de poder o el contacto ha sido dañado; u B: Objectos han caído o líquido ha sido derramado dentro del aparato; o C: El aparato ha sido expuesto a la lluvia; o D: El aparato parece no operar normalmente o muestra un cambio en su desempeño;...

  • Page 7: Table Of Contents

    MNS-BB Software User Guide Table of Contents ....................Page GETTING STARTED ............................1 Getting Started with Switch Configuration...................... 1 Software Upgrade ............................1 Recommended Minimal Configuration ......................1 Using the Console Setup Screen ........................1 To Recover from a Lost Manager Password:....................2 CONSOLE MANAGEMENT INTERFACE ....................
  • Page 8 MNS-BB Software User Guide 5.7.3 Zone and Daylight Time Rule....................... 22 CLI: Configuration commands ........................22 5.8.1 To save the configuration........................22 5.8.2 To load or restore the configuration...................... 22 5.8.3 To erase the current configuration ......................23 5.8.4 Summary (Steps)........................... 23 Web: Configuring IP Addressing........................
  • Page 9 MNS-BB Software User Guide 8.10 RMON ................................47 8.10.1 Adding RMON Communities in the Switch ..................47 8.11 Web: Viewing and Configuring SNMP Parameters .................. 47 MONITORING AND ANALYZING SWITCH OPERATION ..............48 Overview ............................... 48 Port Monitoring (Mirroring) Features......................48 9.2.1 CLI: Configuring Port Monitoring......................
  • Page 10 MNS-BB Software User Guide 13.5 Reconfiguring General STP Operation on the Switch................72 13.6 Globally Enabling or Disabling STP......................72 13.7 Changing STP Bridge Parameter Values....................74 13.8 Changing STP Port Parameter Values....................... 75 13.9 How STP Operates ............................ 75 13.10 Web: View and Configure STP Parameters ....................
  • Page 11 23.9 CLI Administrative and Troubleshooting Commands ................. 127 APPENDIX A ................................128 Daylight Savings Time on LE2425A and LEV2525A Switches ................128 List of valid country codes to set daylight settings ....................128 APPENDIX B ................................128 How to Upgrade................................ 128 Upgrade over the Network............................

  • Page 12: Getting Started

    (For Hardware Installation and configuration, please see the user guide for hardware). Software Upgrade If your LE2425A / LEV2525A already has the software then you will get the Login prompt when you boot up the switch, otherwise you will get the Boot prompt and you will have to upgrade the software (For details refer Appendix B) Below is a screen example of the boot prompt.

  • Page 13: To Recover From A Lost Manager Password

    The switch is now configured with a Manager Password, IP address, and subnet mask, and can be accessed through the Console, Telnet, Web or an SNMP-based network management tools. Here is some information about the basic fields. Parameter Default System Name LE2425A/LEV2525A Optional; System Contact techsupport@blackbox.com Optional; Manager Password manager Recommended;...

  • Page 14: Console Management Interface

    USB to serial adapters are also available for laptops or computers that do not have native serial ports Management interfaces enable you to reconfigure the switch and to monitor switch status and performance. The LE2425A and LEV2525A switches offer the following interfaces: •...

  • Page 15: Advantages Of Using The Cli

    LE2425A## Configuration Level Prompt = Product + Model For example, LEV2525 prompt would be LEV2525A> for operator level and LEV2525A# for manager level. • Provides access to the complete set of switch configuration, performance, and diagnostic features. • Enables quick management level access of the detailed system configuration to system operators and administrators experienced in command prompt interfaces.

  • Page 16: Using The Command Line Interface (Cli)

    In the above case, you will enter the CLI at the level corresponding to the user and password combination you provide (operator or manager). Suppose you log onto the CLI at the Manager level, the following prompt will appear: LE2425A#_ LEV2525A#_...

  • Page 17: Operator Privileges

    MNS-BB Software User Guide We strongly recommend that you change both the Manager and the operator password. Note that changing only an Operator password does not prevent access to the Manager level by intruders who have the Manager password. 3.3.1 Operator Privileges At the Operator level you can examine the current configuration and move between interfaces without being able to change the configuration.

  • Page 18: Listing Commands And Command Options

    MNS-BB Software User Guide To Delete User Syntax: delete user=<name> LE2425A(user)##delete user=Raj Confirm User Deletion(Y/N): Y User successfully deleted To modify Password Syntax: passwd user=<name> LE2425A(user)## passwd user=Raj Enter New Password :****** Confirm New Password :****** Password has been modified successfully To modify the Privilege Level Syntax: chlevel user=<name>...

  • Page 19: Displaying Cli "Help

    MNS-BB Software User Guide LE2425A> help Typing ‘help’ at the Manager level produces this listing LE2425A# help 3.5.4 Displaying CLI "Help" CLI Help provides four types of context-sensitive information: • Command list with a brief summary of each command’s purpose. •...

  • Page 20: Displaying Help With All Possibilities

    MNS-BB Software User Guide 3.5.7 Displaying Help with all possibilities. You can display Help for all possible commands and options that are available by pressing the <TAB> key. Syntax: <TAB> Or <Command string> <TAB> Or <First character of the command> <TAB> For example, <TAB>...

  • Page 21: Web Interface

    Description of the web browser interface: Overview window and tabs. Port Utilization and Status displays. Event Log and Event types. General Features The LE2425A and LEV2525A switches include these web browser interface features: Switch Administration: • System information • SNMP/SNMPv3 • User Management •...

  • Page 22: Session With The Switch

    2. Type the IP address (or DNS name) of the switch in the browser Location or Address field and press [Enter]. LE2425A or LEV2525A [Enter] (example of a DNS-type name) 10.11.12.180 [Enter] (example of an IP address) If you are using a Domain Name Server (DNS), your device may have a name associated with it (for example, LE2425A) that you can type in the Location or Address field instead of the IP address.

  • Page 23: User Management

    MNS-BB Software User Guide User Management You may want to create both a username and password to create access security for your switch. There are two levels of access to the interface that can be controlled by setting user names and passwords: Operator: An Operator-level user name and password allows read-only access to most of the web browser interface, but prevents access to the Configuration.

  • Page 24: Status Reporting Features

    If you loose a Password, contact techsupport@blackbox.com Online Help for the LE2425A / LEV2525A Web Browser Interface Online Help is available for the web browser interface. You can use it by clicking on the Help button in the navigation bar of the web browser interface screens. Context-sensitive help is provided with in the Help.

  • Page 25: The Port Statistics

    MNS-BB Software User Guide 4.5.2 The Port Statistics The Port Utilization and Status displays show an overview of the status of the switch and the amount of network activity on each port. The following figure shows a sample reading of the Port Utilization and Port Status.

  • Page 26: The Event Log

    MNS-BB Software User Guide The Port Status indicators show a symbol for each port that indicates the general status of the port. There are four possible states: Port Connected – the port is enabled and is properly connected to an active network device, shows green in color.
  • Page 27 MNS-BB Software User Guide Each alert has the following fields of information: • Date/Time – The date and time the event was received by the web browser interface. This value is shown in the format: DD-MM-YY HH:MM:SS AM/PM, for example, 01-08-2001 7:58:44 AM. •...

  • Page 28: Configuring Ip Addressing, Interface Access, And System Information

    MNS-BB Software User Guide Configuring IP Addressing, Interface Access, and System Information Overview This chapter describes the switch configuration features available in the CLI and web browser interface. For help on how to use these interfaces, refer to: _ Chapter 3, “Using the Command Line Interface (CLI)” _ Chapter 4, Using the Secure Web Browser Interface”...

  • Page 29: Configuring Ip Addressing

    MNS-BB Software User Guide 5.3.3 Configuring IP Addressing 1.DHCP/Bootp requests are automatically broadcast on the local network. (The switch sends one type of request to which either a DHCP or Bootp server can respond.) 2. When a DHCP or Bootp server receives the request, it replies with a previously configured IP address and subnet mask for the switch.

  • Page 30: Globally Assigned Ip Network Addresses

    Bootp to get their IP configuration, you should use a unique symbolic name for each switch. ht is the “hardware type”. For the LE2425A and LEV2525A Managed Switches, set this to ether (for Ethernet). This tag must precede the ha tag. ha is the “hardware address”. Use the switch’s 12-digit MAC address.

  • Page 31: Serial Port (Console)

    E.g. telnet 192.168.1.1 [port is optional]. The default port is 23. We also have the Telnet Client on the LE2425A and LEV2525A. Users can telnet the LE2425A and LEV2525A from the host (Computer or switch) remotely. In other words users can manage the switch remotely.

  • Page 32: System Information

    Network Time Protocol (NTP) used to synchronize device clocks in the Internet. The SNTP client of the LE2425A and LEV2525A has the ability to set the SNTP server IP address. The SNTP client synchronizes the time and date with the SNTP server.

  • Page 33: Time Zone

    Syntax: set timezone GMT=[+ or -] hour=<0-14> min=<0-59> set timeformat format=<12|24> set daylight country=< country name> Note: For more details please read Appendix A. CLI: Configuration commands The LE2425A and LEV2525A have the following CLI commands available for configuration management. • Saveconf •...

  • Page 34: To Erase The Current Configuration

    IP addressing. However, to realize the full performance capabilities LE2425A and LEV2525A networking offers through the switch, configure the switch with an IP address and subnet mask compatible with your network. The following table lists the general features available only with a network-compatible IP address configured.

  • Page 35: Security Features

    MNS-BB Software User Guide Security Features Manager and Operator passwords: You can gain access and privileges for the command line through either the console port or through the network by using Telnet . The features described in this chapter enhance security controls against unauthorized access through the network.

  • Page 36: Basic Operation

    (ACL). An ACL is a packet filtering mechanism that reads a packet and allows it to pass or discards it according to criteria set up by the system administrator LE2425A and LEV2525A switches support the source MAC filtration in Port Security module.
  • Page 37 MNS-BB Software User Guide There are two ways to add authorized MAC addresses: Manual (CLI: allow) or Automatic (CLI: learn). Syntax: allow mac=<address|list|range> port=<num|list|range> To simply add a device (MAC address) to a port’s existing Authorized Addresses list, enter the port number with the mac-address parameter and the device’s MAC address.

  • Page 38: Reading Intrusion Alerts And Resetting Alert Flags

    MNS-BB Software User Guide 22 Drop Enable None 23 Disable Enable 00:e0:29:6c:a4:fd 24 Drop Enable None 25 None None Disable None Removing a Device from the “Authorized” List for a Port. This command option removes unwanted devices (MAC addresses) from the Authorized Addresses list.

  • Page 39: Web: Viewing And Configuring Port Security

    LE2425A and LEV2525A switches provide remote management through Telnet and Web in clear text. In other words, Telnet protocol negotiations as well as HTML over HTTP protocol negotiations that are sent to and from the LE2425A and LEV2525A switches are not encrypted and are vulnerable to attacks from malicious sources.
  • Page 40 MNS-BB Software User Guide SSL protocol is a security protocol that provides communications privacy over the Internet. The protocol allows client/server applications to communicate in a way that is designed to prevent eavesdropping, tampering, or message forgery. The primary goal of the SSL Protocol is to provide privacy and reliability between two communicating applications.

  • Page 41: Ciphers Used With Ssl

    MNS-BB Software User Guide • Use public-key encryption techniques to generate shared secrets. • Establish an encrypted SSL connection. 6.10.2 Ciphers Used with SSL The SSL protocol supports the use of a variety of different cryptographic algorithms, or ciphers, for use in operations such as authenticating the server and client to each other, transmitting certificates, and establishing session keys.
  • Page 42 MNS-BB Software User Guide LE2425A(access)## Syntax: ssl <enable|disable> LE2425A(access)## ssl enable SSL is enabled. To see the status of SSL and Web Syntax: show ssl LE2425A# show ssl SSL/TLS is enabled. Syntax: show web LE2425A# show web HTTP is enabled. Current HTTP type is secure.

  • Page 43: Using Authorized Ip Managers To Protect Against Unauthorized Access

    MNS-BB Software User Guide Using Authorized IP Managers to Protect Against Unauthorized Access Authorized IP Manager Features This feature enables you to enhance security on the switch by using IP addresses to authorize which stations (PCs or workstations) can access the switch. Thus, having the correct passwords is not sufficient for accessing the switch through the network unless the station attempting access is also included in the switch’s Authorized IP Managers configuration.

  • Page 44: Cli: Viewing And Configuring Authorized Ip Managers

    MNS-BB Software User Guide CLI: Viewing and Configuring Authorized IP Managers Listing the Switch’s Current Authorized IP Manager(s) Use the show ip-access command to list IP stations authorized to access the switch. For example: Example of the Show IP Authorized-Manager Display The above example shows an Authorized IP Manager List that allows stations to access the switch for a specific service.

  • Page 45: Configuring One Station Per Authorized Manager Ip Entry

    MNS-BB Software User Guide 7.5.1 Configuring One Station Per Authorized Manager IP Entry This is the easiest way to apply a mask. If you have ten or fewer management and/or operator stations, you can configure them quickly by simply adding the address of each to the Authorized Manager IP list with 255.255.255.255 for the corresponding mask.

  • Page 46: Operating And Troubleshooting Notes

    MNS-BB Software User Guide Operating and Troubleshooting Notes: 7.6.1 Network Security Precautions: You can enhance your network’s security by keeping physical access to the switch restricted to authorized personnel, using the password features built into the switch, and preventing unauthorized access to data on your management stations.

  • Page 47: Snmp: Configuration For Network Management Applications

    SNMP v1, v2 and v3 LE2425A and LEV2525A switches support all three versions of SNMP viz SNMP v1, v2 and v3. User can switch between version 1 and version 3. (For details, please read section: SNMPv3) Note: SNMPv3 supports all three versions.

  • Page 48: Snmp Management Features

    Go to SNMP configuration mode. (i.e., LE2425A(SNMP)##) LE2425A# snmp <enter> LE2425A(SNMP)## Syntax: mgrip <add|delete> ip=<ipaddress> Note: If SNMP console is not added to the LE2425A and LEV2525A switch, then user will not be able to access the SNMP agent. -37-...

  • Page 49: Cli: Viewing And Configuring Community Names

    MNS-BB Software User Guide To configure and add the appropriate traps please see the CLI section of this chapter. CLI: Viewing and Configuring Community Names 8.6.1 Listing Community Names This command lists the data for currently configured SNMP community names. Syntax: show snmp LE2425A# show snmp This example lists the data for all communities in a switch;...

  • Page 50: Using The Cli To List Current Snmp Trap Receivers

    MNS-BB Software User Guide Using the CLI To List Current SNMP Trap Receivers This command lists the currently configured trap receivers along with the current SNMP community name data. Syntax: show snmp In the next example, the show snmp command shows that the switch has been previously configured to send SNMP traps to management stations belonging to the “public”...

  • Page 51: Benefits

    MNS-BB Software User Guide authNoPriv Provides authentication based on the HMAC-MD5 or HMAC-SHA algorithms. authPriv Provides authentication based on the HMAC-MD5 or HMAC-SHA algorithms. Provides DES 56-bit encryption in addition to authentication based on the CBC-DES (DES-56) stand Note the following about SNMPv3 objects: •...

  • Page 52: Supported Mibs And Rfcs

    MNS-BB Software User Guide privacy---An encrypted state of the contents of an SNMP packet where they are prevented from being disclosed on a network. Encryption is performed with an algorithm called CBC-DES (DES-56). read view---A view name (not to exceed 64 characters) for each group that defines the list of object identifiers (OIDs) that are accessible for reading by users belonging to the group.

  • Page 53: Cli

    8.9.4 Syntax: set snmp type=<v1|all> This command lets the user choose which SNMP version the LE2425A and LEV2525A SNMP agent support. If the value is “v1”, the agent will only support SNMPv1 access. If “all”, the agent supports v1, v2c and v3 SNMP accesses.
  • Page 54 VACM (view-based access control model). This allows any manager station to access the LE2425A and LEV2525A switch. Either via v1, v2c or v3 models. The community name is “public”. This command is only intended for first time users and may be changed by administrators who want more strict access.
  • Page 55 MNS-BB Software User Guide This shows the current value of default trap. LE2425A(snmpv3)##show-deftrap Default Trap Community : public Syntax: trap <add|delete> id=<id> [type=<v1|v2|inform>] [host=<host-ip>] [community=<string>] [port=<1-65534>] This command is used to define the trap and inform manager stations. The station can receive v1, v2 traps and/or inform notifications.
  • Page 56 MNS-BB Software User Guide Syntax: group <add|delete> id=<id> [groupname=<name>] [model=<v1|v2c|usm>] [com2secid=<com2sec-id>] This command is part of the VACM. This directive defines the mapping from sec model/sec name to group. A sec model is one of v1, v2c, or usm. User can specify up to 10 entries. LE2425A(snmpv3)##group add id=1 groupname=v1 model=v1 com2secid=1 Entry is added successfully Syntax: show-group [id=<id>]...
  • Page 57 MNS-BB Software User Guide 3 -- 4 -- 5 -- 6 -- 7 -- 8 -- 9 -- 10 -- LE2425A(snmpv3)##show-view id=1 View ID View Name : all Type : included Subtree : .1 Mask : ff Syntax: access <add|delete> id=<id> [accessname=<name>] [model=<v1|v2c|usm|any>] [level=<noauth|auth|priv>] [read=<none|view-id>] [write=<none|view-id>] [notify=<none|view-id>] [context=<none|context-string>] [prefix=<exact|prefix>]...

  • Page 58: Rmon

    The switch supports RMON (Remote Monitoring) on all connected network segments. This allows for troubleshooting and optimizing your network. The LE2425A and LEV2525A switches provide the hardware-based RMON counters in the switch chipset. The switch manager CPU polls these counters periodically to collect the statistics in a format that compiles with the RMON MIB definition.

  • Page 59: Monitoring And Analyzing Switch Operation

    You can modify community names, add SNMP manager station or add trap station from this menu. Monitoring and Analyzing Switch Operation Overview The LE2425A and LEV2525A Switches have several built-in tools for monitoring, analyzing, and troubleshooting switch and network operations: Status: Includes options for displaying general Switch information, management address data, and MAC addresses.

  • Page 60: Limitation

    MNS-BB Software User Guide LE2425A(port-mirror)## prtmr enable Port Mirroring Enabled LE2425A(port-mirror)## prtmr disable Port Mirroring Disabled Note: Port Mirroring cannot be enabled until or unless user assigns the monitor and sniffer ports. Limitation • One port can monitor at a time. •...

  • Page 61: Optimizing Port Usage

    MNS-BB Software User Guide 10.0 Optimizing Port Usage 10.1 Overview This chapter includes: • Configuring port, status, mode (speed and duplex), and flow control parameters. • Configuration screens corresponding to the port numbers on the front of the switch. 10.2 CLI: Viewing Port Status and Configuring Port Parameters From the CLI commands, you can configure and view all port parameter settings and view all port status indicators.

  • Page 62: Port Status And Configuration Commands

    MNS-BB Software User Guide To see what the switch negotiated for the Auto setting, use the CLI show port command. 1000Fdx: 1000 Mbps (1Gbps), Full-Duplex only 100Fdx: 100 Mbps, Full-Duplex Notes: • To change the port speed on a transceiver port you are required to reboot the switch.

  • Page 63: Using The Cli To Configure Ports

    MNS-BB Software User Guide Syntax: show port=<Port number>: Lists the status of the specific port. LE2425A# show port=2 10.2.4 Using the CLI to Configure Ports You can configure one or more of the following port parameters under device module. LE2425A#device <enter> LE2425A(device)## For details on each option, see Table above.

  • Page 64: Web: Viewing Port Status And Configuring Port Parameters

    10.4 Broadcast Storm Protection One of the best features of the LE2425A and LEV2525A switches is its ability to keep broadcast storms from spreading throughout a network. Network storms are characterized by an excessive number of broadcast packets being sent over the network. These storms can occur if network equipment is configured incorrectly, network software is not properly functioning, or poorly designed programs (including some network games) are used.
  • Page 65 MNS-BB Software User Guide ============================================================= PORT | STATUS | THRESHOLD (frms/sec) | CURR RATE (frms/sec) | ACTIVE ============================================================= 1 Enabled 4294967295 2 Enabled 4294967295 3 Enabled 4294967295 4 Enabled 4294967295 5 Enabled 4294967295 6 Enabled 4294967295 7 Enabled 4294967295 8 Enabled 4294967295 9 Enabled 4294967295...

  • Page 66: Qos (Quality Of Service)

    QoS was designed to address this problem. The 802.1p standard outlines eight levels of priority, 0 to 7, with 0 the lowest priority and 7 the highest. The LE2425A and LEV2525A switches have two priority queues, 1 (low) and 0 (high). When a tagged packet enters a switch port, the switch responds by placing the packet into one of the two queues 11.3...

  • Page 67: Pq: Priority Queuing

    Packets that are not classified by this priority list mechanism fall into the normal queue. Note: LE2425A and LEV2525A Switches support two priority queues, 1 (low) and 0 (high) During transmission, the algorithm gives higher-priority queues absolute preferential treatment over low-priority queues.

  • Page 68: Qos On Ethernet

    QoS on Ethernet The LE2425A and LEV2525A Switches have the capability to provide QoS at Layer 2. At Layer 2, the frame uses type of service (ToS) as specified in IEEE 802.1p . ToS uses 3 bits, just like IP precedence, and maps well from Layer 2 to layer 3, and vice versa.
  • Page 69 MNS-BB Software User Guide will be the same weight across the switch. The valid value for weight is 0-7. Syntax: set-weight weight=<0-7> Note A weight is a number calculated from the IP precedence setting for a packet in flow. This weight is used in an algorithm to determine when the packet will be serviced.

  • Page 70: To Tag Untagged Packets

    MNS-BB Software User Guide LE2425A(qos)##show qos To see the QoS type LE2425A(qos)##show qos type=port To set QoS type Tag, This command will set the bits making tag levels 0, 4 and 7 high priority. LE2425A(qos)##setqos type=tag port=6-10 tag=0,4,7 priority=high To show the tag level (0-7) LE2425A(qos)##show qos type=tag Note: The default setting for traffic class is the low priority queue.

  • Page 71: Web: Configure Qos

    MNS-BB Software User Guide Syntax: set-untag port=<port|list|range> priority=<high|low> tag=<0-7> 11.10 Web: Configure QoS In the web browser interface: 1. Click on the [Configuration] 2. Click on [QoS]. 3. Click on [Modify]. 4. After you make the desired changes, click on [OK] button. 5.

  • Page 72: Purpose

    MNS-BB Software User Guide Group Management Protocol controls). In the factory default state (IGMP disabled), the switch forwards all IGMP traffic to all ports, which can cause unnecessary bandwidth usage on ports not belonging to multicast groups. Enabling IGMP allows the ports to detect IGMP queries, report packets and manage IP multicast traffic through the switch.

  • Page 73: How Igmp Operates

    IP manages multicast traffic by using switches, multicast routers, and hosts that support IGMP. (In the LE2425A and LEV2525A Switches implementation of IGMP, a multicast router is not necessary as long as a switch is configured to support IGMP with the querier feature enabled.) A set...
  • Page 74 MNS-BB Software User Guide Figure: The Advantage of Using IGMP The next figure (below) shows a network running IP multicasting using IGMP without a multicast router. In this case, the IGMP-configured switch runs as a querier. PCs 2, 5, and 6 are members of the same IP multicast group. IGMP is configured on switches 3 and 4. Either of these switches can operate as querier because a multicast router is not present on the network.

  • Page 75: Ip Multicast Filters

    The difference between Version 1 and Version 2 is that version 1 does not have a “Leave” mechanism for the host. LE2425A and LEV2525A do support pruning when there is a leave message or a time expires on a port, they prune the multicast group membership on that port.

  • Page 76: 12.11.2 Showing Igmp Configuration

    MNS-BB Software User Guide 12.11.2 Showing IGMP Configuration To show current IGMP operation, use the command “show igmp” available globally in the command line. For example: LE2425A#show igmp IGMP State shows if IGMP is turned on (Enable) or off (Disable). Immediate Leave provides a mechanism for a particular host that wants to leave a multicast group.

  • Page 77: 12.11.6 Enable/Disable Switch As Querier

    MNS-BB Software User Guide LE2425A(igmp)##show igmp IGMP State : Enabled ImmediateLeave : Enabled Querier : Enabled Querier Interval : 125 Querier Response Interval : 10 LE2425A(igmp)##set-leave disable IGMP immediate leave status is disabled LE2425A(igmp)##show igmp IGMP State : Enabled ImmediateLeave : Disabled Querier : Enabled...

  • Page 78: Setting The Query Response Interval

    MNS-BB Software User Guide LE2425A(igmp)##show igmp IGMP State : Enabled ImmediateLeave : Disabled Querier : Disabled Querier Interval : 127 Querier Response Interval : 10 12.13 Setting the Query Response Interval The query response interval is the maximum amount of time that can elapse between when the querier router sends a host-query message and when it receives a response from a host.

  • Page 79: Web: Configure And View

    MNS-BB Software User Guide Syntax: show-port LE2425A(igmp)## show-port Note: The default mode is Auto. 12.15 Web: Configure and View In the web browser interface: 1. Click on the [Configuration]. 2. Click on [IGMP]. 3. Click on [Information]. 4. Click on [Modify] button. 5.

  • Page 80: Spanning Tree Protocol (Stp)

    (It is recommended that you enable STP on all switches belonging to a loop topology.) As recommended in the IEEE 802.1Q VLAN standard, the LE2425A and LEV2525A Switches use single-instance STP. This means a single spanning tree is created to make sure there are no network loops associated with any of the connections to the switch.

  • Page 81: Explaining Parameters In Detail

    MNS-BB Software User Guide 13.3.1 Explaining Parameters in Detail The following parameters are explained in detail. Spanning Tree Enabled(Global): This field indicates whether STP is enabled or disabled globally i.e. if the values is YES, all ports have STP enabled, otherwise, all ports have STP disabled. Spanning Tree Enabled(Ports): This field indicates which ports have STP enabled.

  • Page 82: Enabling Or Disabling Stp

    MNS-BB Software User Guide The command above outputs the result in tabular format. The explanation of each column in the table is shown below: Port#: This field indicates the port number. Value ranges from 01 to max number of ports in the switch.

  • Page 83: Reconfiguring General Stp Operation On The Switch

    MNS-BB Software User Guide 13.5 Reconfiguring General STP Operation on the Switch. This command enables STP (if it is not already enabled) and configures one or more of the following parameters: General STP Operating Parameters Name Default Range Function priority 32768 0 - 65535 Specifies the priority value used...
  • Page 84 MNS-BB Software User Guide LE2425A(stp)##stp enable Successfully set the STP status LE2425A(stp)##show stp config STP Configuration: Spanning Tree Enabled(Global) :YES Spanning Tree Enabled(Ports) :YES, 1,2,3,4,5,6,7,8 Bridge Priority :32768 Bridge Forward Delay Bridge Hello Time Bridge Max Age Root Port Root Path Cost :100 Designated Root :80:00:00:01:96:ed:a7:80...

  • Page 85: Changing Stp Bridge Parameter Values

    MNS-BB Software User Guide Bridge Max Age Root Port Root Path Cost :100 Designated Root :80:00:00:01:96:ed:a7:80 Designated Root Priority :32768 Root Bridge Forward Delay Root Bridge Hello Time Root Bridge Max Age LE2425A(stp)## 13.7 Changing STP Bridge Parameter Values To change bridge priority parameters, the user must be in STP CLI context. Using the command priority value=<0-65535>.

  • Page 86: Changing Stp Port Parameter Values

    MNS-BB Software User Guide 13.8 Changing STP Port Parameter Values To change the STP port priority, use the command priority port=<number|list|range> value=<0- 255> under the STP CLI context. LE2425A(stp)##show stp ports STP Port Configuration: ----------------------------------------------------------------------------------------------- Port# Type Priority Path Cost State Des. Bridge Des.

  • Page 87: Rapid Spanning Tree Protocol (Rstp)

    MNS-BB Software User Guide 14.0 Rapid Spanning Tree Protocol (RSTP) Rapid Spanning Tree Protocol (RSTP) (IEEE 802.1w) is an evolution of the Spanning Tree Protocol (STP) (802.1D standard) and provides for faster spanning tree convergence after a topology change. Use spanning tree protocol to ensure that only one active path at a time exists between any two nodes on the network.

  • Page 88: Spanning Tree Options: Rstp (802.1W) And Stp (802.1D)

    MNS-BB Software User Guide participate in frame transfer. In a network of RSTP bridges the time spent in this state is usually quite short. RSTP bridges operating in STP compatibility mode will spend 6 to 40 seconds in this state. After ‘learning’...

  • Page 89: Cli

    MNS-BB Software User Guide Syntax: rstp enable 4. Set the “point-to-point” value to off on all ports that are connected to shared LAN segments (that is, to connections to hubs). The default value is auto. Syntax: port port=<number|list|range> p2p= off 5.
  • Page 90 MNS-BB Software User Guide Go to RSTP configuration mode to configure RSTP. Syntax: rstp <enter> LE2425A#rstp <enter> LE2425A(rstp)## To Enable RSTP (Global) Syntax: rstp <enable | disable> LE2425A(rstp)## rstp enable This command enables or disables the RSTP globally. To Enable RSTP (Per Port Basis) Syntax: port port=<number|list|range>...

  • Page 91: Reconfiguring Per-Port Spanning Tree Values

    MNS-BB Software User Guide Syntax: priority [port=<number|list|range>] value=<0-255 / 0-65535> This command sets the priority to the port(s). Syntax: timers forward-delay=<4-30> hello=<1-10> age=<6-40> forward-delay - set forward time delay (4-30 seconds) hello - set hello timer (1-10 seconds) - set age (6-40 seconds) Syntax: show-timers This command shows the current timer settings LE2425A(rstp)##show-timers...
  • Page 92 MNS-BB Software User Guide Please see the Note on Path Cost on page 14-15 for information on compatibility with devices running 802.1D STP for the path cost values. point-to-point(p2p) Auto This parameter is used to tell the port if it is connected to a point-to-point link . Default parameter is auto and the switch will automatically set the force-false value on all ports that it detects are not running at full duplex.

  • Page 93: Port-Based Virtual Lans (Static Vlans)

    VID (which is always “1”). Although you can remove all ports from the default VLAN, this VLAN is always present. The LE2425A and LEV2525A Switches Port Based VLAN operate by restricting the broadcast and multicast traffic between the ports. A packet with a broadcast address or with an unknown destination address is forwarded only to ports that share VLAN membership with the source port.

  • Page 94: Cli: Configuring Vlan Parameters

    VLAN names, and then assigning one or more ports to each VLAN. (The switch accepts a maximum of 32 VLANs, including the default VLAN ). NOTE: LE2425A and LEV2525A support one type of VLAN at a time. The user has to set the VLAN type before configuration.

  • Page 95: Displaying The Configuration For A Particular Vlan

    MNS-BB Software User Guide DOWN DOWN 25 | DOWN VLAN ID Name : Engg Status : Active ======================== PORT | STATUS ======================== 10 | DOWN 11 | DOWN 12 | DOWN 13 | DOWN 14 | DOWN 15 | DOWN 16 | DOWN 17 |...

  • Page 96: Effect Of Vlans On Other Switch Features

    VLAN. • The LE2425A and LEV2525A switches support port based VLANs. Each port is configured to be member of one or more VLANs. A port can communicate with another port only if both the ports share membership in the same VLAN. A specific port can be a member of more than one VLAN.

  • Page 97: Tag Based Vlan

    MNS-BB Software User Guide 2. Click on [VLAN]. 3. Click on desired VLAN, Port or Tag. 4. Click on [Add/Delete] button. 5. After you make the desired changes, click on [OK] button. 6. Click [Save] to save the configuration. For web-based Help on how to use the web browser interface screen, click on the [Help] button provided on the web browser screen.

  • Page 98: Vlan Tagging Information

    VLAN identification number (VLAN ID, or VID) assigned to a VLAN at the time that you configure the VLAN name in the switch. In the LE2425A and LEV2525A switches, the tag can be any number from 1 to 4095 that is not already assigned to a VLAN. When you subsequently assign a port to a given VLAN, you must implement the VLAN tag (VID) if the port will carry traffic for more than one VLAN.

  • Page 99: Rules Of Tag Vlan Operation

    MNS-BB Software User Guide In switch Y: • VLANs assigned to ports Y1 - Y4 can all be untagged if there is only one VLAN assignment per port. Devices connected to these single VLAN ports do not have to be 802.1Q-compliant. •...

  • Page 100: Cli

    For each port on which a frame is to be transmitted, if that port is not tagged for the VLAN that is associated with the frame, transmit the frame as an untagged frame 16.4 LE2425A and LEV2525A Switches support one type of VLAN at a time. The user has to set the VLAN type before configuration. LE2425A# set vlan type=<port|tag|none>...

  • Page 101: New Cli

    MNS-BB Software User Guide Note: Starting VLAN(s) will put them in active state. To stop a VLAN use the following command: LE2425A(tag-vlan)##stop vlan=<all|name|number|list|range> where, vlan is the name or VLAN ID which is to be stopped. This field also accepts range of VLAN ID values. To stop all the ‘active’ VLAN’s, use ‘all’ instead of VLAN ID’s or VLAN name.

  • Page 102: Web: View And Configure Tag-Vlan Parameters

    MNS-BB Software User Guide Usage: set-port port=<number|list|range> default id=<number> set-port port=<number|list|range> filter status=<enable|disable> set-port port=<number|list|range> tagging id=<number> status=<tagged|untagged> set-port port=<number|list|range> join id=<number> set-port port=<number|list|range> leave id=<number> Note: The old commands will still work, but it will give a message that it is deprecated. set-port port=<port>...

  • Page 103: Gvrp

    MNS-BB Software User Guide 3. Click on [Tag-Based]. 4. Click on [Add] to add Vlan. 5. Enter Vlan ID, Vlan Name and select Port Members. 6. After you make the desired changes, click on [OK] button. 7. Click [Save] to save the configuration. Similarly, You can delete the Vlan.

  • Page 104: General Operation

    (DEFAULT_VLAN; VID = 1), which is automatically enabled and configured as untagged on every port of the LE2425A and LEV2525A switches). That is, on ports used for GVRP links, leave the default VLAN set to Untagged and configure other static VLANs on the same ports as either Tagged, Forbid.
  • Page 105 MNS-BB Software User Guide Note that if a static VLAN is configured on at least one port of a switch, and that port has established a link with another device, then all other ports of that switch will send advertisements for that VLAN. For example, in the following figure, Tagged VLAN ports on switch “A”...

  • Page 106: Per-Port Options For Handling Gvrp "Unknown Vlans

    MNS-BB Software User Guide 17.3 Per-Port Options for Handling GVRP “Unknown VLANs” An “unknown VLAN” is a VLAN that the switch learns of by GVRP. For example, suppose that port 1 on switch “A” is connected to port 5 on switch “C”. Because switch “A” has VLAN 22 statically configured, while switch “C”...

  • Page 107: Gvrp And Vlan Access Control

    MNS-BB Software User Guide As the above table indicates, when you enable GVRP, a port that has a Tagged or Untagged static VLAN has the option for both generating advertisements and dynamically joining other VLANs. Note: In the table, above, the Unknown VLAN parameters are configured on a per interface basis using the CLI.

  • Page 108: Planning For Gvrp Operation

    MNS-BB Software User Guide For example, suppose a dynamic VLAN with a VID of 10 exists on the switch. The following command converts the VLAN to a static VLAN. LE2425A(gvrp)# static vlan=10 Once dynamic Vlan converted into static, it needs to configure as a normal static Vlan. LE2425A(gvrp)# show-vlan 17.7 Planning for GVRP Operation...

  • Page 109: Displaying The Static And Dynamic Vlans Active On The Switch

    MNS-BB Software User Guide 17.10 Displaying the Static and Dynamic VLANs Active on the Switch. The show-vlan command lists all VLANs present in the switch. Syntax: show-vlan Specify the individual ports to handle advertisements To set the state of the port Syntax: set-ports port=<port|list|range>...

  • Page 110: Web: View And Configure Gvrp Parameters

    MNS-BB Software User Guide advertising devices. Similarly, the switch advertises its static VLANs to other GVRP-aware devices. A GVRP-enabled switch does not advertise any GVRP-learned VLANs out of the port(s) on which it originally learned of those VLANs. 17.12 Web: View and Configure GVRP Parameters In the web browser interface: 1.

  • Page 111: Link-Loss Learn Feature

    18.0 Link-Loss Learn Feature The Link-Loss Learn is a unique feature of the LE2425A and LEV2525A switches. When the link is lost on any port on which this function is enabled, the address table is reset and the address learning process is re-initiated.

  • Page 112: Alarm Relay System

    19.0 Alarm Relay System The LE2425A and LEV2525A switches have a software (optional) controlled relay contact that can be use to report alarm conditions. The relay is held open in normal circumstances and will go to close position during alarm conditions.

  • Page 113: Web: View And Configure Alarms

    MNS-BB Software User Guide alarm <enable/disable>: This command globally enables or disables the alarm action. Syntax: alarm <enable|disable> LE2425A(alarm)## alarm enable Alarm system Enabled period time: This command sets the duration of relay action for the momentary type signal. Syntax: period time=<1..10> LE2425A(alarm)## period time=5 Relay closure Time Set Show alarm: It displays the current status of Alarm system.

  • Page 114: Smtp (Simple Mail Transfer Protocol)

    SMTP are in Request for Comments 821 of the Internet Engineering Task Force (IETF). In LE2425A and LEV2525A switches, SMTP is used to send email alerts whenever there is an event or an SNMP trap generated inside the switch system.
  • Page 115 MNS-BB Software User Guide LE2425A(smtp)##show smtp config LE2425A(smtp)##show smtp recipients Syntax: add id=<1-5> email=<email-addr> [traps=<all|none|S|R|E>] [events=<all|none|I|A|C|F|D>] [ip=<ip-addr>] [port=<1-65535>] id – [mandatory] the recipient ID range from 1 to 5. Five is the maximum number of recipients. email – [mandatory] this is the email address of the recipient traps –...

  • Page 116: Web: View And Configure Smtp Relay

    Here is an example of email alert: THIS IS A GENERATED E-MAIL ALERT COMING FROM AN LE2425A and LEV2525A SWITCH! PLEASE DO NOT REPLY! An event was detected on LE2425A or LEV2525A switch 192.168.1.150, the event description shown below: Event Code : 80 Source : CLI Date &...

  • Page 117: Port Based Network Access Control

    MNS-BB Software User Guide 21.0 802.1x - Port Based Network Access Control The Radius (Remote Authentication Dial-In User Service) Protocol 21.1 Introduction The IEEE 802.1x standard, Port Based Network Access Control, defines a mechanism for port-based network access control that makes use of the physical access characteristics of IEEE 802 LAN infrastructure.

  • Page 118: Protocol Operation

    MNS-BB Software User Guide 21.3 Protocol Operation Communication between a supplicant and authenticator is via EAPOL (EAP over LAN). Authenticator and authentication server communicate using EAP over RADIUS. The ff. illustrations show the protocol involved between 802.1x entities. Figure 2. 802.1x Protocol EAP, short for Extensible Authentication Protocol, is an authentication framework which supports multiple authentication methods.

  • Page 119: Cli

    MNS-BB Software User Guide 2. The authenticator (Bridge/switch), upon receiving an EAPOL-start frame, sends a response with an EAP-Request/Identity frame back to the supplicant. This will inform the supplicant to give its identity. 3. The supplicant will then send back its own ID using an EAP-Response/Identity frame to the authenticator.
  • Page 120 -- Port not available auth <enable|disable>: This command globally enables or disables the 802.1x authenticator function on MLE2425A and LEV2525A switch. LE2425A(auth)##auth enable 802.1X Authenticator is enabled. Note: Before enable the 802.1x authenticator you must provide the Radius Server information and Force authorize the port connected to the Server using setport command.
  • Page 121 MNS-BB Software User Guide LE2425A(auth)##show auth ports Port Status Control Initialize Current State ================================================================ Enabled Auto Deasserted Authorized Enabled ForcedAuth Asserted Unauthorized Enabled Auto Deasserted Authorized Enabled Auto Deasserted Unauthorized Enabled Auto Deasserted Unauthorized Enabled Auto Deasserted Unauthorized Enabled Auto Deasserted Unauthorized Enabled...
  • Page 122 MNS-BB Software User Guide Syntax: backend port=<num|list|range> supptimeout=<1-240>] [servertimeout=<1-240>] [maxreq=<1-10>] port – [mandatory] – ports to be configured supptimeout – [optional] This is the timeout in seconds the authenticator waits for the supplicant to respond back. Default value is 30 seconds. Values can range from 1 to 240 seconds. servertimeout –...
  • Page 123 MNS-BB Software User Guide maxreauth – [optional] The number of re-authentication attempts that are permitted before the Port becomes Unauthorized. Default value is 2. Values can range from 0 to 10. transmit – [optional] This is the transmit period, this is the time in seconds the authenticator waits to transmit another request for identification from the supplicant.
  • Page 124 MNS-BB Software User Guide ================================================= Enabled 3600 Enabled Enabled 3600 Enabled 3600 Enabled 3600 Enabled 3600 Enabled 3600 Enabled 3600 Enabled 3600 Enabled 3600 Enabled 3600 Enabled 3600 Enabled 3600 Enabled 3600 Enabled 3600 Enabled 3600 Enabled 3600 Enabled 3600 -- Port not available setport: This command configures authentication port control.
  • Page 125 MNS-BB Software User Guide Enabled Auto Deasserted Unauthorized Enabled Auto Deasserted Unauthorized Enabled Auto Deasserted Unauthorized Enabled Auto Deasserted Unauthorized Enabled Auto Deasserted Unauthorized Enabled Auto Deasserted Unauthorized Enabled Auto Deasserted Unauthorized Enabled Auto Deasserted Unauthorized Enabled Auto Deasserted Unauthorized Enabled Auto Deasserted...
  • Page 126 MNS-BB Software User Guide -- Port not available LE2425A(auth)##show-port backend Port Supp Timeout Server Timeout Max Request (sec) (sec) ================================================= -- Port not available LE2425A(auth)##show-port reauth Port Reauth Status Reauth Period (sec) ================================================= Enabled 3600 Enabled Enabled 3600 Enabled 3600 Enabled 3600 Enabled...

  • Page 127: Web: View And Configure 802.1X

    MNS-BB Software User Guide Enabled 3600 -- Port not available show-stats: This commands displays per-port authentication statistics. Syntax: show-stats port=<num> LE2425A(auth)##show-stats port=3 Port 3 Authentication Counters authEntersConnecting authEapLogoffsWhileConnecting authEntersAuthenticating authAuthSuccessesWhileAuthenticating authAuthTimeoutsWhileAuthenticating authAuthFailWhileAuthenticating authAuthReauthsWhileAuthenticating authAuthEapStartsWhileAuthenticating authAuthEapLogoffWhileAuthenticating authAuthReauthsWhileAuthenticated authAuthEapStartsWhileAuthenticated authAuthEapLogoffWhileAuthenticated backendResponses backendAccessChallenges backendOtherRequestsToSupplicant backendNonNakResponsesFromSupplicant backendAuthSuccesses...

  • Page 128: Tacacs+ (Terminal Access Controller Access Control System)

    The protocol allows the TACACS+ client to request very fine-grained access control and allows the daemon to respond to each component of that request. The LE2425A and LEV2525A switches implement a TACACS+ client that integrates neatly with its local access control.
  • Page 129 In the networked picture above, two LE2425A or LEV2525A switches are configured to connect to two TACACS+ servers in the network. Note: Each LE2425A or LEV2525A switches can be configured to connect to up to five TACACS+ servers. Whether through serial console or telnet, a user is authenticated following the flow diagram below.
  • Page 130 MNS-BB Software User Guide START Logout State Login State as Operator User inputs name and password Is User Manager? Is User in Local User List? Login State as Manager Logout State TACACS+ Enabled? Authenticate Failure or Connection Failure Connect to TACACS Logout State Server and Authenticate Authenticated...

  • Page 131: Packet Encryption

    TACACS+ packets are not readable even if network sniffers are employed. Packet data are hashed and shared using MD5 and secret string. Both LE2425A or LEV2525A and the TACACS+ Server must know this secret string to exchange packets. Protocol Structure - TACACS and TACACS+...

  • Page 132: Web: View And Configure 802.1X

    MNS-BB Software User Guide <enable|disable> – [mandatory] Enables or disables TACACS+. LE2425A(user)##tacplus enable TACACS+ is enabled. LE2425A(user)##tacplus disable TACACS+ Tunneling is disabled. Tacserver: This command adds or deletes a TACACS+ server in the list. Syntax: tacserver <add|delete> id=<num> [ip=<ip-addr>] [port=<tcp-port>] [encrypt=<enable|disable>] [key=<string>] <add|delete>...

  • Page 133: Troubleshooting

    Ping test • Command prompt • Restoring the factory default configuration For information on support and warranty provisions, see the LE2425A / LEV2525A Switches User Manual 23.2 Troubleshooting Approaches Use these approaches to diagnose Switch problems: • Check the Switch LEDs for indications of proper Switch operation: •...

  • Page 134: General Problems

    MNS-BB Software User Guide A topology loop can also cause excessive network activity. The event log messages can be indicative of this type of problem. Please see ‘Using the Event Log to Identify Problem Sources’ section of this chapter for more details. 23.5 General Problems If you experience problems such as “the network runs slow;...
  • Page 135 MNS-BB Software User Guide The output can be filtered with the help of “Show Commands”. E.g., Type Syntax: show log informational where “informational” is the <option> will show only informational log entries. ---------------------------------------------------------------------------------------------- Severity Date Time Log Description ---------------------------------------------------------------------------------------------- 21-09-2001 11:18:18 AM Rajesh Rajesh is now on line 21-09-2001 11:18:18 AM Server1 network enabled on 192.168.1.16...
  • Page 136 MNS-BB Software User Guide SNMP Coldstart trap sent to a.b.c.d SNMP Warmstart trap sent to a.b.c.d SNMP Port X link up trap sent to a.b.c.d SNMP Port X Link down trap sent to a.b.c.d SNMP Configuring IP address in trap receivers list failed DEVICE Timezone set to x DEVICE...

  • Page 137: Web: Viewing The Event Log

    MNS-BB Software User Guide VLAN pvlan:port based VLAN stopped VLAN pvlan:default vlan is modified VLAN tvlan:vlan X deleted VLAN tvlan:vlan X enabled VLAN tvlan:vlan X disabled VLAN tvlan:tag based VLAN stopped VLAN tvlan:tag based VLAN started 23.7 Web: Viewing the Event Log To view the event log: 1.

  • Page 138: Cli: Ping Test

    MNS-BB Software User Guide 23.8.2 CLI: Ping Test Ping Test. You can issue single or multiple ping tests with varying repetitions or counts and timeout periods. The defaults and ranges are: _ Count: 1 (1 - 999) _ Timeout: 5 seconds (1 - 256 seconds) Syntax: ping <ipaddress>...

  • Page 139: Daylight Savings Time On Le2425A And Lev2525A Switches

    APPENDIX A Daylight Savings Time on LE2425A and LEV2525A Switches LE2425A and LEV2525A Switches provide a way to automatically adjust the system clock for Daylight Savings Time (DST) changes. The user defines the month and date to begin and end the change from standard time.
  • Page 140 On Desktop PC (Windows Console) Follow these steps to connect the Desktop PC or terminal to the LE2425A or LEV2525A Switch: Step 1: Using the DB9 cable, connect to the LE2425A and LEV2525A console port, as shown in the Fig. 1.0 below...
  • Page 141 Step 9: The download starts and proceeds to download the file. You will get the message "Upgrade is Successful. Please reboot LE2425A or LEV2525A now to start the application” at the end. If there is any error in the file transfer, you will get the error message "Upgrade failed" and the program will abort back to the (boot) prompt.

  • Page 142: Upgrade Over The Network

    Step 8: The download starts and proceeds to download the file. You will get the message " Upgrade is Successful. Please reboot LE2425A or LEV2525A now to start the application” at the end. If there is any error in the file transfer, you will get the error message " Upgrade failed " and the program will abort back to the (boot) prompt.
  • Page 143 MNS-BB Software User Guide Corporate Headquarters Black Box Corporation 1000 Park Drive Lawrence PA 15055 Phone: 724-746-5500 Fax: 724-746-0746 Web: http:// www.blackbox.com Email: techsupport@blackbox.com -132-...

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