Page 2 - Trademarks Used in this Manual; AppleTalk is a registered trademark of Apple Computer, Inc.
724-746-5500 | blackbox.com Page 2 LGB5028A User‘s Manual 724-746-5500 | blackbox.com Trademarks Used in this Manual We‘re here to help! If you have any questions about your application or our products, contact Black Box Tech Support at 724-746-5500 or go to blackbox.com and click on “Talk to Black ...
Page 3 - FCC and IC RFI Statements; Statements
724-746-5500 | blackbox.com 724-746-5500 | blackbox.com Page 3 LGB5028A User‘s Manual FCC and IC RFI Statements Federal Communications Commission and Industry Canada Radio Frequency Interference Statements This equipment generates, uses, and can radiate radio-frequency energy, and if not installed a...
Page 4 - NOM Statement; Todas las instrucciones de operación y uso deben ser seguidas.
724-746-5500 | blackbox.com Page 4 LGB5028A User‘s Manual 724-746-5500 | blackbox.com NOM Statement Instrucciones de Seguridad(Normas Oficiales Mexicanas Electrical Safety Statement) 1. Todas las instrucciones de seguridad y operación deberán ser leídas antes de que el aparato eléctrico sea operado....
Page 5 - The following conventions are used throughout this guide:; Safety Instructions; • Pick up the device by holding it on the left and right edges only.
724-746-5500 | blackbox.com 724-746-5500 | blackbox.com Page 5 LGB5028A User‘s Manual User’s Manual/Safety Instructions- User’s Manual This guide gives specific information on how to operate and use the management functions of the switch. The guide is intended for use by network administrators who a...
Page 6 - Table of Contents
724-746-5500 | blackbox.com Page 6 LGB5028A User‘s Manual 724-746-5500 | blackbox.com Table of Contents Table of Contents 1. Specifications ...................................................................................................................................................................
Page 11 - Chapter 1: Specifications; Physical Characteristics; 392 KB on-chip frame buffer; Management Features
724-746-5500 | blackbox.com 724-746-5500 | blackbox.com Page 11 LGB5028A User‘s Manual Chapter 1: Specifications 1. Specifications 1.1 Physical Characteristics Aggregate Bandwidth — LGB5028A: 28 Gbps; LGB5052A: 52 Gbps Buffer Architecture — 1392 KB on-chip frame buffer Network Interface — LGB5028A: ...
Page 12 - Standards —
724-746-5500 | blackbox.com Page 12 LGB5028A User‘s Manual 724-746-5500 | blackbox.com Chapter 1: Specifications 1.4 Standards Standards — IEEE 802.3 10BASE-T Ethernet (twisted-pair copper), IEEEE 802.3u 100BASE-TX Ethernet (twisted-pair copper), IEEE 802.3ab 1000BASE-TX Ethernet (twisted-pair coppe...
Page 16 - Chapter 3: Operation of Web-Based Management; button under the Web GUI. The switch’s help screens will pop up.
724-746-5500 | blackbox.com Page 16 LGB5028A User‘s Manual 724-746-5500 | blackbox.com Chapter 3: Operation of Web-Based Management 3. Operation of Web-Based Management The default values of the managed switch are listed in the table below: Table 3-1. Default values for Web-based management. Value D...
Page 18 - Chapter 4: Making Network Connections; Making Network Connections; See Appendix C for further information on cabling.
724-746-5500 | blackbox.com Page 18 LGB5028A User‘s Manual 724-746-5500 | blackbox.com Chapter 4: Making Network Connections 4. Making Network Connections 4.1 Connecting Network Devices You can connect the switch to 10-, 100-, or 1000-Mbps network cards in PCs and servers, as well as to other switch...
Page 19 - Chapter 5: System Configuration; System Configuration; Web Interface
724-746-5500 | blackbox.com 724-746-5500 | blackbox.com Page 19 LGB5028A User‘s Manual Chapter 5: System Configuration 5. System Configuration This chapter describes basic configuration tasks, including system Information and switch management (for example, time, account, IP, syslog, and SNMP). 5.1 ...
Page 22 - Parameter Description
724-746-5500 | blackbox.com Page 22 LGB5028A User‘s Manual 724-746-5500 | blackbox.com Chapter 5: System Configuration Figure 5-4. The Time Configuration screen. Parameter Description Clock Source: Select the clock source for the LGB5028A or LGB5052A. Choose from“Use local Settings” or “Use NTP Serv...
Page 35 - content is ASCII characters from 33 to 126.
724-746-5500 | blackbox.com 724-746-5500 | blackbox.com Page 35 LGB5028A User‘s Manual Chapter 5: System Configuration Privacy Password: Set a string identifying the privacy password phrase. The allowed string length is 8 to 32, and the allowed content is ASCII characters from 33 to 126. 5.6.4 Group...
Page 36 - the allowed content is ASCII characters from 33 to 126.
724-746-5500 | blackbox.com Page 36 LGB5028A User‘s Manual 724-746-5500 | blackbox.com Chapter 5: System Configuration Security Name: A string identifying the security name that this entry should belong to. The allowed string length is 1 to 32, and the allowed content is ASCII characters from 33 to ...
Page 37 - Click the “Save” icon to save the configuration to ROM.
724-746-5500 | blackbox.com 724-746-5500 | blackbox.com Page 37 LGB5028A User‘s Manual Chapter 5: System Configuration In general, if a view entry's view type is “excluded,” there should be another view entry existing with view type as “included” and its OID subtree should overstep the “excluded” vi...
Page 38 - Security Level
724-746-5500 | blackbox.com Page 38 LGB5028A User‘s Manual 724-746-5500 | blackbox.com Chapter 5: System Configuration v1: Reserved for SNMPv1. v2c: Reserved for SNMPv2c. usm: User-based Security Model (USM). Security Level Indicate the security model that this entry should belong to. Possible secur...
Page 41 - Chapter 6: Configuration; Chapter 6. Configuration; • Maximum Frame Size
724-746-5500 | blackbox.com 724-746-5500 | blackbox.com Page 41 LGB5028A User‘s Manual Chapter 6: Configuration Chapter 6. Configuration This chapter describes all the basic network configuration tasks, including Ports, Layer 2 network protocol (for example, VLANs, QoS, IGMP, ACLs and PoE etc.) and ...
Page 42 - Configured Link Speed:
724-746-5500 | blackbox.com Page 42 LGB5028A User‘s Manual 724-746-5500 | blackbox.com Chapter 6: Configuration Current Link Speed: Provide the current link speed of the port. Configured Link Speed: Select any available link speed for the given switch port. Auto Speed selects the highest speed that ...
Page 45 - The number of received and transmitted (good and bad) packets.
724-746-5500 | blackbox.com 724-746-5500 | blackbox.com Page 45 LGB5028A User‘s Manual Chapter 6: Configuration Figure 6-4. The Detailed Port Statistics Overview screen. Parameter Description Auto-refresh: Click on this box to refresh the port statistics information automatically. Upper left scroll ...
Page 46 - The number of long 2 frames received with invalid CRC.
724-746-5500 | blackbox.com Page 46 LGB5028A User‘s Manual 724-746-5500 | blackbox.com Chapter 6: Configuration Rx Jabber: The number of long 2 frames received with invalid CRC. Rx Filtered: Show the number of received frames filtered by the forwarding process. Short frames are frames that are small...
Page 50 - NOTE: The system log memory size and logging rate is limited.
724-746-5500 | blackbox.com Page 50 LGB5028A User‘s Manual 724-746-5500 | blackbox.com Chapter 6: Configuration Logging: Specify the logging operation of this port. The allowed values are: Enabled: Frames received on the port are stored in the System Log. Disabled: Frames received on the port are no...
Page 54 - DMAC Filter: Specify the destination MAC filter for this ACE.
724-746-5500 | blackbox.com Page 54 LGB5028A User‘s Manual 724-746-5500 | blackbox.com Chapter 6: Configuration MAC Parameters: SMAC Filter: (Only display when the frame type is Ethernet Type or ARP.) Specify the source MAC filter for this ACE. Any: No SMAC filter is specified. (SMAC filter status i...
Page 56 - Click on this button to refresh the information automatically.
724-746-5500 | blackbox.com Page 56 LGB5028A User‘s Manual 724-746-5500 | blackbox.com Chapter 6: Configuration Conflict: Indicate the hardware status of the specific ACE. The specific ACE is not applied to the hardware because of hardware limitations. Auto-refresh: Click on this button to refresh t...
Page 58 - Configuration
724-746-5500 | blackbox.com Page 58 LGB5028A User‘s Manual 724-746-5500 | blackbox.com Chapter 6: Configuration Port Members: Each switch port is listed for each group ID. Select a radio button to include a port in an aggregation, or clear the radio button to remove the port from the aggregation. By...
Page 60 - System Status
724-746-5500 | blackbox.com Page 60 LGB5028A User‘s Manual 724-746-5500 | blackbox.com Chapter 6: Configuration Reset: Click to undo any changes made locally and revert to previously saved values. System Status When you set the LACP function on the switch, system status provides a status overview fo...
Page 62 - The partner's port number connected to this port.
724-746-5500 | blackbox.com Page 62 LGB5028A User‘s Manual 724-746-5500 | blackbox.com Chapter 6: Configuration Partner System ID: The partner's system ID (MAC address). Partner Port: The partner's port number connected to this port. Auto-refresh: Check this box to auto-refresh to refresh the inform...
Page 64 - Click the “Save” button to save the setting.
724-746-5500 | blackbox.com Page 64 LGB5028A User‘s Manual 724-746-5500 | blackbox.com Chapter 6: Configuration 4. Click the “Save” button to save the setting. 5 .If you want to cancel the setting, click the “Reset” button. It will revert to previously saved values. Figure 6-17. The STP Bridge Confi...
Page 65 - Port Error Recovery Timeout:
724-746-5500 | blackbox.com 724-746-5500 | blackbox.com Page 65 LGB5028A User‘s Manual Chapter 6: Configuration Port Error Recovery: Control whether a port in the error-disabled state automatically will be enabled after a certain time. If recovery is not enabled, ports have to be disabled and re-ena...
Page 66 - Click “Save” to save the setting
724-746-5500 | blackbox.com Page 66 LGB5028A User‘s Manual 724-746-5500 | blackbox.com Chapter 6: Configuration Parameter Description Configuration Identification Configuration Name: The name identifying the VLAN to MSTI mapping. Bridges must share the name and revision, as well as the VLAN-to-MSTI ...
Page 67 - Parameter description:
724-746-5500 | blackbox.com 724-746-5500 | blackbox.com Page 67 LGB5028A User‘s Manual Chapter 6: Configuration Figure 6-19. The MSTI Configuration screen. Parameter description: MSTI: Show the bridge instance. The CIST is the default instance (always active). Priority: Control the bridge priority. ...
Page 72 - Buttons
724-746-5500 | blackbox.com Page 72 LGB5028A User‘s Manual 724-746-5500 | blackbox.com Chapter 6: Configuration Buttons Auto-refresh: Check this box to refresh the information automatically. Upper right icon (Refresh): Click on this button to refresh the STP Bridges status information manually. 6.4....
Page 76 - Shows the physical port index of the switch.
724-746-5500 | blackbox.com Page 76 LGB5028A User‘s Manual 724-746-5500 | blackbox.com Chapter 6: Configuration Proxy Enabled: Enable IGMP Proxy. This feature can be used to avoid forwarding unnecessary join and leave messages to the router side. Port: Shows the physical port index of the switch. Ro...
Page 77 - range is 1 to 255 default robustness variable value is 2.
724-746-5500 | blackbox.com 724-746-5500 | blackbox.com Page 77 LGB5028A User‘s Manual Chapter 6: Configuration IGMP Querier: A router sends IGMP query messages onto a particular link. This router is called the querier. Enable the IGMP querier in the VLAN. Compatibility: Compatibility is maintained ...
Page 81 - Ports under this group.
724-746-5500 | blackbox.com 724-746-5500 | blackbox.com Page 81 LGB5028A User‘s Manual Chapter 6: Configuration Port Members: Ports under this group. Auto-refresh: Check the box next to auto-refresh and the device will refresh the log automatically. Upper right icon (Refresh, <<, >> ): C...
Page 82 - IGMPv3 Information Table Columns
724-746-5500 | blackbox.com Page 82 LGB5028A User‘s Manual 724-746-5500 | blackbox.com Chapter 6: Configuration The switch will use the last entry of the currently displayed table as a basis for the next lookup. When the end is reached, the text “No more entries” is shown in the displayed table. Use...
Page 96 - LLDP Port Configuration
724-746-5500 | blackbox.com Page 96 LGB5028A User‘s Manual 724-746-5500 | blackbox.com Chapter 6: Configuration Tx Reinit: When a port is disabled, LLDP is disabled, or the switch is rebooted, an LLDP shutdown frame is transmitted to the neighboring units, signaling that the LLDP information isn't v...
Page 98 - Check the box to auto-refresh the device information.
724-746-5500 | blackbox.com Page 98 LGB5028A User‘s Manual 724-746-5500 | blackbox.com Chapter 6: Configuration Management Address: Management Address is the neighbor unit's address that is used for higher layer entities to assist discovery by the network management. For example, this could hold the...
Page 100 - Coordinates Location
724-746-5500 | blackbox.com Page 100 LGB5028A User‘s Manual 724-746-5500 | blackbox.com Chapter 6: Configuration LLDP-MED defines an LLDP-MED Fast Start interaction between the protocol and the application layers on top of the protocol so it can achieve these related properties. Initially, a network...
Page 101 - Landmark or vanity address—Example: Columbia University.
724-746-5500 | blackbox.com 724-746-5500 | blackbox.com Page 101 LGB5028A User‘s Manual Chapter 6: Configuration Leading street direction: Leading street direction—Example: N. Trailing street suffix: Trailing street suffix—Example: SW. Street suffix: Street suffix—Example: Ave, Platz. House no.: Hou...
Page 102 - Check to delete the policy. It will be deleted during the next save.
724-746-5500 | blackbox.com Page 102 LGB5028A User‘s Manual 724-746-5500 | blackbox.com Chapter 6: Configuration 5. Streaming Video 6. Control/Signalling (conditionally support a separate network policy for the media types above) A large network may support multiple VoIP policies across the entire o...
Page 103 - Port Policies Configuration:
724-746-5500 | blackbox.com 724-746-5500 | blackbox.com Page 103 LGB5028A User‘s Manual Chapter 6: Configuration Tagged indicates that the device is using the IEEE 802.1Q tagged frame format, and that both the VLAN ID and the Layer 2 priority values are being used, as well as the DSCP value. The tag...
Page 104 - LLDP-MED network connectivity device definition:
724-746-5500 | blackbox.com Page 104 LGB5028A User‘s Manual 724-746-5500 | blackbox.com Chapter 6: Configuration Device Type: LLDP-MED devices are comprised of two primary device types: network connectivity devices and endpoint devices. LLDP-MED network connectivity device definition: LLDP-MED netwo...
Page 105 - Location identification
724-746-5500 | blackbox.com 724-746-5500 | blackbox.com Page 105 LGB5028A User‘s Manual Chapter 6: Configuration 1. LLDP-MED capabilities 2. Network policy 3. Location identification 4. Extended power via MDI—PSE 5. Extended power via MDI—PD 6. Inventory 7. Reserved Application Type: Application typ...
Page 107 - The resolved Rx Tw for this link.
724-746-5500 | blackbox.com 724-746-5500 | blackbox.com Page 107 LGB5028A User‘s Manual Chapter 6: Configuration Resolved Rx Tw: The resolved Rx Tw for this link. NOTE: This is NOT the link partner. The resolved value that is the actual "tx wakeup time” and used for this link (based on EEE infor...
Page 108 - elapsed since the last change was detected.
724-746-5500 | blackbox.com Page 108 LGB5028A User‘s Manual 724-746-5500 | blackbox.com Chapter 6: Configuration Figure 6-47. The LLDP Port Statistics Information screen. Parameter Description Global Counters Neighbor entries were last changed: Shows the time when the last entry was last deleted or ...
Page 109 - Total Neighbors Entries Aged Out:; Filtering Database; MAC Table
724-746-5500 | blackbox.com 724-746-5500 | blackbox.com Page 109 LGB5028A User‘s Manual Chapter 6: Configuration Total Neighbors Entries Aged Out: Shows the number of entries deleted because time-to-live expired. Local Counters The displayed table contains a row for each port. The columns hold the f...
Page 110 - MAC Table Learning
724-746-5500 | blackbox.com Page 110 LGB5028A User‘s Manual 724-746-5500 | blackbox.com Chapter 6: Configuration MAC Table Learning 1. Click “Configuration.” 2. Specify the Port Members (“Auto,” “Disable,”“Secure”). 3. Click “Save.” Static MAC Table Configuration 1. Click “Configuration” and “Add ne...
Page 111 - Static MAC Table Configuration
724-746-5500 | blackbox.com 724-746-5500 | blackbox.com Page 111 LGB5028A User‘s Manual Chapter 6: Configuration Auto: Learning occurs automatically as soon as a frame with unknown SMAC is received. Disable: No learning occurs. Secure: Only static MAC entries are learned, all other frames are droppe...
Page 116 - This is the logical port number of this row.
724-746-5500 | blackbox.com Page 116 LGB5028A User‘s Manual 724-746-5500 | blackbox.com Chapter 6: Configuration Port: This is the logical port number of this row. Port Type: Port can be one of the following types: “Unaware,” “Customer port (C-port),” “Service port (S-port),” “Custom Service port (S...
Page 119 - Show egress filtering frame status whether tagged or untagged.
724-746-5500 | blackbox.com 724-746-5500 | blackbox.com Page 119 LGB5028A User‘s Manual Chapter 6: Configuration Frame Type: Show whether the port accepts all frames or only tagged frames. This parameter affects VLAN ingress processing. If the port only accepts tagged frames, untagged frames receive...
Page 124 - Adding a New Group to VLAN mapping entry:
724-746-5500 | blackbox.com Page 124 LGB5028A User‘s Manual 724-746-5500 | blackbox.com Chapter 6: Configuration b. PID: If the OUI is hexadecimal 000000, the protocol ID is the Ethernet type (EtherType) field value for the protocol running on top of SNAP; if the OUI is an OUI for a particular organ...
Page 127 - Port Discovery Protocol:
724-746-5500 | blackbox.com 724-746-5500 | blackbox.com Page 127 LGB5028A User‘s Manual Chapter 6: Configuration VLAN ID: Indicate the Voice VLAN ID. It should be a unique VLAN ID in the system and cannot equal each port’s PVID. It is a conflict in configuration if the value equals management VID, M...
Page 130 - GARP Applicant
724-746-5500 | blackbox.com Page 130 LGB5028A User‘s Manual 724-746-5500 | blackbox.com Chapter 6: Configuration Three different timers can be configured on this page: Join Timer: The default value for Join timer is 200 ms. Leave Timer: The range of values for “Leave Timer” is 600–1000 ms. The defau...
Page 133 - • Disable: Select to disable GVRP mode on this port.
724-746-5500 | blackbox.com 724-746-5500 | blackbox.com Page 133 LGB5028A User‘s Manual Chapter 6: Configuration 1. GVRP Mode This configuration enables/disables GVRP Mode on a particular port locally. • Disable: Select to disable GVRP mode on this port. • Enable: Select to enable GVRP mode on this ...
Page 136 - Actual PCP is PRI column in VLAN tag packet, DEI is CFI column.
724-746-5500 | blackbox.com Page 136 LGB5028A User‘s Manual 724-746-5500 | blackbox.com Chapter 6: Configuration Buttons: Save: Click to save changes. Reset: Click to undo any changes made locally and revert to previously saved values. NOTES: DP level: Every incoming frame is classified to a Drop Pr...
Page 137 - Figure 6-66. The QoS Ingress Port Policers Configuration screen.
724-746-5500 | blackbox.com 724-746-5500 | blackbox.com Page 137 LGB5028A User‘s Manual Chapter 6: Configuration Figure 6-66. The QoS Ingress Port Policers Configuration screen. Parameter Description Port: The logical port for the settings contained in the same row. Click on the port number to confi...
Page 141 - Queue Scheduler Percent:
724-746-5500 | blackbox.com 724-746-5500 | blackbox.com Page 141 LGB5028A User‘s Manual Chapter 6: Configuration Queue Scheduler Percent: If you select the scheduler mode with weighted, then the screen will change as shown in Figure 6-69. Show the weight in percent for this queue. This parameter is ...
Page 143 - Figure 6-70. QoS Egress Port Scheduler and Shapers Port 1 screen.
724-746-5500 | blackbox.com 724-746-5500 | blackbox.com Page 143 LGB5028A User‘s Manual Chapter 6: Configuration If you select the scheduler mode with weighted, then the screen will change as shown in this figure. = Figure 6-70. QoS Egress Port Scheduler and Shapers Port 1 screen. Parameter Descript...
Page 147 - Port egress rewriting can be one of the parameters listed below:
724-746-5500 | blackbox.com 724-746-5500 | blackbox.com Page 147 LGB5028A User‘s Manual Chapter 6: Configuration Egress: Port egress rewriting can be one of the parameters listed below: • Disable: No egress rewrite. • Enable: Rewrite enable without remapped. • Remap: DSCP from analyzer is remapped, ...
Page 151 - Classify: Click to enable classification at the ingress side.
724-746-5500 | blackbox.com 724-746-5500 | blackbox.com Page 151 LGB5028A User‘s Manual Chapter 6: Configuration 2. Classify: Click to enable classification at the ingress side. Egress: Select the following configurable parameters for the egress side: 1. Remap DP0: Select the DSCP value from select ...
Page 154 - Key configurations are described below:
724-746-5500 | blackbox.com Page 154 LGB5028A User‘s Manual 724-746-5500 | blackbox.com Chapter 6: Configuration “x”: Deletes the QCE. “+”: The lowest plus sign adds a new entry at the bottom of the QCE listings. Port Members: Check the box next to any port to make it a member of the QCL entry. By d...
Page 155 - Action Configuration:
724-746-5500 | blackbox.com 724-746-5500 | blackbox.com Page 155 LGB5028A User‘s Manual Chapter 6: Configuration Action Configuration: Class QoS Class: “class (0-7)”; default: basic classification DP Valid DP Level: (0–3)"; default: basic classification DSCP Valid dscp value can be (0-63, BE, CS...
Page 156 - Indicates the list of ports configured with the QCE.
724-746-5500 | blackbox.com Page 156 LGB5028A User‘s Manual 724-746-5500 | blackbox.com Chapter 6: Configuration Port: Indicates the list of ports configured with the QCE. Action: Indicate the classification action taken on an ingress frame if parameters configured are matched with the frame's conte...
Page 166 - the voice high priority, set the value to 7.
724-746-5500 | blackbox.com Page 166 LGB5028A User‘s Manual 724-746-5500 | blackbox.com Chapter 6: Configuration Traffic Class: Scroll to select the traffic class for the data stream priority. The available values are from 0 (Low) to 7 (High). To give the voice high priority, set the value to 7. Por...
Page 168 - Trap Event Severity
724-746-5500 | blackbox.com Page 168 LGB5028A User‘s Manual 724-746-5500 | blackbox.com Chapter 6: Configuration NOTE: For a given port, a frame is only transmitted once. It is not possible to mirror Tx frames on the mirror port. Because of this, the mode for the selected mirror port is limited to d...
Page 169 - SMTP Configuration
724-746-5500 | blackbox.com 724-746-5500 | blackbox.com Page 169 LGB5028A User‘s Manual Chapter 6: Configuration Parameter Description Group Name: The field describes the Trap Event. Severity Level: Scroll to select the event type from “Emerg,” “Alert,” “Crit,” “Error,” “Warning,” “Notice,” “Info,” ...
Page 170 - Select the e-mail address that will receive the alarm message.
724-746-5500 | blackbox.com Page 170 LGB5028A User‘s Manual 724-746-5500 | blackbox.com Chapter 6: Configuration E-mail Address 1–6: Select the e-mail address that will receive the alarm message. Buttons: Save: Click to save changes. Reset: Click to undo any changes made locally and revert to previo...
Page 179 - Specify the port that you want to monitor.
724-746-5500 | blackbox.com 724-746-5500 | blackbox.com Page 179 LGB5028A User‘s Manual Chapter 7: Security Buttons: Save: Click to save changes. Reset: Click to undo any changes made locally and revert to previously saved values. 7.3.2 Statistics The section describes how to show the switch’s DHCP ...
Page 193 - Figure 7-17. The RADIUS Accounting Server Configuration screen.
724-746-5500 | blackbox.com 724-746-5500 | blackbox.com Page 193 LGB5028A User‘s Manual Chapter 7: Security Figure 7-15. The TACACS+ Authorization and Accounting Configuration screen. Figure 7-16. The RADIUS Authentication Server Configuration screen. Figure 7-17. The RADIUS Accounting Server Config...
Page 202 - Access Management
724-746-5500 | blackbox.com Page 202 LGB5028A User‘s Manual 724-746-5500 | blackbox.com Chapter 7: Security Figure 7-23. The Port Security Port Status screen. Parameter Description MAC Address & VLAN ID: The MAC address and VLAN ID for this port. If no MAC addresses are learned, a single row sta...
Page 207 - Chapter 8: Maintenance
724-746-5500 | blackbox.com 724-746-5500 | blackbox.com Page 207 LGB5028A User‘s Manual Chapter 8: Maintenance 8. Maintenance This chapter describes all the switch maintenance configuration tasks to enhance the performance of local network including restart device, firmware upgrade, save/restore, im...
Page 218 - CDP
724-746-5500 | blackbox.com Page 218 LGB5028A User‘s Manual 724-746-5500 | blackbox.com Appendix A: Glossary Auto-Negotiation: Auto-Negotiation is the process where two different devices establish the mode of operation and the speed settings that can be shared by those devices for a link. CC: CC is ...
Page 219 - Dotted Decimal Notation:
724-746-5500 | blackbox.com 724-746-5500 | blackbox.com Page 219 LGB5028A User‘s Manual Appendix A: Glossary DoS: DoS is an acronym for Denial of Service. In a denial-of-service (DoS) attack, an attacker attempts to prevent legitimate users from accessing information or services. By targeting networ...
Page 221 - they are local file systems.
724-746-5500 | blackbox.com 724-746-5500 | blackbox.com Page 221 LGB5028A User‘s Manual Appendix A: Glossary MAC Table: Switching of frames is based upon the DMAC address contained in the frame. The switch builds up a table that maps MAC addresses to switch ports for knowing which ports the frames s...
Page 224 - exchange the messages between computers.
724-746-5500 | blackbox.com Page 224 LGB5028A User‘s Manual 724-746-5500 | blackbox.com Appendix A: Glossary Tag Priority: Tag priority is a 3-bit field storing the priority level for the 802.1Q frame. TCP: TCP is an acronym for Transmission Control Protocol. It is a communications protocol that use...
Page 227 - Appendix B: Troubleshooting; Appendix B. Troubleshooting; Faulty or loose cables.
724-746-5500 | blackbox.com 724-746-5500 | blackbox.com Page 227 LGB5028A User‘s Manual Appendix B: Troubleshooting Appendix B. Troubleshooting B.1 Basic Troubleshooting Tips Most problems are caused by the following situations. Check for these items first when starting your troubleshooting: Connect...
Page 228 - B.2 Contacting Black Box; • the nature and duration of the problem.; B.3 Shipping and Packaging; If you need to transport or ship your switch:
724-746-5500 | blackbox.com Page 228 LGB5028A User‘s Manual 724-746-5500 | blackbox.com Appendix B: Troubleshooting Table B-1. Troubleshooting chart. Symptom Action System LED is OFF Check connections between the switch, the power cord, and the wall outlet. Contact Black Box Technical Support at 724...
Page 229 - C.1 Twisted-Pair Cable and Pin Assignments; conform with FCC standards.
724-746-5500 | blackbox.com 724-746-5500 | blackbox.com Page 229 LGB5028A User‘s Manual Appendix C: Cables Appendix C. Cables C.1 Twisted-Pair Cable and Pin Assignments For 10BASE-T/100BASE-TX connections, the twisted-pair cable must have two pairs of wires. For 1000BASE-T connections, the twisted-p...
Page 231 - C.6 Cable Testing for Existing Category 5 Cable; Reduce the number of connectors used in the link.
724-746-5500 | blackbox.com 724-746-5500 | blackbox.com Page 231 LGB5028A User‘s Manual Appendix C: Cables Table C-2. 1000BASE-T MDI and MDI-X port pinouts. Pin MDI Signal Name MDI-X Signal Name 1 Bidirectional Pair A plus (BI_DA+) Bidirectional Pair B plus (BI_DB+) 2 Bidirectional Pair A minus (BI_...
Page 232 - About Black Box; BLACK BOX; Tech support the
LGB5028A User‘s Manual 724-746-5500 | blackbox.com About Black Box Black Box provides an extensive range of networking and infrastructure products. You’ll find everything from cabinets and racks and power and surge protection products to media converters and Ethernet switches all supported by free, ...