Page 3 - Contents
Contents 1. INTRODUCTION ......................................................................................................1 Features .......................................................................................................................2 Software Features ..........................
Page 7 - means connecting to; MDIX; means connecting to a workstation or PC.
1 1. Introduction Welcome to the World of Network Switching. In the modern business society, communication and information sharing are fundamental to our life. And computer networks have proven to be one of the fastest ways of communication. LevelOne GSW-2491TXM, 24Fast/1Slide-in Slot L2 SNMP Switch...
Page 8 - Management
2 Features Confirms to IEEE802.3u 10BASE-T, 802.3u 100BASE-TX, 802.3ab 1000BASE-T, 802.3z Gigabit fiber 24 auto-sensing 10/100Mbps Ethernet RJ-45 ports plus one expansion slot IEEE802.3x Flow control ¾ Flow control for full duplex ¾ Backpressure for half duplex High back-plane bandwidth 8.8G...
Page 10 - Package Contents; Unpack the contents of the
4 Stacking It can be stack and management by a single IP address. The master switch can manage slave switch through any port and the stack group can be up to 8 switches. 802.1x Support IEEE802.1x User-Authentication and can report to RADIUS server. ¾ Reject ¾ Accept ¾ Authorize ¾ Disable DHCP Suppor...
Page 11 - Ethernet Switching Technology; which replaced the inefficient receiving port.
5 Compare the contents of your LevelOne GSW-2491TXM package with the standard checklist above. IF any item is missing or damaged, please contact your local dealer for service. Ethernet Switching Technology Ethernet Switching Technology dramatically boosted the total bandwidth of a network, eliminate...
Page 12 - Hardware Description; Physical Dimension; MDI
6 2. Hardware Description This Section mainly describes the hardware of the LevelOne GSW-2491TXM, and gives a physical and functional overview of this Module Switch. Physical Dimension The LevelOne GSW-2491TXM’s physical dimension is 440mmx 161mm x 44.5mm (W x D x H) . Front Panel The Front Panel of...
Page 13 - modules available for the LevelOne GSW-2491TXM.; LED Indicators; LED; Rear Panel
7 Module (Optional): There are 2 X 1000T(MDU-0140), 2 X mini GBIC(MDU-0142) modules available for the LevelOne GSW-2491TXM. LED Indicators The LED Indicators gives real-time information of systematic operation status. The following table provides descriptions of LED status and their meaning. Figure ...
Page 14 - Desktop Installation; allow air circulation.; Attaching Rubber Feet; B. Remove adhesive backing from your Rubber Feet.
8 LevelOne GSW-2491TXM as shown in Figure 2-3. The Switch will work with AC in the range 100-240V AC, 50-60Hz. Figure 2-3. The Rear Panel of the LevelOne GSW-2491TXM Desktop Installation Set the Switch on a sufficiently large flat space with a power outlet nearby. The surface where you put your Swit...
Page 15 - Rack-mounted Installation; Perform the following steps to rack mount the switch:
9 Rack-mounted Installation The LevelOne GSW-2491TXM come with a rack-mounted kid and can be mounted in an EIA standard size, 19-inch Rack. The Switch can be placed in a wiring closet with other equipment. Perform the following steps to rack mount the switch: A. Position one bracket to align with th...
Page 16 - enclosed rack installation.; Power On
10 Figure 2-5. Mount the switch in an EIA standard 19-inch Rack Note: For proper ventilation, allow about at least 4 inches (10 cm) of clearance on the front and 3.4 inches (8 cm) on the back of the Switch. This is especially important for enclosed rack installation. Power On Connect the power cord ...
Page 17 - Network Application; interconnecting networking segments.; Small Workgroup
11 3. Network Application This section provides you a few samples of network topology in which the Switch is used. In general, the LevelOne GSW-2491TXM is designed as a segment switch. That is, with its large address table (8000 MAC address) and high performance, it is ideal for interconnecting netw...
Page 18 - Segment Bridge; allow other users to access the data on server.
12 Figure 3-1. Small Workgroup Application Segment Bridge For enterprise networks where large data broadcasts are constantly processed, this switch is an ideal solution for department users to connect to the corporate backbone. In the illustration below, two Ethernet switches with PCs, print server,...
Page 19 - Stacking Workgroup; without service interruption
13 Stacking Workgroup With stackable technology can unites up to eight individual stackable switches into a single logical unit, using cables and with stacking software supported. The stack behaves as a single switching unit that is managed by a master switch elected from one of the member switches....
Page 20 - Connecting to the Switch; a male DB-9 connector to connect a terminal or PC to the Console port.
14 The stackable switch (Master) The stackable switch (Slave 01) The stackable switch (Slave 02) Cable connection (Cat. 5 cable) Cable connection (Cat. 5 cable) The stackable switch (Slave 08) Can units up to 8 stackable switches Figure 3-3. A stacking workgroup application Connecting to the Switch ...
Page 21 - Console Management; Login in the Console Interface
15 4. Console Management Login in the Console Interface When the connection between Switch and PC is ready, turn on the PC and run a terminal emulation program or Hyper Terminal and configure its communication parameters to match the following default characteristics of the console port: Baud Rate: ...
Page 22 - Console – Menu Line; root; Main Menu; Status and Counters:
16 Console login screen Main Menu Console – Menu Line 1. Provide a menu line interface to manage and monitor the switch. User can use windows Hyper Terminal program through the console port to connect the switch for configuration. 2. The default user name and password is “ root ”. Main Menu There ar...
Page 23 - Control Key description:; The control keys provided in all menus:
17 Main menu line interface Control Key description: The control keys provided in all menus: Tab: Move the vernier to next item. Backspace: Move the vernier to previous item. Enter: Select item. Space: Toggle selected item to next configure or change the value. Esc: to exit the current action mode.
Page 24 - Status and Counters; Tab; Port Status; UP
18 Status and Counters In Status and Counters, you can view Port status, counters, and configure system parameter. You can press the “ Tab ” or “ Backspace ” to choose item, and press “ Enter ” key to select item. Status and Counters main configuration interface Port Status It displays status of por...
Page 25 - display the port security status.; Port Counters; It displays the current port counter information. Select the
19 Security: display the port security status. Port status display interface Port Counters It displays the current port counter information. Select the <Refresh> action to get newest port counter information. Port counter information interface
Page 26 - System Information
20 System Information It displays the system parameter. 1. System Name: the name of device. 2. System Location: where the device is located. 3. System Description: the name of device type. 4. Firmware Version: the switch’s firmware version. 5. Hardware Version: the switch’s Hardware version. 6. Kern...
Page 27 - Switch Static Configuration; Administration Configuration; username and password.
21 Switch Static Configuration In Switch Static Configuration, it has 8 main functions – Administration, Port, Trunk, Port Mirroring, VLAN, Priority, MAC Address, and Misc Configuration. Under each function, there are more sub-functions. We will describe in following paragraph. Switch Configuration ...
Page 28 - Device Information; IP Configuration
22 Device Information You can configure the device information. 1. Select <Edit> action to configure. 2. Name: assign the name for the switch. 3. Description: a short description for the switch. 4. Location: the switch location, ex: Taipei. 5. Contact: the contact person or information. 6. Sel...
Page 29 - User Name Configuration; You can change the console and web management login user name.
23 IP Configuration interface User Name Configuration You can change the console and web management login user name. 1. Select the <Edit> 2. Enter the new user name 3. Select the <Save> User Name Configuration interface
Page 30 - Password Configuration; Port Configuration
24 Password Configuration You can change the console and web management login password. 1. Select the <Edit> 2. Old Password: enter the old password. 3. New Password: enter the new password. 4. Enter Again: reenter the new password for confirmation. 5. Select the <Save> Password Configur...
Page 31 - Back Pressure; Trunk Configuration
25 7. BP: enable or disable Back Pressure function (Backpressure for half duplex mode). 8. Bandwidth In/ Out: per port packet transmission rate control. Per level is 100Kbps. It supports individual control method of TX and RX. 9. Priority: set port to high or low priority. 10. Security: enable or di...
Page 32 - Port Mirroring Configuration; Disable
26 Trunk Configuration interface Port Mirroring Configuration The port mirroring is a method for monitor traffic of switched networks. The specific port can monitor traffic through the mirror ports. The monitored ports in or out traffic will be duplicated into monitoring port. 1. Select the <Edit...
Page 33 - Set the destination port of mirroring packet. All of the packets of; Space; ” key to mark the mirroring port can.
27 Port Mirroring interface 3. Analysis port: Set the destination port of mirroring packet. All of the packets of mirroring port will be duplicated and sent to Analysis port. 4. Use “ Space ” key to mark the mirroring port can. 5. Select the <Save> . Port Mirroring interface
Page 34 - VLAN Configuration; VLAN Configure
28 VLAN Configuration You can configure VLAN in VLAN Configuration. There are four functions in VLAN Configuration mode: VLAN Configuration, Create a VLAN Group, Edit/Delete VLAN Group and Group Sorted Node. Follow the below description to configure VLAN. VLAN Configuration Main interface VLAN Confi...
Page 35 - Create VLAN Group
29 Drop untagged frame. Press “ Space ” key to select drop or forward the untagged frame. 3. Select <Save> to save the configuration. VLAN Configure interface Create VLAN Group Create Port-Based VLAN 1. Select <Edit>. 2. VLAN Name: Type a name for the new VLAN, ex: VLAN01. 3. Group ID:...
Page 36 - Enable security VLAN setting:
30 Create VLAN Group: PortBase interface Create 802.1Q VLAN 1. Enable security VLAN setting: select to enable or disable security VLAN group. When you select to enable security VLAN group, only the members in this VLAN group can access to the switch. The steps of setting security VLAN refer to the...
Page 37 - Edit / Delete VLAN Group
31 Create VLAN Group: 802.1Q interface Edit / Delete VLAN Group User can edit or delete a VLAN group. 1. Select <Edit> or <Delete> action. 2. Select the VLAN group that you want to edit or delete, then press enter. 3. In <Edit> action, user can modify the member port and remove som...
Page 38 - Group Sorted Mode; In the Edit/Delete a VLAN group page will display the result.; ” key to select the sort mode.
32 Edit/Delete a VLAN Group interface Group Sorted Mode You can select VLAN groups sorted mode: (1) Name (2) VLAN ID . In the Edit/Delete a VLAN group page will display the result. 1. Select <Edit> 2. Use “ Space ” key to select the sort mode. 3. Select <Save> Group Sorted Mode interface
Page 39 - Priority Configuration
33 Priority Configuration You can configure port priority level. There are 0~7-priority level can map to high or low queue. 1. Select <Edit> . 2. Press “ Space ” key to select the priority level mapping to high or low queue. 3. Qos Mode: select the mode to process incoming packets. First Com...
Page 40 - MAC Address Configuration
34 Priority Configuration interface MAC Address Configuration When you add a static MAC address, it remains in the switch's address table, regardless of whether the device is physically connected to the switch. This saves the switch from having to re-learn a device's MAC address when the disconnecte...
Page 43 - Misc Configuration
37 Add Filtering MAC Address interface Edit Filtering MAC address 1. Select <Edit> key to modify a static Filtering address. 2. Choose the MAC address that you want to modify and then press “ Enter ”. 3. Select <Edit> key to modify. 4. Press “ ESC ” to go back action menu line 5. Selec...
Page 44 - bridge transit delay bound control” is enabled situation.
38 number of seconds that an inactive MAC address remains in the switch’s address table. The valid range is 0, 300~765 seconds. Default is 300 seconds. Broadcast Storm Filter mode: configure the broadcast storm filter mode. The valid threshold values are 5%, 10%, 15%, 20%, 25%, and N/A. The port w...
Page 46 - Protocol Related Configuration; Protocol Relate Configuration section.; STP; while preventing undesirable loops in the network.
40 Protocol Related Configuration You can configure Spanning Tree Protocol, SNMP, LACP, IGMP/GVRP, and 802.1x in Protocol Relate Configuration section. Protocol Relate Configuration interface STP Spanning tree is a link management protocol that provides path redundancy while preventing undesirable l...
Page 47 - ” key to select the option.; System Configuration; assign path priority number.
41 STP Setup You must enable Spanning Tree function before configure STP function. 1. Select <Edit> 2. Use “ Space ” key to select the option. 3. Select <Save> . STP Setup interface System Configuration You can configure the STP system parameter after enable the STP function. You can vie...
Page 48 - Per Port Setting
42 STP System Configuration interface Per Port Setting 1. Select <Edit> . 2. Path Cost: specifies the path cost of the port that switch uses to determine which port are the forwarding ports. 3. Priority: This is mean port priority; you can make it more or less likely to become the root port. 4...
Page 49 - SNMP
43 Per Port Setting interface SNMP To define management stations as trap managers and to enter SNMP community strings. You can also define a name, location, and contact person for the switch. SNMP Configuration interface
Page 50 - Community Strings
44 SNMP System Options 1. Press <Edit> . 2. System Name: assign a name for the switch. 3. System Contact: Type the name of contact person or organization. 4. System Location: Type the location of the switch. 5. Press “ ESC ” goes back action menu line. 6. Press <Save> to save configure v...
Page 51 - Edit Community Name; Choose the item that you want to modify and then press “; Enter; Press “; ” key to change the right.; Delete Community Name
45 Add Community Strings interface Edit Community Name 1. Select <Edit> 2. Choose the item that you want to modify and then press “ Enter ” . 3. Community Name: type the new name. 4. Write Access: Press “ Space ” key to change the right. 5. Select <Save> . Edit Community Strings interf...
Page 52 - Add the trap manager
46 1. Select <Delete> . 2. Choose the community name that you want to delete and then press “ Enter ”. 3. When pressing “ Enter ” will complete deletion. Trap Managers A trap manager is a management station that receives traps, the system alerts generated by the switch. If no trap manager is d...
Page 53 - Delete Trap Manager; Choose the trap manager that you want to delete and then press “; pressing; ” will complete deletion.; LACP; more detail information refers to IEEE 802.3ad.
47 Add Trap Manager interface Delete Trap Manager 1. Select <Delete> 2. Choose the trap manager that you want to delete and then press “ Enter ”. 3. When pressing “ Enter ” will complete deletion. LACP The Link Aggregation Control Protocol (LACP) provides a standardized means for exchanging ...
Page 54 - Working Ports Setting
48 LACP Configuration interface Working Ports Setting 1. Select <Edit> 2. Group: Display the trunk group ID. 3. LACP: Press “ Space ” key to enable or disable LACP (Link Aggregation Control Protocol) support. When LACP enable, the group is LACP static trunk group. When LACP disable, the group ...
Page 55 - LACP State Activity; ” key to select the Port State Activity.
49 LACP Working Ports configuration interface LACP State Activity 1. Select <Edit> 2. Use “ Space ” key to select the Port State Activity. Active: The port automatically sends LACP protocol packets. Passive: The port does not automatically send LACP protocol packets, and responds only if i...
Page 56 - Group Status; You can enable or disable the IGMP/GVRP (GARP VLAN Registration; ” key to change the value
50 Group Status When you setting trunk group, you can see the relation information in here. LACP Group State interface IGMP/GVRP You can enable or disable the IGMP/GVRP (GARP VLAN Registration Protocol). 1. Select <Edit> 2. Use “ Space ” key to change the value 3. Select <Save>
Page 59 - Per Port Configuration; The State provides Disable, Accept, Reject and Authorize. Use “; key change
53 802.1x System Configuration interface Per Port Configuration The State provides Disable, Accept, Reject and Authorize. Use “ Space ” key change the state value. 802.1x Per Port Setting interface
Page 61 - System Reset Configuration; Factory Default; Reset switch to default configuration.
55 System Reset Configuration System Reset Configuration interface Factory Default Reset switch to default configuration. Press “ Y ”, switch will load default setting. After finished load default setting, switch will reboot automatically. Factory Default interface
Page 62 - Update Firmware
56 System Reboot Reboot the switch in software reset. TFTP Configuration It provides user to update firmware or restore EEPROM value or upload current EEPROM value. TFTP Update Firmware interface Update Firmware It provides user uses TFTP to update firmware. 1. Start the TFTP server, and copy firmwa...
Page 63 - TFTP Restore Configuration
57 Update Firmware interface TFTP Restore Configuration You can restore EEPROM value, which saved in TFTP server, from TFTP server. 1. Start the TFTP server. 2. Select <Edit> . 3. TFTP Server IP: type the IP of TFTP server. 4. Restore File Name: type the image file name. 5. Press “ ESC ” back ...
Page 64 - TFTP Backup Configuration
58 TFTP Restore Configuration interface TFTP Backup Configuration You can save current EEPROM value to TFTP server as backup. The backup file can be restore from TFTP server when you need. 1. Start the TFTP server. 2. Select <Edit> . 3. TFTP Server IP: type the IP of TFTP server. 4. Backup Fil...
Page 65 - You will see the following screen displays.; send file; menu from menu bar.; browse
59 TFTP Backup Configuration interface X-modem Upgrade Before using X-modem upgrade, disconnect terminal and modify baud rate to 57600bps, then connect again. 1. Press “ X ” key to start upgrading from X-modem. 2. You will see the following screen displays. 3. Select “ send file " under Transfer...
Page 67 - Web-Based Management; About Web-based Management; Internet Explorer.; Preparing for Web Management; default IP of the Switch. Please refer to; Console Management; Chapter for console
61 5. Web-Based Management This section introduces the configuration and functions of the Web-Based management. About Web-based Management Inside the CPU board of the switch exists an embedded HTML web site residing in flash memory. It offers advanced management features and allow users to manage th...
Page 68 - Online Help; System Login
62 Online Help You can click Help button when you have any configuration question during the configuring. System Login 1. Launch the Internet Explorer. 2. Type http:// and the IP address of the LevelOne GSW-2491TXM. Press “ Enter ”. 3. The login screen appears. 4. Key in the user name and password. ...
Page 69 - Port status
63 Port status In Port status, you can view every port status that depended on user setting and the negotiation result. 1. Link: “Down” is “No Link”. “UP” is “Link”. 2. State: display port statuses “disable” or “enable”. “Unlink” will be treated as “off ”. 3. Auto Negotiation: display the auto negot...
Page 70 - View the Port Information; see the port information.; Port Statistics; Click; button to clean all counts.
64 View the Port Information You can direct click the port on the Switch figure on the top of web page. Then, you will see the port information. Port information interface Port Statistics The following information provides a view of the current port statistic information. Click Clear button to clean...
Page 71 - Administrator; In Administrator function, it provides the following functions:
65 Port Statistics Administrator In Administrator function, it provides the following functions: IP Configuration, Switch Settings, Console Port Information, Port Controls, Trunking, Forwarding and Filtering, VLAN Configuration, Spanning Tree, Port Mirroring, SNMP Management, Security Manager, and 8...
Page 72 - IP Address; After reset the IP address, you must reboot the switch.; Switch Setting; will describe the configure detail in following.
66 Administrator interface IP Address User can configure the IP Settings and DHCP client function, than clicks Apply button. After reset the IP address, you must reboot the switch. IP configuration interface Switch Setting In Switch setting, it has three parts of setting – Basic, Advance, and Misc C...
Page 73 - Basic Switch Settings; Advanced Setting; MAC Address Table Entry
67 Basic Switch Settings In Basic Switch Setting, it displays the switch basic information. System Name: the name of switch. System Location: the switch physical location. System Description: the description of switch. Firmware Version: the switch’s firmware version. Kernel Version: the ke...
Page 74 - Default is 300 seconds.; Max Bridge Transmit Delay Bound Control:; limit the packets queuing time; Enable Low Queue Delay Bound:; limit the low priority packets queuing time; Broadcast Storm Filter:; configure broadcast storm control. Enable it and set
68 Default is 300 seconds. Max Bridge Transmit Delay Bound Control: limit the packets queuing time in switch. If enable, the packets queued exceed will be drop. This valid value are 1sec, 2 sec, 4 sec and off. Enable Low Queue Delay Bound: limit the low priority packets queuing time in switch. I...
Page 75 - Miscellaneous Setting; Collisions Retry Forever:
69 Priority Queue Service settings: select the priority queue service type. First Come First Service: the sequence of packets sent is depend on arrive order. All High before Low: the high priority packets sent before low priority packets. Weighted Round Ratio: select the preference given to ...
Page 76 - IGMP Theory of Operation; Auto mode needs to be enabled when
70 Switch Misc Config setting interface IGMP Theory of Operation The following three topologies detail how IGMP Query works and to be configured within a network: 1. Auto mode needs to be enabled when the router’s IP address is smaller than other switches in the subnet.
Page 78 - Console Port Information; Port Controls
72 Console Port Information Console is a standard UART interface to communicate with Serial Port. User can use windows HyperTerminal program to link the switch. Please refer to Console Management Æ Console login for detail steps. Console port information shows as follow: Bits per seconds: 9600 Data ...
Page 79 - button to apply all configuration.; Trunking
73 100K. 0: disable rate control. 1 ~ 1000: valid rate value. Out: fill in the port effective egress rate. The valid range is 0~1000. The unit is 100K. 0: disable rate control. 1 ~ 1000: valid rate value. 9. Priority: this static priority based on port, if you set the port is high priority, income...
Page 80 - Aggregator setting; Group ID
74 connection. This feature can expand bandwidth to a device on the network. LACP operation requires full-duplex mode, more detail information refers to IEEE 802.3ad. Aggregator setting 1. System Priority: a value used to identify the active LACP. The switch with the lowest value has the highest pri...
Page 81 - Aggregator Information; Aggregator Information State Activity
75 Trunking—Aggregator Setting interface Aggregator Information When you had setup the LACP aggregator, you will see relation information in here. Trunking – Aggregator Information interface Aggregator Information State Activity When you had setup the LACP aggregator, you can configure port state ac...
Page 82 - Active
76 can mark or un-mark the port. When you mark the port and click Apply button the port state activity will change to Active . Opposite is Passive . 1. Active: The port automatically sends LACP protocol packets. 2. Passive: The port does not automatically send LACP protocol packets, and responds onl...
Page 83 - Forwarding and Filtering; IGMP Snooping
77 Forwarding and Filtering IGMP Snooping The switch support IP multicast, you can enable IGMP protocol on web management’s switch setting advanced page, then display the IGMP snooping information in this page, you can view difference multicast group VID and member port in here, IP multicast address...
Page 84 - Static MAC Address; powered-off device is active on the network again.; MAC Address; column, enter the MAC address to and from which the port; Port Number; to associate with the MAC address.; button to delete unwanted MAC address.
78 IGMP Snooping interface Static MAC Address When you add a static MAC address, it remains in the switch's address table, regardless of whether the device is physically connected to the switch. This saves the switch from having to re-learn a device's MAC address when the disconnected or powered-off...
Page 85 - MAC filtering; based on the destination addresses.; box, enter the MAC address that wants to filter.
79 Static MAC Address interface MAC filtering MAC address filtering allows the switch to drop unwanted traffic. Traffic is filtered based on the destination addresses. 1. In MAC Address box, enter the MAC address that wants to filter. 2. VLAN ID: If tag-based (802.1Q) VLAN are set up on the switch, ...
Page 86 - VLAN configuration
80 MAC Filtering interface VLAN configuration A Virtual LAN (VLAN) is a logical network grouping that limits the broadcast domain. It allows you to isolate network traffic so only members of the VLAN receive traffic from the same VLAN members. Basically, creating a VLAN from a switch is logically eq...
Page 88 - to create a new VLAN group.
82 VLAN – PortBase interface 1. Click Add to create a new VLAN group. 2. Enter the VLAN name, group ID and select the members of VLAN group. 3. Click Apply . VLAN—PortBase Add interface
Page 89 - If the groups’ list is over one page, you can click; to view other VLAN; button to delete unwanted VLAN.; button to modify existing VLAN group.
83 4. You will see the VLAN displays. 5. If the groups’ list is over one page, you can click Next Page to view other VLAN groups. 6. Use Delete button to delete unwanted VLAN. 7. Use Edit button to modify existing VLAN group. 802.1Q VLAN Tagged-based VLAN is an IEEE 802.1Q specification standard. Th...
Page 90 - Basic; Enable GVRP Protocol:; check the check box to enable GVRP protocol.; and you can configure it is the member of the VLAN or not.
84 Basic 1. Click Add button. 2. Enable GVRP Protocol: check the check box to enable GVRP protocol. 3. Group Name: assign a name for the new VLAN. 4. VLAN ID: fill in a VLAN ID (between 2-4094). The default is 1. 5. Protocol VLAN: choose the protocol type. Default is NONE. 6. From the Available po...
Page 91 - Enable
85 8. To set the outgoing frames are VLAN-Tagged frames or untagged. Then click Apply . Tag: outgoing frames with VLAN-Tagged. Untag: outgoing frames without VLAN-Tagged. Port VID: Configure port VID settings 1. Port VLAN ID: enter the port VLAN ID. 2. Ingress Filtering: Ingress filtering lets...
Page 92 - Spanning Tree
86 802.1q VLAN – Port VLAN ID interface Spanning Tree The Spanning-Tree Protocol (STP) is a standardized method (IEEE 802.1d) for avoiding loops in switched networks. When STP enabled, to ensure that only one path at a time is active between any two nodes on the network. We are recommended that you ...
Page 94 - has higher priority.; Port Mirroring; ports will be duplicated into mirror port.; Port Mirroring State:
88 3. Assign the port priority value. The value range is from 0 to 255. The lowest value has higher priority. 4. Click Apply button. SPT – Per Port Configuration interface Port Mirroring The Port mirroring is a method for monitor traffic in switched networks. Traffic through ports can be monitored b...
Page 96 - SNMP Management; the system options data, and then click Apply to update the changes.; System Options; enter a name for the switch.
90 SNMP Management The SNMP is a Protocol that governs the transfer of information between management and agent. The switch supports SNMP V1. You can define management stations as trap managers and to enter SNMP community strings. You also can define a name, location, and contact person for the swit...
Page 97 - Community strings; Trap Manager; Security Manager
91 Community strings Serve as a password between trap manager and switch. 1. String: fill the name of string. 2. RO: Read only. Enables requests accompanied by this string to display MIB-object information. 3. RW: Read write. Enables requests accompanied by this string to display MIB-object inform...
Page 98 - Per port Configuration
92 802.1X When enabling the IEEE 802.1X function, you can configure the parameters of this function. System Configuration 1. Radius Server IP: set the Radius Server IP address. 2. Server Port: set the UDP destination port for authentication requests to the specified Radius Server. 3. Accounting Port...
Page 99 - Set the period during which the port doesn’t try to acquire a
93 Accept: the specified port is required to be held in the Authorized state. Authorized: the specified port is set to the Authorized or Unauthorized state in accordance with the outcome of an authentication exchange between the Supplicant and the authentication server. Disable: The specified ...
Page 100 - TFTP Update Firmware; TFTP Server IP Address:
94 authentication session. 3. Supplicant timeout: Set the period of time the switch waits for a supplicant response to an EAP request. 4. Server timeout: Set the period of time the switch waits for a server response to an authentication request. 5. Max requests: Set the number of authentication that...
Page 101 - Configuration Backup; you can backup the configuration to TFTP server.; TFTP server, switch will download back flash image.; fill in the TFTP server IP.
95 TFTP Update Firmware interface Configuration Backup In Configuration Backup, you can restore the backup configuration into the switch. Also, you can backup the configuration to TFTP server. TFTP Restore Configuration You can restore EEPROM value from TFTP server, but you must put back image in TF...
Page 103 - System Reboot; Reboot the Switch in software reset. Click; button to reboot the switch.; Panel List; IP Stacking; configuring the stacking function, beware the following points.
97 System Reboot Reboot the Switch in software reset. Click Apply button to reboot the switch. System Reboot interface Panel List Display the switch panel GUI. When the switch is in stacking status, it display the slaves panel GUI. When the switch is stand-alone status, it display itself panel GUI. ...
Page 105 - communicate and collect the data from the slave switches.
99 IP Stacking master switch configure finished interface 5. After you have configured the stacking function, use Cat. 5 cable to connect each switch in the stacking group. And wait for few minutes for the master switch to communicate and collect the data from the slave switches. 6. Connect to the m...
Page 106 - screen of the switch that you have selected.
100 IP Stacking Finished configuring interface 8. If you want to configure one of switch in stacking group, click the hyper link on the top of screen and login to the switch that you want to configure. You will see the screen of the switch that you have selected. Stacking group configuration interfa...
Page 107 - Incorrect connections; Faulty or loose cables
101 6. Troubleshooting This section is intended to help you solve the most common problems on the LevelOne GSW-2491TXM. Incorrect connections The switch port can auto detect straight or crossover cable when you link switch with other Ethernet device. For the RJ-45 connector should use correct UTP or...
Page 108 - network performance.; Diagnosing LED Indicators; find possible solutions.; Cabling; Category 3, 4 or 5 cable for 10Mbps connections or 100
102 at any time. Data path loops will cause broadcast storms that will severely impact your network performance. Diagnosing LED Indicators The Switch can be easily monitored through panel indicators to assist in identifying problems, which describes common problems you may encounter and where you ca...
Page 109 - Technical Specification; Standard
103 7. Technical Specification This section provides the specifications of The LevelOne GSW-2491TXM, and the following table lists these specifications. Standard IEEE802.3 10BASE-T IEEE802.3u 100BASE-TX/100BASE-FX IEEE802.3z Gigabit SX/LX IEE802.3ab Gigabit 1000T IEEE802.3x Flow Control and Back pre...