Manuale d’uso / di manutenzione del prodotto TL-SL2428 del fabbricante TP-Link
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TL-SL2428 24-Port 10/100Mbp s + 4-Port Gigabit Smart Switch Rev: 1.0.0 1910010675.
COPYRIGHT & TRADEMARKS S pecifications ar e subject to change without notice. is a registered trademark of TP-LINK TECHNOLOGIES CO., L TD. Other brands and product names are trademarks or registered trademarks of t heir respective holders.
Safety Information When product has power button, the power butto n is one of the way to shu t off the product; When there is no power button, the only way to co mpletely shut off power is to disconnect the product or the power adapter from the power source.
CONTENTS Package C ontent s ............................................................................................................... ........... 1 Chapter 1 About this Guide ......................................................................
5.1.4 Port Isol ation .................................................................................................... 29 5.2 LAG .....................................................................................................................
8.2.1 Multicast IP T able ............................................................................................. 83 8.2.2 S tatic Multicast I P ............................................................................................. 84 8.3 Multicast Filter.
VI 1 1.3.1 Cable T e st ...................................................................................................... 122 1 1.3.2 Loopback .......................................................................................................
Package Content s The following items should be found in your box: One TL-SL2428 24-Port 10/100Mbps + 4-Port Gigabit Smart Switch One power cord Two mounting brackets and other fittings .
Chapter 1 About this Guide This User Guide contains in formation for setup and managem ent of TL-SL2428 switch. Please read this guide carefully before operation. 1.1 Intended Readers This Guide is intended for network managers fam iliar with IT concepts and network terminologies.
Chapter Introduction Chapter 4 System This module is used to c onfigure system properties of the switch. Here mainly introduces: System Info: Configure the description, system time, Daylight Saving T ime and network parameters of the switch.
Chapter Introduction Chapter 10 SNMP This module is used to configure SNMP function to provide a management frame to monitor and ma intain the network devices.
Chapter 2 Introduction Thanks for choosing the TL-SL2428 24-Port 10/ 100Mbps + 4-Port Gigabit Smart Switch! 2.1 Overview of the Switch Designed for workgroups and departments, TL- SL2428 from TP-LINK provides wire-speed performance and full set of layer 2 management featur es.
Rese t: With the Switch powered on, press Reset button for five seconds to reset the software setting to its factory default settings. 10/100Mbp s Port s: Designed to connect to the device with a bandwidth of 10Mbps or 100Mbps. Each has a corresponding 10/100M LED.
2.3.2 Rear Panel The rear panel of TL-SL2428 features a power socket and a Grounding T erminal (marked with ). Figure 2-2 Rear Panel Grounding T erminal: TL-SL2428 alread y comes with Li ghtning Protection Mechanism. Y ou can also ground the Switch through the PE (Protecti ng Earth) cable of AC cord or with Ground Cable.
Chapter 3 Login to the Switch 3.1 Login 1) T o access the configurat ion utility , open a web-browser and type in the default address http://192.168.0.
Figure 3-3 Main Setup-Menu Note: Clicking Appl y can only make the new conf igurations effective before the switch is rebooted. If you want to keep the configur ations effective even the switch is rebooted, please click Saving Config .
Chapter 4 System The System module is mainly for system confi guration of the switch, including four submenus: System Info , User Manage, System T ools and Access Security .
Indicates the 1000Mbps port is not connected to a device. Indicates the 1000Mbps port is at the speed of 1000Mbp s. Indicates the 1000Mbps port is at the speed of 10Mbp s or 100Mbps. Indicates the SFP port is not connected to a device. Indicates the SFP port is at the speed of 1000Mbps.
Figure 4-3 Bandwidth Utilization Bandwidth Utilization Rx: Select Rx to display the bandwidth utilization of receiving p ackets on this port. Tx: Select Tx to display the bandwi dth utilization of sending p ackets on this port.
Device Loca tion: Enter the location of the switch. System Cont act: Enter your contact information. 4.1.3 System T ime System T ime is the time displayed while th e switch is running. On this page you can confi gure the system time and the s ettings here will be used f or other time-based functions like ACL.
Figure 4-6 System T ime The following entries are displayed on this screen: DST St atus: Enable or Disable the DST . Predefined Mode: Select a predefined DST configuratio n. USA: First Sunday in April, 02:00 ~ Last Sunday in October , 02:00. Australia: First Sunday in October , 02:00 ~ First Sunday in April, 03:00.
4.1.5 System IP Each device in the network possesses a unique IP Address. Y ou can log on to the Web management page to operate the switch using this IP Address. The switch supports three modes to obtain an IP address: S tatic IP , DHCP and B OOTP . The IP address obtained using a new mode will replace the original IP address.
Note: 1. Changing the IP address to a dif ferent IP segment will interrupt the network communication, so please keep the new IP address in the sa me IP segment with the local network. 2. The switch o nly possesses an IP address. The IP address configured will replace the original IP address.
Figure 4-9 User Config The following entries are displayed on this screen: User Info User Name: Create a name for users’ login. Access Level: Select the access level to login. Admin: Admin can edit, modify and view all the settings of different functions.
4.3 System T ools The System T ools function, allo wing you to manage the configurat ion file of the switch, can be implemented on Config Restore , Config Backup , Firmware Upgrade , System Reboot and Syst em Rese t pages.
Figure 4-1 1 Config Backup The following entries are displayed on this screen: Config Backup Backup Config: Click the Backup Config button to save the current configuration as a file to your computer . Y ou are suggested to take this measure before upgrading.
4. After upgrading, the devic e will reboot automatically . 5. Y ou are suggested to backup t he configuration before upgradi ng. 4.3.4 System Reboot On this page you can reboot the switch and return to the login page. Please save the current configuration before rebooting to avoi d losing the confi guration unsaved.
Figure 4-15 Access Control The following entries are displayed on this screen: Access Control Config Control Mode: Select the control mode for users to log on to the W eb management page. IP-based: Select this option to lim it the IP-range of the users for login.
22 Session Config Session Timeout: If you do nothing with the Web management page within the timeout time, the system will log out automatically . If you want to reconfigure, pl ease login again. Access User Number Number Control ； Select Enable/Disable the Number Control function.
Chapter 5 Switching Switching module is used to conf igure the basic functi ons of the switch, in cluding four submenus: Port , LAG , T raffic Monitor and MAC Address . 5.1 Port The Port function, allowing you to configure the basic features fo r the port, is implemented on the Port Config , Port Mirror , Port Security and Port Isolation p ages.
Port: Displays the port numbe r . Description: Give a description to the port for identification. Statu s: Allows you to Enable/Dis able the port. When Enable is selected, the port can forward the packet s normally . Speed and Duplex: Select the S peed and Duplex mode for the port.
Figure 5-2 Mirroring Port The following entries are displayed on this screen. Mirror Group List Group: Displays the mirror group number . Mirroring: Displays the mirroring port number . Mode: Displays the mirror mode, the value will be "Ingress" or "Egress", Mirrored Port: Displays the mirrored port s.
Figure 5-3 Mirroring Port The following entries are displayed on this screen. Mirror Group Number: Select the mirror group number you want to configure.
enable d, the outgoing packet s sent by the mirrored port will be copied to the mirroring port. LAG: Displays the LAG number which the port belongs to. The LAG member can not be selected as the mirrored port or mirroring port. Note: 1. The LAG member can not be selected as the mirrored port or mirroring port.
Figure 5-4 Port Security The following entries are displayed on this screen: Port Security Select: Select the desired port for Port Security configuration. It is multi-optional. Port: Displays the port number . Max Learned MAC: S pecify the maximum number of MAC addresses that can be learned on the port.
Note: The Port Security function is di sabled for the LAG port member . Only the port is removed from the LAG , will the Port Security f unction be available for the port.
Port: Display the p ort number . Forward Portlist: Display the forwardlist. 5.2 LAG LAG (Link Aggregation Group) is to combine a number of ports together to make a single high-bandwidth data path, so as to implement the traffic load sharing among the member ports in the group and to enhance the connection reliability .
Figure 5-6 LAG T able The following entries are displayed on this screen: Global Config Hash Algorithm: Select the applied scope of Aggregate Arithmetic, which results in choosing a port to transfer the p ackets.
Figure 5-7 Detail Information 5.2.2 St atic LAG On this page, you can manua lly configure the LAG . Choose the menu Sw itch ing → LAG → St atic LAG to load the following page. Figure 5-8 S tatic LAG The following entries are displayed on this screen: LAG Config Group Number: Select a Group Number for the LAG .
Member Port Member Port: Select the port as the LAG member . Clearing all the ports of the LAG will delete this LAG . Tips: The LAG can be deleted by clearing its all member ports.
Refre sh Rate: Enter a value in seconds to specify the refresh interval. T raffic Summary Port Select: Click the Select button to quick-select the corresponding port based on the port number you entered. Port: Displays the port numbe r . Packets Rx: Displays the number of packet s received on the port.
The following entries are displayed on this screen: Auto Refresh Auto Refresh: Allows you to Enable/Disable refreshing the Traf fic Summary automatically .
5.4 MAC Address The main function of the switch is forwarding the packe ts to the correct ports based on the destination MAC address of the packets. Address T able contains the port-based MAC address information, which is the base for the switch to forward packet s quickly .
Figure 5-1 1 Address T able The following entries are displayed on this screen: Search Option MAC Address: Enter the MAC address of your desired entry . VLAN ID: Enter the VLAN ID of your desired entry . Port: Select the corresponding port number of your desired entry .
5.4.2 St atic Address The static address t able maintains the static address entries which can be added or removed manually , independe nt of the aging time.
is multi-optional. MAC Address: Displays the st atic MAC Address. VLAN ID: Displays the corresponding VLAN ID of the MAC address. Port: Displays the corresponding Port number of the MAC address. Here you can modify the port number to which the MAC address is bound.
Figure 5-13 Dynamic Address The following entries are displayed on this screen: Aging Config Auto Aging: Allows you to Enable/Disable t he Auto Aging feature.
Aging S t atus: Displays the Aging S tatus of the MAC address. Bind: Click the Bind button to bind the MAC address of your selected entry to the corresponding port statically . Tips: Setting aging time properly helps implement effect ive MAC address aging.
42 Search Option Search Option: Select a Search Option fr om the pull-down list and click the Search button to find your desired entry in the Filtering Address T able. MAC: Enter the MAC address of your desired entry . VLAN ID: Enter the VLAN ID number of your desired entry .
Chapter 6 VLAN The traditional Ethernet is a data network comm unication technology basi ng on CSMA/CD (Ca rrier Sense Multiple Access/Collision Detect) vi a shared communication medium.
received untagge d packets on the port and match the pa cket s with the 802.1Q VLAN. If a p acket is matched, the switch will add a corresponding VLAN tag to it and forward it in the corresponding VLAN. 6.1 802.1Q VLAN VLAN tags in the packet s are necessary for the sw itch to identify packet s of dif ferent VLANs.
（ 2 ） TRUNK : The TRUNK port can be added in multiple VL ANs, and the egress rule of the port is T A G . The TRUNK port is generally used to connect the cascaded network devices for it can receive and forward the packets of multiple VLANs. When the p ackets are forwarded by the TRUNK port, it s VLAN tag will n ot be changed.
IEEE 802.1Q VLAN functi on is implemented on the VLAN Config and Port Config p ages. 6.1.1 VLAN Config On this page, you can view the current created 802.
Figure 6-4 Create or Modify 802.1Q VLAN The following entries are displayed on this screen: VLAN Config VLAN ID: Enter the ID number of VLAN. Description: Give a description to the VLAN for identification. VLAN Members Port Select: Click the Select button to quick-select the corresponding entry based on the port number you entered.
Egress Rule : Select the Egress Rule for the VLAN port member . The default egress rule is UNT AG . T AG: All packets forwarded by the port are ta gged. The packet s contain VLAN information. UNT AG: Packets forwarded by the port LAG: Displays the LAG to which the port belongs.
Link T ype: Select the Link T ype from t he pull-down list for the port. ACCESS: The ACCESS port c an be added in a single VLAN, and the egress rule of the port is UNT AG . The PVID is same as the current VLAN ID. If t he current VLAN is deleted, the PVID will be set to 1 by default.
3 Modify/View VLAN. Optional. On the VLAN → 802.1Q VLAN → VLAN Config page, click the Edit/Det ail button to modify/view the information of the corresponding VLAN. 4 Delete VLAN Optional. On the VLAN → 802.1Q VLAN → VLAN Config page, select the desired entry to del ete the corresponding VLAN by clicking the Delete button.
Configuration Procedure Configure Switch A Ste p Operation Description 1 Configure the Link T ype of the ports Required. On VLAN → 802.1Q VLAN → Port Config page, configure the link type of Port 2, Port 3 and Port 4 as ACCESS, TRUNK and ACCESS respectively 2 Create VLAN10 Required.
Chapter 7 S p anning T ree STP (S panning T r ee Protocol), sub ject to IEEE 802.1 D standard, is to disbranch a ring n etwork in the Data Link layer in a local netwo rk.
Port: Port 3 is the root port of switch B and port 5 is the root port of switch C; port 1 is the designated port of switch A and por t 4 is the designated port of swit ch B; port 6 is the blocked port of switch C. Figure 7-1 Basic STP diagram STP T imers Hello T ime: Hello T ime ranges from 1 to 10 seconds.
STP Generation In the beginning In the beginning, each switch regards itself as the root, and generates a configuration BPDU for each port on it as a root, with the root path cost being 0, the ID of the designated bridge being that of the switch, and the designated port being itself.
Tips ： In a STP with stable top ology , only the root port and design ated port can forward data, and the other ports are blocked. The blo cked ports only can receive BPDUs. RSTP (R apid S p ann ing T ree P ro toco l), evo lve d fr om the 802 .1D STP stan dard, enable Ethernet ports to transit their states rapidl y .
Figure 7-2 Basic MSTP diagram MSTP MSTP divides a network into several MST r egions. The CST is generat ed between these MST regions, and multiple spanning trees can be generated in each MST region. Each spanning tress is called an instance. As well as STP , MSTP uses BPDUs to generate spanning tree.
Figure 7-3 Port roles The S panning T ree module is mainly for spanning tree configuration of the switch, including four submenus: STP Config , Port Config , MSTP Instance and STP Security . 7.1 STP Config The STP Config function, for global configuration of spanning trees on the switch, can be implemented on STP Config and STP Summary pages.
Figure 7-4 STP Config The following entries are displayed on this screen: Global Config STP: Select Enable/Disable STP f unction globally on the switch. V ersion: Select the desired STP version on the switch. STP: S panning Tree Protocol. RSTP: Rapid S panning T ree Protocol.
Max Hop s: Enter a value from 1 to 40 to set the maximum n umber of hops that occur in a specific region before the BPDU is discarded. The default value is 20 hops. Note: 1. The forward delay parameter and the network dia meter are correlated. A too small forward delay parameter may result in temporary loops.
Figure 7-5 STP Summary 7.2 Port Config On this page you can c onfigure the parameters of t he ports for CIST Choose the menu Sp anning T ree → Port Config to load the following page.
Figure 7-6 Port Config The following entries are displayed on this screen: Port Config Port Select: Click the Select button to quick-select the corresponding port based on the port number you entered. Select: Select the desired port for STP conf iguration.
Designated Port: Indicates the port that forwards packets to a downstream network segment or switch. Master Port: Indicates the port that connects a MST region to the common root. The path fr om the master port to the common root is the shortest path between this MST region and the common root.
Figure 7-7 Region Config The following entries are displayed on this screen: Region Config Region Name: Create a name for MST region identif ication using up to 32 characters. Revision: Enter the revision from 0 to 6553 5 for MST region identification.
The following entries are displayed on this screen: Inst ance T able Inst ance ID Select: Click the Select button to quick-select the corresponding Instance ID based on the ID number you entered. Select: Select the desired Instance ID for c onfiguration.
Figure 7-9 Instance Port Config The following entries are displayed on this screen: Port Config Inst ance ID: Select the desired instance ID for its port configuration. Port Select: Click the Select button to quick-select the corresponding port based on the port number you entered.
Note: The port status of one port in dif ferent spanning tree instances can be dif ferent. Global configuration Procedur e for S panning T ree function: Ste p Operation Description 1 Make clear roles the switches play in spanning tree instances: root bridge or designated bridge Preparation.
Root Protect A CIST and its secondary root bridges are usually located in the high-bandwidth core region. Wrong configuration or malicious attacks may resu lt in configuration BPD U p ackets with .
Figure 7-10 Port Protect The following entries are displayed on this screen: Port Protect Port Select: Click the Select button to quick-select the corresponding port based on the port number you entered. Select: Select the desired port for port protect configuration.
7.4.2 TC Protect When TC Protect is enabled for the port on Port Protect page, the TC threshold and TC protect cycle need to be configured on this page.
Configuration Procedure Configure Switch A: Ste p Operation Description 1 Configure ports On VLAN → 802.1Q VLAN page, configure the link type of the related ports as T runk, and add t he ports to VLAN 101 and VLAN 106. The detailed instructions can be found in the section 802.
Configure Switch C: Ste p Operation Description 1 Configure ports On VLAN → 802.1Q VLAN page, configure the link type of the related ports as T runk, and add t he ports to VLAN 101 and VLAN 106. The detailed instructions can be found in the section 802.
The topology diagram of the t wo instances af ter the topology is stable For Instance 1 (VLAN 101, 103 and 105), the red pa ths in the following figure are connected links; the gray paths ar e the blocked links.
Chapter 8 Multicast Multicast Overview In the network, packet s are sent in three modes: unicast, broadcas t and multicast. In unicast, the source server sends separate copy information to each receiver . When a large numbe r of users require this information, the serv er must send many pieces of info rmation with the same content to the users.
Multicast Address 1. Multicast IP Address: As specified by IANA (Internet Assigned Numbe rs Authority), Class D IP addresses are used as destination addresses of multic ast packets. The multicast IP addresses range from 224.0.0.0~239.255.255.255. The following table displays the range and description of several special multicast IP addresses.
VLAN ID Multicast IP Port Figure 8-3 Multicast Address T able IGMP Snooping In the network, the hosts apply to the near Router for joining (leaving) a multicast group by sending IGMP (Internet Group Management Protocol) me ssages.
it will be added to the multicast addr ess table with it s member port ti me specified; if the receiving port is already a member port, its mem ber port time will be directly reset.
Figure 8-4 Basic Config The following entries are displayed on this screen: Global Config IGMP Snooping: Select Enable/Disable IGMP S nooping function globally on the Switch. Unknown Multicast: Select the operation for the swit ch to process unknown m ulticast, Forward or Discard.
Figure 8-5 Port Config The following entries are displayed on this screen: Port Config Port Select: Click the Select button to quick-select the corresponding port based on the port number you entered. Select: Select the desired port for IGMP Snooping feature conf iguration.
Figure 8-6 VLAN Config The following entries are displayed on this screen: VLAN Config VLAN ID: Enter the VLAN ID to enable IGMP Snooping for the desired VLAN.
Router Port: Displays the router po rt of the VLAN. Note: The settings here will be invalid when multicast VLAN is enabled Configuration procedure: Ste p Operation Description 1 Enable IGMP Snooping function Required.
The following entries are displayed on this screen: Multicast VLAN Multicast VLAN: Select Enable/Disable Multicast VLAN feature. VLAN ID: Enter the VLAN ID of the multicas t VLAN.
3 Configur e p arameters for multicast VLAN Optional. Enable and configur e a multicast VLAN on the Multicast → IGMP Snoo ping → Multicast VLAN page.
Configuration Procedure Ste p Operation Description 1 Create VLANs Create three VLANs with the VLAN ID 3, 4 and 5 respectively , and specify the description of VL AN3 as Multicast VLAN on VLAN → 802.1Q VLAN page. 2 Configure ports On VLAN → 802.
Figure 8-8 Multicast IP T able The following entries are displayed on this screen: Search Option Multicast IP: Enter the multicast IP address the desired entry must carry . VLAN ID: Enter the VLAN ID the desired entry must carry . Port: Select the port number the desired entry must carry .
Figure 8-9 S tatic Multicast IP T able The following entries are displayed on this screen: Create St ati c Multicast Multicast IP: Enter static multicast IP address. VLAN ID: Enter the VLAN ID of the multicas t IP . Forward Port: Enter the forward port of the multicast group.
When applyi ng for a multicast group, the host will send IGMP report message. After receiving the report message, the switch will firstly check the mu lticast filter rules configured for the receiving port.
8.3.2 Port Filter On this page you can configure t he multicast filter rules for port. T ake the configuration on this page and the configuration on IP-R ange page together to fu nction to implement multicast filter function on the switch. Choose the menu Multicast → Multicast Filter → Port Filter to load the following page.
LAG: Displays the LAG number which the port belongs to. Note: 1. Multicast Filter feature can only have effect on the VLAN with IGMP Snooping enabled. 2. Multicast Filter feature has no effect o n static multicast IP . 3. Up to 15 IP-Ranges can be bound to one port.
The following entries are displayed on this screen: Auto Refresh Auto Refresh: Select Enable/Disable auto refresh feature. Refresh Period: Enter the time from 3 to 300 in seconds to specif y the auto refresh period.
Chapter 9 QoS QoS (Quality of Service) functi ons to provide different quality of service for various network applications and requirements and optim ize the bandwidth resource dist ribution so as to provide a network service experience of a better quality .
2. 802.1 P Priority Figure 9-2 802.1Q frame As shown in the figure above, each 802.1Q T ag ha s a Pri field, comprising 3 bits. The 3-bit priority field is 802.1p priority in the range of 0 to 7. 802.1P priority determi nes the priority of the packet s based on the Pri value.
Figure 9-4 SP-Mode 2. WRR-Mode: W eight Round Robin Mode. In this mode, packet s in all the queues are sent in order based on the weight value for each queue and every queue can be assured of a certain service time. The weight value indicates the occupied proportion of the resource.
The QoS module is mainly for traf fic control and priority configuration, including three submenus: DiffServ and Bandwidth Control . 9.1 DiffServ This switch classifies the ingr ess packets, map s the.
Note: T o complete QoS function confi guration, you have to go to the Schedule Mode page to select a schedule mode after the configurati on is finished on this page. Configuration Procedure: Ste p Operation Description 1 Log on to the Port Priority page 2 Select the desired ports for configuration Select the desired ports.
Priority Level T ag-id/CoS-id: Indicates the precedence level defined by IEEE802.1P and the CoS ID Queue TC-id: Indicates the priority level of egress queue the packet s with tag and CoS-id are mapped to.
Figure 9-8 DSCP Priority The following entries are displayed on this screen: DSCP Priority Config DSCP Priority: Select Enable or Disable DSCP Priority . Priority Level DSCP: Indicates the priority determined by the DS region of IP dat agram. It ranges from 0 to 63.
3 Map the DSCP priority to the priority level Required. Select DSCP priority and the corresponding priority level. 4 Select a schedule mode Required. Log on to the Schedule Mode page to select a schedule mode. 9.1.4 Schedule Mode On this page you can select a schedule mode for the switch.
9.2.1 Rate Limit Rate limit functions to control the ingress/egr ess traffic rate on each port via configuring the available bandwidth of each port. In this way , t he network bandwidth can be reasonably distributed and utilized. Choose the menu QoS → Bandwidth Control → Rate Limit to load the following page.
Egress Rat e(Kbps): Configure the bandwidth for sending packet s on the port. Y ou can select a rate from the dropdown list or select "Manual" to set Egress rate, the system will automatically select integral multiple of 64Kbps that closest to the rate you entered as the real Egress rate.
S torm Control Config Port Select: Click the Select button to quick-select the corresponding port based on the port number you entered. Select: Select the desired port for S tor m Control configuration. It is multi-optional. Port: Displays the port number of the Switch.
Chapter 10 SNMP SNMP Overvie w SNMP (Simple Network Management Protocol) has gained the most extens ive application on the UDP/IP networks. SNMP provides a managem ent frame to monitor and maintain the network devices. It is used for automatica lly managing the various network devices no matter the physical differences of the devices.
SNMP v1: SNMP v1 adopts Community Name authentic ation. The community name is used to define the relation between SNMP Management S tation and SNMP Agent. The SNMP packe ts failing to pass community name authentication are discarded. The community name can limit access to SNMP Agent from SNMP NMS, functioning as a p assword.
3. Create SNMP User The User is configured in a SNMP Group can manage the switch via the client program on management station. The specif ied User Name and the Auth/Privacy Password are used for SNMP Management S tation to access the SNMP Agent, functioning as the pa ssword.
Remote Engine Remote Engine ID: S pecify the Remote Engine ID fo r Switch. The Engine ID is a unique alphanumeric string used to id entify the SNMP engine on the remote device which rece ives informs from Switch. Note: The amount of Engine ID c haracters must be even.
View T a bl e Select: Select the desired entry to del ete the corresponding view . All the entries of a View will be deleted together . View N am e: Displays the name of the View entry . View T yp e: Displays the type of the View entry . MIB Object ID: Displays the OID of the View entry .
Securit y Level: Select the Security Level for the SNMP v3 Group. noAuthNoPri v: No authentic ation and no privacy security levels are used. authNoPriv: Only the authenticat ion security level is used. authPriv: Both the authentic ation and the privacy security levels are used.
Figure 10-6 SNMP User The following entries are displayed on this screen: User Config User Name: Enter the User Name he re. User T ype: Select the type for the User . Local User: Indicates that the user is connected to a local SNMP engine. Remote User: Indicates that the user is connected to a remote SNMP engine.
User T able Select: Select the desired entry to del ete the corresponding User . It is multi-optional. User Name: Displays the name of the User . User T ype: Displays the User T ype. Group Name: Displays the Group Name of the User . Security Model: Displays the Security Model of the User .
read-onl y: Management right of the Community is restricted to read-only, and changes cannot be made to the corresponding View. read-write: Management right of the Comm unity is read-write and changes can be made to the correspondin g View. MIB Vie w: Select the MIB V iew for the community to access.
If SNMPv1 or SNMPv2c is employed, please take the following step s: Ste p Operation Description 1 Enable SNMP function globally . Required. On the SNMP → SNMP Config → Global Config page, enable SNMP function globally . 2 Create SNMP View . Required.
Figure 10-8 Notification Config The following entries are displayed on this screen: Create Notification IP Address: Enter the IP Address of the management Host. UDP Port: Enter the number of the UDP por t used to send notifications. The UDP port functions with the IP address for the notification sending.
Notification T able Select: Select the desired entry to delete the corresponding management station. IP Address: Displays the IP Address of the management host. UDP Port: Displays the UDP port us ed to send notifications. User: Displays the User name of the management station.
Alarm Group Alarm Group is configured to m onitor the specific al arm variables. When the value of a monitored variable exceeds the threshold, an alarm eve nt is generated, which triggers the swit ch to act in the set way . The RMON Groups can be configured on the Histor y Control, Event Conf ig and Alarm Config pages.
Figure 10-10 Event Config The following entries are displayed on this s creen: Event T able Select: Select the desired entry for configuration. Index: Displays the index number of the entry . User: Enter the name of the User or the community to which the event belongs.
Figure 10-1 1 Alarm Config The following entries are displayed on this s creen: Alarm T able Select: Select the desired entry for configuration. Index: Displays the index number of the entry . Va r i a b l e : Select the alarm variable s form the pull-sown list.
Interval: Enter the alarm interv al time in seconds. Ow ner : Enter the name of the device or user that defined the entry . Statu s: Select Enable/Disable t he corresponding alarm entry .
Chapter 11 Maintenance Maintenance module, assembling the commonly used system tools to manage the switch, provides the convenient method to locate and solve the network problem. （ 1 ） System Monitor: Monitor the utilization stat us of the memory and the CPU of switch.
C lick the Monitor button to enable the switch to monitor and display its CPU utilization rate every four seconds. 11.1.2 Memor y Monitor Choose the menu Maintenance → S ystem Monitor → Memory Monitor to load the following p age.
notifications 5 Normal but significant con ditions informational 6 Informational messages debugging 7 Debug-level messages T able 1 1-1 L og Level The Log function is implemented on the Log T able , Local Log , Remote Log and Backup Log pages. 11.2.1 Log T able The switch supports logs output to two directions , namely , log buffer and log file.
Note: 1. The logs are classified into eight levels based on severity . The hi gher the information severity is, the lower the corresponding level is. 2. This page displays logs in the log buf fer , and at most 512 logs are displayed. 11.2.2 Local Log Local Log is the log information saved in switch.
Figure 1 1-5 Log Host The following entries are displayed on this screen: Log Host Index: Displays the index of the log host. The switch supports 4 log hosts. Host IP: Configure the IP for the log host. UDP Port: Displays the UDP port used for receiving/sending log information.
The following entry is displayed on this screen: Backup Log Backup Log: Click the Backup Log button to save the log as a file to your computer . Note: It will take a few minutes to backup the l og file. Please wait without any operation. 11.3 Device Diagnose This switch provides Cable T est and Loopback functions for device diagnose.
Note: 1. The Length displayed here is the length of pair cable not that of the physical cable. 2. The test result is just for your reference. 11.3.2 Loopback Loopback test function, looping the sender.
11.4.1 Ping Ping test function, testing the connectivit y between the switch and one node of the network, facilitates you to test the network connectivity and r eachability of the host so as to locate the network malfunctions. Choose the menu Maintenance → Netw ork Diagnose → Ping to load the following page.
Figure 1 1-10 T racert The following entries are displayed on this s creen: T racert Config Destination IP: Enter the IP address of the destination device.
Appendix A: Specifications IEEE802.3 10Base-T Ethernet IEEE802.3u 100Base-TX/100Bas e-FX Fast Ethernet IEEE802.3ab 1000Base-T Gigabit Ethernet IEEE802.
Appendix B: Configuring the PCs In this section, we’ll introduce how to install and configure the TCP/IP correctly in Windows 2000. First make sure your Ethernet Adapter is work ing, refer to the adapter ’s manual if necessary . 1. Configure TCP/IP comp onent 1) On the Windows taskbar , click the Start button, and then click Control Panel .
Figure B-2 5) The following TCP/IP Properties window will display and the IP Address tab is open on this window by default. 128.
129 Figure B-3 6) Select Use the following IP address . And the following items will be available. If the switch's IP address is 192.168.0.1, specify IP address as 192.168.0. x (x is from 2 to 254), and the Subnet mask as 255.255.255.0. Now: Click OK to save your settings.
Appendix C: Glossary Access Control List (ACL) ACLs can limit network traffic and restrict access to certain users or devices by checking each packet for certain IP or MAC (i.
Generic Multicast Regis tration Protocol (GMRP) GMRP allows network devices to register end stations with multic ast groups. GMRP requires that any participating network devic es or end stations comply with the IEEE 802.1p standard. Group Attribute Registration Protocol (GARP) See Generic Attribute Registration Protocol.
La yer 2 Data Link layer in the ISO 7-Layer Data Commun ica tions Protocol. This is related directly to the hardware interface for network devices and passes on traffic based on MAC addresses.
133 Secure Shell (SSH) A secure replacement for remote access functi ons, including Telnet. SSH can authenticate users with a cryptographic key, and encrypt data c onne ctions between manage ment clients and the switch.
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il TP-Link TL-SL2428 è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del TP-Link TL-SL2428 - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso TP-Link TL-SL2428 imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul TP-Link TL-SL2428 ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il TP-Link TL-SL2428, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del TP-Link TL-SL2428.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il TP-Link TL-SL2428. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo TP-Link TL-SL2428 insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
