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TP-Link TL-SG2452 User Manual

48-port gigabit smart switch with 4 sfp slots
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See also: Reference Manual , User Manual
TL-SG2452
48-Port Gigabit Smart Switch
with 4 SFP Slots
Rev: 1.0.0
1910010787

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Summary of Contents for TP-Link TL-SG2452

  • Page 1 TL-SG2452 48-Port Gigabit Smart Switch with 4 SFP Slots Rev: 1.0.0 1910010787...

  • Page 2: Fcc Statement

    Specifications are subject to change without notice. is a registered trademark of TP-LINK TECHNOLOGIES CO., LTD. Other brands and product names are trademarks or registered trademarks of their respective holders. No part of the specifications may be reproduced in any form or by any means or used to make any derivative such as translation, transformation, or adaptation without permission from TP-LINK TECHNOLOGIES CO., LTD.

  • Page 3: Safety Information

    Safety Information  When product has power button, the power button is one of the way to shut off the product; When there is no power button, the only way to completely shut off power is to disconnect the product or the power adapter from the power source. ...

  • Page 4: Table Of Contents

    CONTENTS Package Contents ..........................1 Chapter 1 About this Guide......................2 Intended Readers ......................2 Conventions........................2 Overview of This Guide ....................2 Chapter 2 Introduction ........................5 Overview of the Switch ....................5 Main Features.......................5 Appearance Description ....................5 2.3.1 Front Panel ......................5 2.3.2 Rear Panel ......................6 Chapter 3 Login to the Switch.......................7 Login..........................7 Configuration ........................7...
  • Page 5 5.1.3 Port Security ....................24 5.1.4 Port Isolation ....................26 LAG ..........................26 5.2.1 LAG Table ......................27 5.2.2 Static LAG ......................28 Traffic Monitor ......................29 5.3.1 Traffic Summary....................29 5.3.2 Traffic Statistics ....................31 MAC Address......................32 5.4.1 Address Table ....................33 5.4.2 Static Address ....................34 5.4.3 Dynamic Address .....................35 5.4.4 Filtering Address ....................37 Chapter 6 VLAN..........................39...
  • Page 6 Multicast IP .........................78 8.2.1 Multicast IP Table .....................79 8.2.2 Static Multicast IP.....................79 Multicast Filter......................80 8.3.1 IP-Range......................81 8.3.2 Port Filter ......................81 Packet Statistics......................83 Chapter 9 QoS..........................85 DiffServ ........................88 9.1.1 Port Priority ......................88 9.1.2 Schedule Mode ....................89 9.1.3 802.1P Priority ....................90 9.1.4 DSCP Priority....................90 Bandwidth Control ......................92 9.2.1...
  • Page 7 11.3 Device Diagnostics ....................115 11.3.1 Cable Test ...................... 115 11.3.2 Loopback ....................... 116 11.4 Network Diagnostics ....................116 11.4.1 Ping........................ 116 11.4.2 Tracert......................117 Appendix A: Specifications ......................119 Appendix B: Configuring the PCs ....................120 Appendix C: Glossary.........................122...

  • Page 8: Package Contents

    One power cord  Two mounting brackets and other fittings  Installation Guide  Resource CD for TL-SG2452 switch, including:  This User Guide  Other Helpful Information Note: Make sure that the package contains the above items. If any of the listed items are damaged or...

  • Page 9: Chapter 1 About This Guide

    Chapter 1 About this Guide This User Guide contains information for setup and management of TL-SG2452 48-Port Gigabit Smart Switch with 4 SFP Slots. Please read this guide carefully before operation. 1.1 Intended Readers This Guide is intended for network managers familiar with IT concepts and network terminologies.
  • Page 10 Chapter Introduction Chapter 4 System This module is used to configure system properties of the switch. Here mainly introduces: System Info: Configure the description, system time and network  parameters of the switch. User Management: Configure the user name and password for ...
  • Page 11 Chapter Introduction Chapter 10 SNMP This module is used to configure SNMP function to provide a management frame to monitor and maintain the network devices. Here mainly introduces: SNMP Config: Configure global settings of SNMP function.  Notification: Configure notification function for the management ...

  • Page 12: Chapter 2 Introduction

    Chapter 2 Introduction Thanks for choosing the TL-SG2452 48-Port Gigabit Smart Switch with 4 SFP Slots! 2.1 Overview of the Switch Designed for workgroups and departments, TL-SG2452 from TP-LINK provides wire-speed performance and full set of layer 2 management features. It provides a variety of service features and multiple powerful functions with high security.

  • Page 13: Rear Panel

    No device is connected to the corresponding port. 2.3.2 Rear Panel The rear panel of TL-SG2452 features a power socket and a Grounding Terminal (marked with ). Figure 2-2 Rear Panel of TL-SG2452  Grounding Terminal: TL-SG2452 already comes with Lightning Protection Mechanism. You can ground the switch through the PE (Protecting Earth) cable of AC cord or with Ground Cable.

  • Page 14: Chapter 3 Login To The Switch

    Chapter 3 Login to the Switch 3.1 Login 1) To access the configuration utility, open a web-browser and type in the default address http://192.168.0.1 in the address field of the browser, then press the Enter key. Figure 3-1 Web-browser Tips: To log in to the switch, the IP address of your PC should be set in the same subnet addresses of the switch.
  • Page 15 Figure 3-3 Main Setup-Menu Note: Clicking Apply can only make the new configurations effective before the switch is rebooted. If you want to keep the configurations effective even the switch is rebooted, please click Save Config. You are suggested to click Save Config before cutting off the power or rebooting the switch to avoid losing the new configurations.

  • Page 16: Chapter 4 System

    Chapter 4 System The System module is mainly for system configuration of the switch, including four submenus: System Info, User Management, System Tools and Access Security. 4.1 System Info The System Info, mainly for basic properties configuration, can be implemented on System Summary, Device Description, System Time, Daylight Saving Time and System IP pages.

  • Page 17: Device Description

    Figure 4-2 Port Information Port Info  Port: Displays the port number of the switch. Type: Displays the type of the port. Rate: Displays the maximum transmission rate of the port. Status: Displays the connection status of the port. Click a port to display the bandwidth utilization on this port. The actual rate divided by theoretical maximum rate is the bandwidth utilization.

  • Page 18: System Time

    Figure 4-4 Device Description The following entries are displayed on this screen: Device Description  Device Name: Enter the name of the switch. Device Location: Enter the location of the switch. System Contact: Enter your contact information. 4.1.3 System Time System Time is the time displayed while the switch is running.

  • Page 19: Daylight Saving Time

    Note: The system time will be restored to the default when the switch is restarted and you need reconfigure the system time of the switch. 4.1.4 Daylight Saving Time Here you can configure the Daylight Saving Time of the switch. Choose the menu System→System Info→Daylight Saving Time to load the following page.

  • Page 20: System Ip

    Date Mode: Specify the DST configuration in Date mode. This configuration is one-off in use. Offset: Specify the time adding in minutes when Daylight  Saving Time comes. Start/End Time: Select starting time and ending time of  Daylight Saving Time. Note: When the DST is disabled, the predefined mode, recurring mode and date mode cannot be configured.

  • Page 21: User Management

    Management VLAN: Enter the ID of management VLAN, the only VLAN through which you can get access to the switch. By default VLAN1 owning all the ports is the Management VLAN and you can access the switch via any port on the switch. However, if another VLAN is created and set to be the Management VLAN, you may have to reconnect the management station to a port that is a member of the Management VLAN.
  • Page 22 switch. The Web management pages contained in this guide are subject to the admin’s login without any explanation. Choose the menu System→User Management→User Config to load the following page. Figure 4-9 User Config The following entries are displayed on this screen: User Info ...

  • Page 23: System Tools

    Operation: Click the Edit button of the desired entry, and you can edit the corresponding user information. After modifying the settings, please click the Modify button to make the modification effective. Access level and user status of the current user information can’t be modified.

  • Page 24: Firmware Upgrade

    4.3.3 Firmware Upgrade The switch system can be upgraded via the Web management page. To upgrade the system is to get more functions and better performance. Go to http://www.tp-link.com to download the updated firmware. Choose the menu System→System Tools→Firmware Upgrade to load the following page.

  • Page 25: System Reboot

    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 avoid losing the configuration unsaved Choose the menu System→System Tools→System Reboot to load the following page. Figure 4-13 System Reboot Note: To avoid damage, please don't turn off the device while rebooting.
  • Page 26 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 Web management page. IP-based: Select this option to limit the IP-range of the users for ...
  • Page 27 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, please login again. Access User Number  Select Enable/Disable the Number Control function. Number Control；...

  • Page 28: Chapter 5 Switching

    Chapter 5 Switching Switching module is used to configure the basic functions of the switch, including four submenus: Port, LAG, Traffic Monitor and MAC Address. 5.1 Port The Port function, allowing you to configure the basic features for the port, is implemented on the Port Config, Port Mirror, Port Security and Port Isolation pages.

  • Page 29: Port Mirror

    Description: Give a description to the port for identification. Status: Allows you to Enable/Disable the port. When Enable is selected, the port can forward the packets normally. Speed and Duplex: Select the Speed and Duplex mode for the port. The device connected to the switch should be in the same Speed and Duplex mode with the switch.
  • Page 30 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 ports. Operation: Click Edit to configure the mirror group.

  • Page 31: Port Security

    Mirrored Port  Port Select: Click the Select button to quick-select the corresponding port based on the port number you entered. Select: Select the desired port as a mirrored port. It is multi-optional. Port: Displays the port number. Ingress: Select Enable/Disable the Ingress feature. When the Ingress is enabled, the incoming packets received by the mirrored port will be copied to the mirroring port.
  • Page 32 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: Specify the maximum number of MAC addresses that can be learned on the port.

  • Page 33: Port Isolation

    Note: The Port Security function is disabled for the LAG port member. Only the port is removed from the LAG, will the Port Security function be available for the port. 5.1.4 Port Isolation Port Isolation provides a method of restricting traffic flow to improve the network security by forbidding the port to forward packets to the ports that are not on its forward portlist.

  • Page 34: Lag Table

    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. For the member ports in an aggregation group, their basic configuration must be the same. The basic configuration includes STP, QoS, VLAN, port attributes, MAC Address Learning mode and other associated settings.

  • Page 35: Static Lag

    Global Config  Hash Algorithm: Select the applied scope of Aggregate Arithmetic, which results in choosing a port to transfer the packets.  SRC MAC + DST MAC: When this option is selected, the Aggregate Arithmetic will apply to the source and destination MAC addresses of the packets.

  • Page 36: Traffic Monitor

    Figure 5-8 Manually Config The following entries are displayed on this screen: LAG Config  Group Number: Select a Group Number for the LAG. Description: Give a description to the LAG for identification. Member Port  Member Port: Select the port as the LAG member. Clearing all the ports of the LAG will delete this LAG.
  • Page 37 Figure 5-9 Traffic Summary The following entries are displayed on this screen: Auto Refresh  Auto Refresh: Allows you to Enable/Disable refreshing the Traffic Summary automatically. Refresh Rate: Enter a value in seconds to specify the refresh interval. Traffic Summary ...

  • Page 38: Traffic Statistics

    5.3.2 Traffic Statistics Traffic Statistics screen displays the detailed traffic information of each port, which facilitates you to monitor the traffic and locate faults promptly. Choose the menu Switching→Traffic Monitor→Traffic Statistics to load the following page. Figure 5-10 Traffic Statistics The following entries are displayed on this screen: Auto Refresh ...

  • Page 39: Mac Address

    Unicast: Displays the number of good unicast packets received or transmitted on the port. The error frames are not counted in. Alignment Errors: Displays the number of the received packets that have a bad Frame Check Sequence (FCS) with a non-integral octet (Alignment Error).

  • Page 40: Address Table

    This function includes four submenus: Address Table, Static Address, Dynamic Address and Filtering Address. 5.4.1 Address Table On this page, you can view all the information of the Address Table. Choose the menu Switching→MAC Address→Address Table to load the following page. Figure 5-11 Address Table The following entries are displayed on this screen: Search Option...

  • Page 41: Static Address

    5.4.2 Static Address The static address table maintains the static address entries which can be added or removed manually, independent of the aging time. In the stable networks, the static MAC address entries can facilitate the switch to reduce broadcast packets and remarkably enhance the efficiency of packets forwarding without learning the address.

  • Page 42: Dynamic Address

    MAC Address: Displays the static 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. The new port should be in the same VLAN.
  • Page 43 Figure 5-13 Dynamic Address The following entries are displayed on this screen: Aging Config  Auto Aging: Allows you to Enable/Disable the Auto Aging feature. Aging Time: Enter the Aging Time for the dynamic address. Search Option  Search Option: Select a Search Option from the drop-down list and click the Search button to find your desired entry in the Dynamic Address Table.

  • Page 44: Filtering 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 effective MAC address aging. The aging time that is too long or too short results decreases the performance of the switch. If the aging time is too long, excessive invalid MAC address entries maintained by the switch may fill up the MAC address table.
  • Page 45 Search Option  Search Option: Select a Search Option from the drop-down list and click the Search button to find your desired entry in the Filtering Address Table.  MAC: Enter the MAC address of your desired entry.  VLAN ID: Enter the VLAN ID number of your desired entry. Filtering Address Table ...

  • Page 46: Chapter 6 Vlan

    Chapter 6 VLAN The traditional Ethernet is a data network communication technology based on CSMA/CD (Carrier Sense Multiple Access/Collision Detect) via shared communication medium. Through the traditional Ethernet, the overfull hosts in LAN will result in serious collision, flooding broadcasts, poor performance or even breakdown of the Internet.

  • Page 47: Q Vlan

    6.1 802.1Q VLAN VLAN tags in the packets are necessary for the switch to identify packets of different VLANs. The switch works at the data link layer in OSI model and it can identify the data link layer encapsulation of the packet only, so you can add the VLAN tag field into the data link layer encapsulation for identification.
  • Page 48 （3） GENERAL: The GENERAL port can be added in multiple VLANs and set various egress rules according to the different VLANs. The default egress rule is UNTAG. The PVID can be set as the VID number of any VLAN the port belongs to. PVID ...

  • Page 49: Vlan Config

    6.1.1 VLAN Config On this page, you can view the current created 802.1Q VLAN. Choose the menu VLAN→802.1Q VLAN→VLAN Config to load the following page. Figure 6-3 VLAN Table To ensure the normal communication of the factory switch, the default VLAN of all ports is set to VLAN1.
  • Page 50 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. Check: Click the Check button to check whether the VLAN ID you entered is valid or not.

  • Page 51: Port Config

    Egress Rule: Select the Egress Rule for the VLAN port member. The default egress rule is UNTAG.  TAG: All packets forwarded by the port are tagged. The packets contain VLAN information.  UNTAG: Packets forwarded by the port are untagged. LAG: Displays the LAG to which the port belongs.
  • Page 52 Select the Link Type from the drop-down list for the port. Link Type:  ACCESS: The ACCESS port can be added in a single VLAN, and the egress rule of the port is UNTAG. The PVID is same as the current VLAN ID. If the current VLAN is deleted, the PVID will be set to 1 by default.

  • Page 53: Application Example For 802.1Q Vlan

    Configuration Procedure: Step Operation Description Set the link type for Required. On the VLAN→802.1Q VLAN→Port Config page, set the link type for the port based on its connected device. port. Create VLAN. Required. On the VLAN→802.1Q VLAN→VLAN Config page, click the Create button to create a VLAN. Enter the VLAN ID and the description for the VLAN.
  • Page 54 Configuration Procedure  Configure switch A  Step Operation Description Configure 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 Link Type of the ACCESS respectively ports Create VLAN10 Required.

  • Page 55: Chapter 7 Spanning Tree

    Chapter 7 Spanning Tree STP (Spanning Tree Protocol), subject to IEEE 802.1D standard, is to disbranch a ring network in the Data Link layer in a local network. Devices running STP discover loops in the network and block ports by exchanging information, in that way, a ring network can be disbranched to form a tree-topological ring-free network to prevent packets from being duplicated and forwarded endlessly in the network.
  • Page 56 Figure 7-1 Basic STP diagram STP Timers  Hello Time: Hello Time ranges from 1 to 10 seconds. It specifies the interval to send BPDU packets. It is used to test the links. Max. Age: Max. Age ranges from 6 to 40 seconds. It specifies the maximum time the switch can wait without receiving a BPDU before attempting to reconfigure.
  • Page 57 Comparing BPDUs  Each switch sends out configuration BPDUs and receives a configuration BPDU on one of its ports from another switch. The following table shows the comparing operations. Step Operation If the priority of the BPDU received on the port is lower than that of the BPDU if of the port itself, the switch discards the BPDU and does not change the BPDU of the port.
  • Page 58 stops forwarding data and the designated port of the upstream switch begins to forward data. The condition for the designated port to transit its port state rapidly: The designated port is  an edge port or connecting to a point-to-point link. If the designated port is an edge port, it can directly transit to forwarding state;...
  • Page 59 Figure 7-2 Basic MSTP diagram MSTP  MSTP divides a network into several MST regions. The CST is generated between these MST regions, and multiple spanning trees can be generated in each MST region. Each spanning tree is called an instance. As well as STP, MSTP uses BPDUs to generate spanning tree. The only difference is that the BPDU for MSTP carries the MSTP configuration information on the switches.

  • Page 60: Stp Config

    Figure 7-3 Port roles The Spanning Tree 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.
  • Page 61 The following entries are displayed on this screen: Global Config  STP: Select Enable/Disable STP function globally on the switch. Version: Select the desired STP version on the switch. STP: Spanning Tree Protocol.  RSTP: Rapid Spanning Tree Protocol.  MSTP: Multiple Spanning Tree Protocol.

  • Page 62: Stp Summary

    7.1.2 STP Summary On this page you can view the related parameters for Spanning Tree function. Choose the menu Spanning Tree→STP Config→STP Summary to load the following page. Figure 7-5 STP Summary 7.2 Port Config On this page you can configure the parameters of the ports for CIST Choose the menu Spanning Tree→Port Config to load the following page.
  • Page 63 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 configuration. It is multi-optional. Port: Displays the port number of the switch.

  • Page 64: Mstp Instance

    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 from the master port to the common root is the shortest path between this MST region and the common root.

  • Page 65: Instance Config

    Figure 7-7 Region Config The following entries are displayed on this screen: Region Config  Region Name: Create a name for MST region identification using up to 32 characters. Revision: Enter the revision from 0 to 65535 for MST region identification. 7.3.2 Instance Config Instance Configuration, a property of MST region, is used to describe the VLAN to Instance mapping configuration.

  • Page 66: Instance Port Config

    The following entries are displayed on this screen: Instance Table  Instance 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 configuration. It is multi-optional. Instance: Displays Instance ID of the switch.
  • Page 67 Figure 7-9 Instance Port Config The following entries are displayed on this screen: Port Config  Instance 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. Select: Select the desired port to specify its priority and path cost.

  • Page 68: Stp Security

    Global configuration Procedure for Spanning Tree function: Step Operation Description Make clear roles the switches Preparation. play spanning tree instances: root bridge designated bridge Globally configure MSTP Required. Enable Spanning Tree function on the switch parameters configure MSTP parameters Spanning Tree→STP Config→STP Config page.
  • Page 69 high-speed links may lead to low-speed links, and network congestion may occur. To avoid this, MSTP provides root protect function. Ports with this function enabled can only be set as designated ports in all spanning tree instances. When a port of this type receives BDPU packets with higher priority, it transits its state to blocking state and stops forwarding packets (as if it is disconnected from the link).
  • Page 70 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. It is multi-optional.

  • Page 71: Tc Protect

    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. Choose the menu Spanning Tree→STP Security→TC Protect to load the following page. Figure 7-11 TC Protect The following entries are displayed on this screen: TC Protect...
  • Page 72 On Spanning Tree→STP Config→Port Config page, enable MSTP function for the port. Configure the region name and Spanning Tree→MSTP Instance→Region the revision of MST region Config page, configure the region as TP-LINK and keep the default revision setting. Configure VLAN-to-Instance Spanning Tree→MSTP Instance→Instance...
  • Page 73 MSTP function for the port. Configure the region name and Spanning Tree→MSTP Instance→Region the revision of MST region Config page, configure the region as TP-LINK and keep the default revision setting. Configure VLAN-to-Instance On Spanning Tree→MSTP Instance→Instance mapping table of the MST region Config page, configure VLAN-to-Instance mapping table.
  • Page 74 links; the gray paths are the blocked links. For Instance 2 (VLAN 102, 104 and 106), the blue paths in the following figure are connected  links; the gray paths are the blocked links. Suggestion for Configuration  Enable TC Protect function for all the ports of switches. ...

  • Page 75: Chapter 8 Multicast

    Chapter 8 Multicast Multicast Overview  In the network, packets are sent in three modes: unicast, broadcast and multicast. In unicast, the source server sends separate copy information to each receiver. When a large number of users require this information, the server must send many pieces of information with the same content to the users.
  • Page 76 Multicast Address  1. Multicast IP Address: As specified by IANA (Internet Assigned Numbers Authority), Class D IP addresses are used as destination addresses of multicast 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.

  • Page 77: Igmp Snooping

    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) messages. When the up-stream device forwards down the multicast data, the switch is responsible for sending them to the hosts. IGMP Snooping is a multicast control mechanism, which can be used on the switch for dynamic registration of the multicast group.

  • Page 78: Snooping Config

    3. IGMP Leave Message The host, running IGMPv1, does not send IGMP leave message when leaving a multicast group, as a result, the switch can not get the leave information of the host momentarily. However, after leaving the multicast group, the host does not send IGMP report message any more, so the switch will remove the port from the corresponding multicast address table when its member port time times out.

  • Page 79: Port Config

    Figure 8-4 Basic Config The following entries are displayed on this screen: Global Config  IGMP Snooping: Select Enable/Disable IGMP Snooping function globally on the switch. Unknown Multicast: Select the operation for the switch to process unknown multicast, Forward or Discard. IGMP Snooping Status ...

  • Page 80: Vlan Config

    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 configuration. It is multi-optional.
  • Page 81 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 Time: Specify the aging time of the router port. Within this time, if the switch doesn’t receive IGMP query message from the router port, it will consider this port is not a router port any more.

  • Page 82: Multicast Vlan

    Router Port Time: Displays the router port time of the VLAN. Member Port Time: Displays the member port time of the VLAN. Leave Time: Displays the leave time of the VLAN. Router Port: Displays the router port of the VLAN. Note: The settings here will be invalid when multicast VLAN is enabled Configuration procedure:...
  • Page 83 Figure 8-7 Multicast VLAN 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 multicast VLAN. Router Port Time: Specify the aging time of the router port. Within this time, if the switch doesn’t receive IGMP query message from the router port, it will consider this port is not a router port any more.
  • Page 84 Configuration procedure: Step Operation Description Enable IGMP Snooping Required. Enable IGMP Snooping globally on the switch port Multicast→IGMP function Snooping→Snooping Config and Port Config page. Create a multicast VLAN Required. Create a multicast VLAN and add all the member ports and router ports to the VLAN on the VLAN→802.1Q VLAN page.

  • Page 85: Multicast Ip

    Configuration Procedure  Step Operation Description Create VLANs Create three VLANs with the VLAN ID 3, 4 and 5 respectively, and specify the description of VLAN3 as Multicast VLAN on VLAN→802.1Q VLAN page. Configure ports On VLAN→802.1Q VLAN function pages. For port 3, configure its link type as GENERAL and its egress rule as TAG, and add it to VLAN3, VLAN4 and VLAN5.

  • Page 86: Multicast Ip Table

    8.2.1 Multicast IP Table On this page you can view the multicast IP table on the switch. Choose the menu Multicast→Multicast IP→Multicast IP Table to load the following page. Figure 8-8 Multicast IP Table The following entries are displayed on this screen: Search Option ...

  • Page 87: Multicast Filter

    Choose the menu Multicast→Multicast IP→Static Multicast IP to load the following page. Figure 8-9 Static Multicast IP Table The following entries are displayed on this screen: Create Static Multicast  Multicast IP: Enter static multicast IP address. VLAN ID: Enter the VLAN ID of the multicast IP. Forward Port: Enter the forward port of the multicast group.

  • Page 88: Ip-Range

    When applying for a multicast group, the host will send IGMP report message. After receiving the report message, the switch will firstly check the multicast filter rules configured for the receiving port. If the port can be added to the multicast group, it will be added to the multicast address table; if the port can not be added to the multicast group, the switch will drop the IGMP report message.
  • Page 89 Choose the menu Multicast→Multicast Filter→Port Filter to load the following page. Figure 8-11 Port Filter The following entries are displayed on this screen: Port Filter 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 multicast filtering.

  • Page 90: Packet Statistics

    Configuration Procedure: Step Operation Description Configure IP-Range Required. Configure IP-Range filtered Multicast→Multicast Filter→IP-Range page. Configure multicast filter Optional. Configure multicast filter rules for ports on rules for ports Multicast→Multicast Filter→Port Filter page. 8.4 Packet Statistics On this page you can view the multicast data traffic on each port of the switch, which facilitates you to monitor the IGMP messages in the network.
  • Page 91 IGMP Statistics  Port Select: Click the Select button to quick-select the corresponding port based on the port number you entered. Port: Displays the port number of the switch. Query Packet: Displays the number of query packets the port received. Report Packet (V1): Displays the number of IGMPv1 report packets the port received.

  • Page 92: Chapter 9 Qos

    Chapter 9 QoS QoS (Quality of Service) functions to provide different quality of service for various network applications and requirements and optimize the bandwidth resource distribution so as to provide a network service experience of a better quality.  This switch classifies the ingress packets, maps the packets to different priority queues and then forwards the packets according to specified scheduling algorithms to implement QoS function.
  • Page 93 2. 802.1P Priority Figure 9-2 802.1Q frame As shown in the figure above, each 802.1Q Tag has 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 determines the priority of the packets based on the Pri value.
  • Page 94 Figure 9-4 SP-Mode WRR-Mode: Weight Round Robin Mode. In this mode, packets 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. WRR queue overcomes the disadvantage of SP queue that the packets in the queues with lower priority can not get service for a long time.

  • Page 95: Diffserv

    The QoS module is mainly for traffic control and priority configuration, including two submenus: DiffServ and Bandwidth Control. 9.1 DiffServ This switch classifies the ingress packets, maps the packets to different priority queues and then forwards the packets according to specified scheduling algorithms to implement QoS function. This switch implements three priority modes based on port, on 802.1P and on DSCP, and supports four queue scheduling algorithms.

  • Page 96: Schedule Mode

    Configuration Procedure: Step Operation Description Select the port priority Required. On QoS→DiffServ→Port Priority page, configure the port priority. Configure mapping Required. On QoS→DiffServ→802.1P Priority page, relation between the 802.1P configure the mapping relation between the 802.1P priority and TC priority and TC. Select a schedule mode Required.

  • Page 97: P Priority

    9.1.3 802.1P Priority On this page you can configure 802.1P priority. 802.1P gives the Pri field in 802.1Q tag a recommended definition. This field is used to divide packets into 8 priorities. When 802.1P Priority is enabled, the packets with 802.1Q tag are mapped to different priority levels based on 802.1P priority mode.
  • Page 98 Figure 9-9 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 datagram. It ranges from 0 to 63. Priority: Indicates the priority the packets with tag are mapped to.

  • Page 99: Bandwidth Control

    Configuration Procedure: Step Operation Description Log on to the DSCP Priority page Enable DP priority function Required. By default, the DSCP priority function is disabled. Map the DSCP priority to the Required. Select DSCP priority and the corresponding priority level priority level.

  • Page 100: Storm Control

    The following entries are displayed on this screen:  Rate Limit 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 Rate configuration. It is multi-optional. Port: Displays the port number of the switch.
  • Page 101 Figure 9-11 Storm Control The following entries are displayed on this screen:  Storm 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 Storm Control configuration. It is multi-optional.

  • Page 102: Chapter 10 Snmp

    Chapter 10 SNMP SNMP Overview  SNMP (Simple Network Management Protocol) has gained the most extensive application on the UDP/IP networks. SNMP provides a management frame to monitor and maintain the network devices. It is used for automatically managing the various network devices no matter the physical differences of the devices.
  • Page 103 SNMP v1: SNMP v1 adopts Community Name authentication. The community name is used to define the relation between SNMP Management Station and SNMP Agent. The SNMP packets failing to pass community name authentication are discarded. The community name can limit access to SNMP Agent from SNMP NMS, functioning as a password.

  • Page 104: Snmp Config

    management station. The specified User Name and the Auth/Privacy Password are used for SNMP Management Station to access the SNMP Agent, functioning as the password. SNMP module is used to configure the SNMP function of the switch, including three submenus: SNMP Config, Notification and RMON.

  • Page 105: Snmp View

    10.1.2 SNMP View The OID (Object Identifier) of the SNMP packets is used to describe the managed objects of the switch, and the MIB (Management Information Base) is the set of the OIDs. The SNMP View is created for the SNMP management station to manage MIB objects. Choose the menu SNMP→SNMP Config→SNMP View to load the following page.
  • Page 106 Choose the menu SNMP→SNMP Config→SNMP Group to load the following page. Figure 10-5 SNMP Group The following entries are displayed on this screen: Group Config  Group Name: Enter the SNMP Group name. The Group Name, Security Model and Security Level compose the identifier of the SNMP Group. The Groups with these three items the same are considered to be the same.

  • Page 107: Snmp User

    Notify View: Select the View to be the Notify View. The management station can receive trap messages of the assigned SNMP view generated by the switch's SNMP agent. Group Table  Select: Select the desired entry to delete the corresponding group. It is multi-optional.
  • Page 108 The following entries are displayed on this screen: User Config  User Name: Enter the User Name here. User Type: Select the type for the User.  Local User: Indicates that the user is connected to a local SNMP engine. ...

  • Page 109: Snmp Community

    10.1.5 SNMP Community SNMP v1 and SNMP v2c adopt community name authentication. The community name can limit access to the SNMP agent from SNMP network management station, functioning as a password. If SNMP v1 or SNMP v2c is employed, you can directly configure the SNMP Community on this page without configuring SNMP Group and User.

  • Page 110: Configuration Procedure

    Configuration Procedure: If SNMPv3 is employed, please take the following steps:  Step Operation Description Enable SNMP function globally. Required. On the SNMP→SNMP Config→Global Config page, enable SNMP function globally. Create SNMP View. Required. On the SNMP→SNMP Config→SNMP View page, create SNMP View of the management agent.

  • Page 111: Notification

    10.2 Notification With the Notification function enabled, the switch can initiatively report to the management station about the important events that occur on the Views (e.g., the managed device is rebooted), which allows the management station to monitor and process the events in time. The notification information includes the following two types: Trap ：...

  • Page 112: Rmon

    Type: Select the type for the notifications.  Trap: Indicates traps are sent.  Inform: Indicates informs are sent. The Inform type has a higher security than the Trap type. Retry: Specify the amount of times the switch resends an inform request.

  • Page 113: History Control

    RMON Group Function History Group After a history group is configured, the switch collects and records network statistics information periodically, based on which the management station can monitor network effectively. Event Group Event Group is used to define RMON events. Alarms occur when an event is detected.

  • Page 114: Event Config

    10.3.2 Event Config On this page, you can configure the RMON events. Choose the menu SNMP→RMON→Event Config to load the following page. Figure 10-10 Event Config The following entries are displayed on this screen: Event Table  Select: Select the desired entry for configuration. Index: Displays the index number of the entry.
  • Page 115 Figure 10-11 Alarm Config The following entries are displayed on this screen: Alarm Table  Select: Select the desired entry for configuration. Index: Displays the index number of the entry. Variable: Select the alarm variables from the drop-down list. Port: Select the port on which the Alarm entry acts.
  • Page 116 Interval: Enter the alarm interval time in seconds. Owner: Enter the name of the device or user that defined the entry. Status: Select Enable/Disable the corresponding alarm entry. Note: When alarm variables exceed the Threshold on the same direction continuously for several times, an alarm event will only be generated on the first time, that is, the Rising Alarm and Falling Alarm are triggered alternately for that the alarm following to Rising Alarm is certainly a Falling Alarm and vice versa.

  • Page 117: Chapter 11 Maintenance

    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 status of the memory and the CPU of switch. （2）...

  • Page 118: Memory Monitor

    Click the Monitor button to enable the switch to monitor and display its CPU utilization rate every four seconds. 11.1.2 Memory Monitor Choose the menu Maintenance→System Monitor→Memory Monitor to load the following page. Figure 11-2 Memory Monitor Click the Monitor button to enable the switch to monitor and display its Memory utilization rate every four seconds.

  • Page 119: Log Table

    Level Description Severity informational Informational messages debugging Debug-level messages Table 11-1 Log Level The Log function is implemented on the Log Table, Local Log, Remote Log and Backup Log pages. 11.2.1 Log Table The switch supports logs output to two directions, namely, log buffer and log file. The information in log buffer will be lost after the switch is rebooted or powered off whereas the information in log file will be kept effective even the switch is rebooted or powered off.

  • Page 120: Local Log

    11.2.2 Local Log Local Log is the log information saved in switch. By default, all system logs are saved in log buffer and the logs with severities from level_0 to level_4 are saved in log file meanwhile. On this page, you can set the output channel for logs.

  • Page 121: Backup Log

    Figure 11-5 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.

  • Page 122: Device Diagnostics

    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 log file. Please wait without any operation. 11.3 Device Diagnostics This switch provides Cable Test and Loopback functions for device diagnostics.

  • Page 123: Loopback

    Note: The Length displayed here is the length of pair cable not that of the physical cable. The test result is just for your reference. 11.3.2 Loopback Loopback test function, looping the sender and the receiver of the signal, is used to test whether the port of the switch is available as well as to check and analyze the physical connection status of the port to help you locate and solve network malfunctions.

  • Page 124: Tracert

    Figure 11-9 Ping The following entries are displayed on this screen: Ping Config  Destination IP: Enter the IP address of the destination node for Ping test. Ping Times: Enter the amount of times to send test data during Ping testing. The default value is recommended.
  • Page 125 Figure 11-10 Tracert The following entries are displayed on this screen: Tracert Config  Destination IP: Enter the IP address of the destination device. Max Hop: Specify the maximum number of the route hops the test data can pass through. Return to CONTENTS...

  • Page 126: Appendix A: Specifications

    Appendix A: Specifications IEEE802.3 10Base-T Ethernet IEEE802.3u 100Base-TX/100Base-FX Fast Ethernet IEEE802.3ab 1000Base-T Gigabit Ethernet Standards IEEE802.3z 1000Base-X Gigabit Ethernet IEEE802.3x Flow Control IEEE802.1p Priority IEEE802.1q VLAN Bridge Ethernet: 10Mbps HD，20Mbps FD Transmission Rate Fast Ethernet: 100Mbps HD，200Mbps FD Gigabit Ethernet: 2000Mbps FD 10Base-T: UTP/STP of Cat.

  • Page 127: Appendix B: Configuring The Pcs

    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 working, refer to the adapter’s manual if necessary. On the Windows taskbar, click the Start button, and then click Control Panel. Click the Network and Internet Connections icon, and then click on the Network Connections tab in the appearing window.
  • Page 128 The following TCP/IP Properties window will display and the IP Address tab is open on this window by default. Figure B-3 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.

  • Page 129: Appendix C: Glossary

    Appendix C: Glossary Boot Protocol (BOOTP) BOOTP is used to provide bootup information for network devices, including IP address information, the address of the TFTP server that contains the devices system files, and the name of the boot file. Class of Service (CoS) CoS is supported by prioritizing packets based on the required level of service, and then placing them in the appropriate output queue.
  • Page 130 “querier” and assumes responsibility for keeping track of group membership. IGMP Snooping Listening to IGMP Query and IGMP Report packets transferred between IP Multicast routers and IP Multicast host groups to identify IP Multicast group members. IGMP Query On each subnetwork, one IGMP-capable device will act as the querier — that is, the device that asks all hosts to report on the IP multicast groups they wish to join or to which they already belong.
  • Page 131 Remote Monitoring (RMON) RMON provides comprehensive network monitoring capabilities. It eliminates the polling required in standard SNMP, and can set alarms on a variety of traffic conditions, including specific error types. Rapid Spanning Tree Protocol (RSTP) RSTP reduces the convergence time for network topology changes to about 10% of that required by the older IEEE 802.1D STP standard.

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