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D-Link DES-3225G User Manual

D-Link DES-3225G User Manual

24-port fast ethernet switch
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DES-3225G
DES-3225GF
24-Port Fast Ethernet
Switch
User's Guide
First Edition (October, 1999)
6DES3225G.01
Printed In Taiwan
RECYCLABLE

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Summary of Contents for D-Link DES-3225G

  • Page 1 DES-3225G DES-3225GF 24-Port Fast Ethernet Switch User’s Guide First Edition (October, 1999) 6DES3225G.01 Printed In Taiwan RECYCLABLE...

  • Page 2: Wichtige Sicherheitshinweise

    Wichtige Sicherheitshinweise Bitte lesen Sie sich diese Hinweise sorgfältig durch. Heben Sie diese Anleitung für den spätern Gebrauch auf. Vor jedem Reinigen ist das Gerät vom Stromnetz zu trennen. Vervenden Sie keine Flüssig- oder Aerosolreiniger. Am besten dient ein angefeuchtetes Tuch zur Reinigung.
  • Page 3 18. Zum Netzanschluß dieses Gerätes ist eine geprüfte Leitung zu verwenden, Für einen Nennstrom bis 6A und einem Gerätegewicht gr• ßer 3kg ist eine Leitung nicht leichter als H05VV-F, 3G, 0.75mm2 einzusetzen.

  • Page 4: Limitation Of Liability

    This Warranty applies on the condition that the product Registration Card is filled out and returned to a D-Link office within ninety (90) days of purchase. A list of D-Link offices is provided at the back of this manual, together with a copy of the Registration Card.
  • Page 5 Registration Card. If a Registration Card for the product in question has not been returned to a D-Link office, then a proof of purchase (such as a copy of the dated purchase invoice) must be provided when requesting warranty service.
  • Page 6 D-Link's obligation under this warranty shall be a reasonable effort to provide compatibility, but D-Link shall have no obligation to provide compatibility when there is fault in the third-party hardware or software. D-Link makes no warranty that operation of its software products will be uninterrupted or absolutely error-free, and no warranty that all defects in the software product, within or without the scope of D-Link's applicable product documentation, will be corrected.

  • Page 7: Copyright Statement

    The product's Registration Card, provided at the back of this manual, must be sent to a D-Link office. To obtain an RMA number for warranty service as to a hardware product, or to obtain warranty service as to a software product, contact the D -Link office nearest you.
  • Page 8 This is a Class A product. In a domestic environment, this product may cause radio interference in which case the user may be required to take adequate measures. VCCI Warning BSMI Warning...

  • Page 9: Table Of Contents

        ABOUT THIS GUIDE ................V ..................... ERMS ’ ............. VERVIEW OF THIS UIDE INTRODUCTION ..................1 ..............1 THERNET ECHNOLOGY ............2 IGABIT THERNET ECHNOLOGY ................ 3 WITCHING ECHNOLOGY ........
  • Page 10 ................20 WITCH TO ..............21 WITCH TO UB OR WITCH 10BASE-T Device................23 100BASE-TX Device ................23 SWITCH MANAGEMENT CONCEPTS..........24 .............. 24 OCAL ONSOLE ANAGEMENT Diagnostic (console) port (RS-232 DCE) ..........25 IP A SNMP C ........
  • Page 11 Create/Modify User Accounts ..............59 View/Delete User Accounts ................ 61 ................. 62 ETTING WITCH Configuration..................62 Configure IP Address.................. 63 Configure Console ..................65 Configure Switch..................66 Configure Ports........
  • Page 12 Port Mirroring ..................135 Switch Settings ..................136 Filtering and Forwarding Table ..............139 Spanning Tree ..................147 IGMP Filtering ..................152 VLAN....................... 155 Trunk ....................... 161 Configure Management ........

  • Page 13: About This Guide

    24-port NWay Ethernet Switch User’s Guide BOUT UIDE This User’s guide tells you how to install your DES-3225G, how to connect it to your Ethernet network, and how to set its configuration using either the built-in console interface or Web-based management.
  • Page 14 24-port NWay Ethernet Switch User’s Guide ♦ Chapter 4, Connecting the Switch. Tells how you can connect the DES-3225G to your Ethernet network. ♦ Chapter 5, Switch Management. Talks about Local Console Management via the RS-232 DCE console port and other aspects about how to manage the Switch.

  • Page 15: Introduction

    24-port NWay Ethernet Switch User’s Guide NTRODUCTION This section describes the features of the Switch, as well as giving some background information about Ethernet/Fast Ethernet, Gigabit Ethernet, and switching technology. Fast Ethernet Technolog The growing importance of LANs and the increasing complexity of desktop computing applications are fueling the need for high performance networks.

  • Page 16: Gigabit Ethernet Technology

    24-port NWay Ethernet Switch User’s Guide Gigabit Ethernet Technolog Gigabit Ethernet is an extension of IEEE 802.3 Ethernet utilizing the same packet structure, format, and support for CSMA/CD protocol, full duplex, flow control, and management objects, but with a tenfold increase in theoretical throughput over 100Mbps Fast Ethernet and a one hundred-fold increase over 10Mbps Ethernet.

  • Page 17: Switching Technology

    24-port NWay Ethernet Switch User’s Guide technology and digital signal processing that will enable Gigabit Ethernet to eventually operate over unshielded twisted-pair (UTP) cabling, outfitting your network with a powerful 1000Mbps-capable backbone/server connection creates a flexible foundation for the next generation of network technology products.

  • Page 18: Features

    Today ’s switches are an ideal solution to most kinds of local area network congestion problems. Features The DES-3225G Switch was designed for easy installation and high performance in an environment where traffic on network number users increase continuously.

  • Page 19: Performance Features

    24-port NWay Ethernet Switch User’s Guide ♦ All ports can auto-negotiate (NWay) between 10Mbps/ 100Mbps, half-duplex or full duplex and flow control. ♦ One rear panel slide-in module interface for a 1-port 1000BASE-SX Gigabit Ethernet module connecting to another switch. ♦...

  • Page 20: Management

    24-port NWay Ethernet Switch User’s Guide ♦ Data forwarding rate 148,800pps per port at 100% of wire-speed for 100Mbps speed. ♦ Data filtering rate eliminates all error packets, runts, etc. at 14,880pps per port at 100% of wire-speed for 10Mbps speed. ♦...

  • Page 21: Unpacking And Setup

    This chapter provides unpacking and setup information for the Switch. Unpacking Open the shipping carton of the Switch and carefully unpack its contents. The carton should contain the following items: ♦ One DES-3225G 24-port NWay Ethernet Switch ♦ One 2-port 100BASE-TX Fast Ethernet module preinstalled on front panel (DES-3225GF includes a 1- port 100BASE-FX module preinstalled).

  • Page 22: Installation

    24-port NWay Ethernet Switch User’s Guide If any item is found missing or damaged, please contact your local D-Link reseller for replacement. Installation Use the following guidelines when choosing a place to install the Switch: ♦ The surface must support at least 5 kg.

  • Page 23: Rack Installation

    24-port NWay Ethernet Switch User’s Guide Figure 2-1. Installing rubber feet for desktop installation Rack Installation The DES-3225G can be mounted in an EIA standard-sized, 19-inch rack, which can be placed in a wiring closet with other equipment. To install, attach the mounting brackets on the switch ’s side panels (one on each side) and secure...

  • Page 24: Power On

    Figure 2-2B. Installing the switch on an equipment rack Power on The DES-3225G switch can be used with AC power supply 100-240 VAC, 50 - 60 Hz. The power switch is located at the rear of the unit adjacent to the AC power connector and the system fan.

  • Page 25: Power Failure

    24-port NWay Ethernet Switch User’s Guide ♦ The power LED indicator will blink while the Switch loads onboard software and performs a self-test. After approximately 20 seconds, the LED will light again to indicate the switch is in a ready state. ♦...

  • Page 26: Identifying External Components

    XTERNAL OMPONENTS This chapter describes the front panel, rear panel, optional plug-in modules, and LED indicators of the DES-3225G. Front Panel The front panel of the Switch consists of LED indicators, an RS-232 communication port, a slide-in module slot, two uplink ports, and 22 (10/100 Mbps) Ethernet/Fast Ethernet ports.

  • Page 27: Rear Panel

    24-port NWay Ethernet Switch User’s Guide ♦ An RS-232 DCE console port for setting up and managing the switch via a connection to a console terminal or PC using a terminal emulation program. ♦ A front-panel slide-in module slot for 10/100 Mbps Ethernet ports can accommodate...

  • Page 28: Side Panels

    24-port NWay Ethernet Switch User’s Guide Figure 3-3. Rear panel view of the Switch fitted with the optional Gigabit Ethernet slide-in modul ♦ The optional Gigabit Ethernet slide-in module has a 1000BASE-SX fiber port for connecting to another switch. ♦ The AC power connector is a standard three-pronged connector that supports the power cord.

  • Page 29: Optional Plug-In Modules

    Optional Plug-in Modules The DES-3225G 24-port NWay Ethernet Switch is able to accommodate a range of plug-in modules in order to increase functionality and performance. 100BASE-TX Module Figure 3-5.

  • Page 30: 100Base-Fx Fiber Module

    24-port NWay Ethernet Switch User’s Guide ♦ Supports Category 5 UTP or STP cable connections of up to 100 meters. 100BASE-FX Fiber Module Figure 3-6. 100BASE-FX one-port modul ♦ Front-panel module. ♦ Connects to 100BASE-FX devices at full or half-duplex. ♦...

  • Page 31: 100Base-Fx Fiber (Mtrj Type) Module

    24-port NWay Ethernet Switch User’s Guide 100BASE-FX Fiber (MTRJ Type) Module Figure 3-7. 100BASE-FX two-port modul ♦ Front-panel module. ♦ Connects to 100BASE-FX devices at full or half-duplex. ♦ Supports multi-mode fiber-optic cable connections of up to 412 meters in half-duplex or 2 km in full-duplex mode. 1000BASE-SX Gigabit Module Figure 3-8.

  • Page 32: Led Indicators

    24-port NWay Ethernet Switch User’s Guide LED Indicators The LED indicators of the Switch include Power, Console, Slot, Giga, Speed, and Link/Act. The following shows the LED indicators for the Switch along with an explanation of each indicator. Figure 3-9. The LED indicators ♦...
  • Page 33 24-port NWay Ethernet Switch User’s Guide ♦ Giga This indicator is lit green when a link is established. It blinks green when the Gigabit port is active. ♦ 100M These indicators are illuminated green when a 100 Mbps device is connected to any of the 24 ports or uplink port.

  • Page 34: Connecting The Switch

    Category 5 UTP or STP cabling for 100 Mbps Fast Ethernet connections). The end node should be connected to any of the twenty-two ports (1x - 22x) of the DES-3225G or to either of the two 100BASE-TX ports on the front-panel module that came preinstalled on the switch.

  • Page 35: Switch To Hub Or Switch

    24-port NWay Ethernet Switch User’s Guide 1X must remain vacant; if the bottom Uplink port is in use, Port 2X cannot be used. Figure 4-1. Switch connected to an End Nod The LED indicators for the port the end node is connected to are lit according to the capabilities of the NIC.
  • Page 36 24-port NWay Ethernet Switch User’s Guide crossover cable, the connection must be made from Uplink to Uplink, or from a crossed port to another crossed port. ♦ A 10BASE-T hub or switch can be connected to the Switch via a two-pair Category 3, 4 or 5 UTP/STP straight cable.

  • Page 37: 10Base-T Device

    24-port NWay Ethernet Switch User’s Guide 10BASE-T Device For a 10BASE-T device, the Switch’s LED indicators should display the following: ♦ 100M LED speed indicator is OFF. ♦ Link/Act indicator is ON. 100BASE-TX Device For a 100BASE-TX device, the Switch’s LED indicators should display the following: ♦...

  • Page 38: Switch Management Concepts

    Local Console Management Local console management involves the administration of the DES-3225G Switch via a direct connection to the RS- 232 DCE console port. This is an Out-Of-Band connection, meaning that it is on a different circuit than normal network communications, and thus works even when the network is down.

  • Page 39: Diagnostic (Console) Port (Rs-232 Dce)

    24-port NWay Ethernet Switch User’s Guide Hardware components in the Switch allow it to be an active part of a manageable network. These components include a CPU, memory for data storage, other related hardware, and SNMP agent firmware. Activities on the Switch can be monitored with these components, while the Switch can be manipulated to carry out specific tasks.

  • Page 40: Ip Addresses And Snmp Community Names

    24-port NWay Ethernet Switch User’s Guide IP Addresses and SNMP Community Names Each Switch has its own IP Address, which is used for communication with an SNMP network manager or other TCP/IP application (for example BOOTP, TFTP). You can change the default Switch IP Address to meet the specification of your networking address scheme.
  • Page 41 24-port NWay Ethernet Switch User’s Guide ◊ System resets ◊ Errors ◊ Status changes ◊ Topology changes ◊ Operation You can also specify which network managers may receive traps from the Switch by setting a list of IP Addresses of the authorized network managers.

  • Page 42: Mibs

    24-port NWay Ethernet Switch User’s Guide ♦ New Root This trap indicates that the Switch has become the new root of the Spanning Tree, the trap is sent by a bridge soon after its election as the new root. This implies that upon expiration of the Topology Change Timer the new root trap is sent out immediately after the Switch’s selection as a new root.
  • Page 43 24-port NWay Ethernet Switch User’s Guide Base module. Consequently, values for MIB objects can be retrieved from SNMP-based network manager software. In addition to the standard MIB-II, the Switch also supports its own proprietary enterprise MIB as an extended Management Information Base. These MIBs may also be retrieved by specifying the MIB’s Object-Identity (OID) at the network manager.

  • Page 44: Packet Forwarding

    24-port NWay Ethernet Switch User’s Guide Packet Forwarding The Switch learns the network configuration and uses this information to forward packets. This reduces the traffic congestion on the network, because packets, instead of being transmitted to all segments, are transmitted to the destination only.

  • Page 45: Filtering Database

    24-port NWay Ethernet Switch User’s Guide Filtering Database A switch uses a filtering database to segment the network and control communications between segments. It also filters packets off the network for intrusion control (MAC Address filtering). For port filtering, each port on the switch is a unique collision domain and the switch filters (discards) packets whose destination lies on the same port as where it originated.

  • Page 46: Spanning Tree Algorithm

    24-port NWay Ethernet Switch User’s Guide Spanning Tree Algorithm The Spanning Tree Algorithm (STA) in the Switch allows you to create alternative paths (with multiple switches or other types of bridges) in your network. These backup paths are idle until the Switch determines that a problem has developed in the primary paths.

  • Page 47: On The Bridge Level

    24-port NWay Ethernet Switch User’s Guide the Designated Bridges. On the port level, STA sets the Root Port and Designated Ports. Details are as follows: On the Bridge Level ♦ Root Bridge The switch with the lowest Bridge Identifier is the Root Bridge. Naturally, you will want the Root Bridge to be the best switch among the switches in the loop to ensure the highest network performance and reliability.

  • Page 48: On The Port Level

    24-port NWay Ethernet Switch User’s Guide the better the chance the Switch will be selected as the Root Bridge. On the Port Level ♦ Root Port Each switch has a Root Port. This is the port that has the lowest Path Cost to the Root Bridge. In case there are several such ports, then the one with the lowest Port Identifier is the Root Port.
  • Page 49 24-port NWay Ethernet Switch User’s Guide ♦ Bridge Hello Time The Hello Time can be from 1 to 10 seconds. This is interval between transmissions of BPDU packets sent by the Root Bridge to tell all other Switches that it is indeed the Root Bridge.

  • Page 50: Illustration Of Sta

    24-port NWay Ethernet Switch User’s Guide Illustration of STA A simple illustration of three Bridges (or the Switch) connected in a loop is depicted in Figure 5-1. In this example, you can anticipate some major network problems if the STA assistance is not applied. For instance, if Bridge 1 broadcasts a packet to Bridge 2, Bridge 2 will broadcast it to Bridge 3, and Bridge 3 will broadcast it to Bridge 1...and so on.
  • Page 51 24-port NWay Ethernet Switch User’s Guide Figure 5-1. Before Applying the STA Rule Figure 5-2. After Applying the STA Rule STA parameters Settings Effects Comment Bridge Priority lower the #, Increases chance of Avoid, if the switch is higher the becoming the Root used in workgroup priorit...

  • Page 52: Port Trunking

    Thus, when configuring the ports in a trunk group, you only need to configure the master port. The DES-3225G supports 3 trunk groups, which may include from 2 to 8 switch ports each, except for the third Switch Management Concepts...
  • Page 53 24-port NWay Ethernet Switch User’s Guide trunk group which consists of the 2 ports of the Slot 1, 100BASE-TX or 100BASE-FX front-panel module. The master port for the first group is preset as port 7, the master port for the second group is port 15 and the master port for the third group is the first port (1x) on the 2-port module.

  • Page 54: Vlan

    Switches that use a load-balancing scheme that sends the packets of a host-to- host data stream over multiple trunk ports cannot have a trunk connection with the DES-3225G switch. VLAN VLANs are a collection of users or ports grouped together in a secure, autonomous broadcast and multicast domain .

  • Page 55: Mac-Based Vlans

    Spanning Tree to be enabled on all ports and work normally. MAC-based VLANs The DES-3225G supports up to 12 MAC-based VLANs, which are by their nature, limited to the switch itself and the devices connected to it. Two key features inherent in MAC-based VLANs are flexibility and security.

  • Page 56: Port-Based Vlans

    (description) and add MAC addresses for the stations that will be members. Port-based VLANs The DES-3225G supports up to 96 port-based VLANs. Port- based VLANs limit traffic that flows into and out of switch ports. Thus, all devices connected to a port are members of...

  • Page 57: Vlan Segmentation

    24-port NWay Ethernet Switch User’s Guide transmit and receive VLAN traffic, and the difference between them provides network segmentation, while still allowing resources to be shared across more than one VLAN. VLAN Segmentation Take for example a packet that is transmitted by a machine on Port 1 that is a member of VLAN 2 and has the Port VLAN ID number 2 (PVID=2).
  • Page 58 24-port NWay Ethernet Switch User’s Guide VL AN 3 VL AN 2 VL A N 1 1 2 3 4 5 6 7 8 9 10 11 12 Port VIDs = 2 Port Port VIDs = 1 PVID = 3 G ra p h ics N e tw o rk W o rks ta tio n s...

  • Page 59: Vlans Spanning Multiple Switches

    24-port NWay Ethernet Switch User’s Guide packets to it to be printed. Ports 1, 2 and 3 send these packets on VLAN 1 (their PVID=1), and Ports 11 and 12 send these packets on VLAN 2 (PVID=2). The third VLAN (PVID=3) is used by the server to transmit files that had been requested on VLAN 1 or 2 back to the computers.
  • Page 60 24-port NWay Ethernet Switch User’s Guide Ingress port - A port on a switch where packets are flowing into the switch and VLAN decisions must be made. Basically, the switch examines VLAN information in the packet header (if present) and decides whether to forward the packet.
  • Page 61 24-port NWay Ethernet Switch User’s Guide      When switches maintaining the same VLANs are 802.1Q- compliant, it is possible to use tagging. Tagging puts 802.1Q VLAN information into each packet header, enabling other 802.1Q-compliant switches that receive the packet to know how to treat it.
  • Page 62 24-port NWay Ethernet Switch User’s Guide In the above example, step 4 is the key element. Because the packet has 802.1Q VLAN data encoded in it ’s header, the ingress port can make VLAN-based decisions about its delivery – whether server #2 is attached to a port that is a member of VLAN 2 and thus should the packet be delivered, the queuing priority to give to the packet, etc.

  • Page 63: Broadcast Storms

    24-port NWay Ethernet Switch User’s Guide packets, it would tag its own PVID onto the packet and use this information to make forwarding decisions. Thus, the packets coming from the non-compliant device would automatically be placed on the ingress ports VLAN and could only communicate with other ports that are members of this VLAN.

  • Page 64: Segmenting Broadcast Domains

    (below a falling threshold), the SNMP agent can remove the blocking condition, returning the port to its normal operational state. In the DES-3225G, the default rising threshold is set to 500 broadcast packets per second (pps), and the default falling Switch Management Concepts...
  • Page 65 24-port NWay Ethernet Switch User’s Guide threshold is set to 250pps. The thresholds and actions can easily be defined by using a normal SNMP management program or through the console interface. Switch Management Concepts...

  • Page 66: Using The Console Interface

    24-port NWay Ethernet Switch User’s Guide SING THE ONSOLE NTERFACE Your 24-port NWay Ethernet Switch supports a console management interface that allows you to set up and control your Switch, either with an ordinary terminal (or terminal emulator), or over the network using the TCP/IP TELNET protocol.

  • Page 67: Console Usage Conventions

    24-port NWay Ethernet Switch User’s Guide ♦ VT-100/ANSI compatible ♦ 9,600 baud ♦ 8 data bits ♦ No parity ♦ One stop bit ♦ No flow control You can also access the same functions over a TELNET interface. Once you have set an IP address for your Switch, you can use a TELNET program (in VT-100 compatible terminal mode) to access and control the Switch.

  • Page 68: First Time Connecting To The Switch

    24-port NWay Ethernet Switch User’s Guide that you use the tab key and backspace key for moving around console. 4. Items in UPPERCASE are commands. Moving the selection to a command and pressing Enter will execute that command, e.g. APPLY, etc. Please note that the command APPLY only applies for the current session.
  • Page 69 24-port NWay Ethernet Switch User’s Guide Figure 6-1. Initial screen, first time connecting to the Switch Note: There is no initial username or password. Leave the username and password fields blank. Press <Enter > or Return> in the Username and Password fields.

  • Page 70: User Accounts Management

    24-port NWay Ethernet Switch User’s Guide Figure 6-2. Main Menu The first user automatically gets Administrator privileges (See Table 6-1). It is recommended to create at least one Administrator-level user for the Switch. User Accounts Management From the screen above, move the cursor to the User Accounts Management menu and press Enter, then the Users Accounts Management menu appears.

  • Page 71: Saving Changes

    You are now ready to operate the Switch. Saving Changes The DES-3225G has two levels of memory normal RAM and non-volatile or NV-RAM. Settings need to be changed in all screens by clicking on the Apply button. When this is done,...
  • Page 72 24-port NWay Ethernet Switch User’s Guide the settings will be immediately applied to the switching software in RAM, and will immediately take effect. Some settings, though, require you to restart the switch before they will take effect. Restarting the switch will erase all settings in RAM and reload them from the NV-RAM.

  • Page 73: Logging Onto The Switch Console By Registered Users

    24-port NWay Ethernet Switch User’s Guide Logging Onto The Switch Console By Registered Users To log in once you have created a registered user, 1. Type in your username and press Enter. 2. Type in your password and press Enter. 3.
  • Page 74 24-port NWay Ethernet Switch User’s Guide Figure 6-4. User Accounts Management menu 1. Choose Create/Modify User Accounts. The following screen appears: Figure 6-5. Add/Modify User Account screen 2. Type in your Username and press Enter. 3. If you are a new user, type in the Old Password and press Enter.

  • Page 75: View/Delete User Accounts

    24-port NWay Ethernet Switch User’s Guide This method can also be used by an Administrator-level user to change another user’s password. View/Delete User Accounts Access to the console, whether using the console port or via TELNET, is controlled using a user name and password. Up to three of these user names can be defined.

  • Page 76: Setting Up The Switch

    24-port NWay Ethernet Switch User’s Guide To delete your user password: 1. Toggle the Delete field of the user you wish to remove to Yes. 2. Press APPLY to let the user deletion take effect. Setting Up The Switch This section will help prepare the Switch user by describing the Configuration, Update Firmware and Configuration Files, Save Changes, and System Utilities menus and their respective sub-menus.

  • Page 77: Configure Ip Address

    24-port NWay Ethernet Switch User’s Guide Figure 6-7. Configuration menu You will need to change some settings to allow you to be able to manage the Switch from an SNMP-based Network Management System such as SNMP v1 or to be able to access the Switch using the TELNET protocol.
  • Page 78 24-port NWay Ethernet Switch User’s Guide Figure 6-8. IP Configuration screen The fields listed under the Current Settings heading are those that are currently being used by the switch. Those fields listed under the Restart Settings heading are those which will be used after the switch has been Reset. Fields that can be set include: ♦...

  • Page 79: Configure Console

    24-port NWay Ethernet Switch User’s Guide ♦ Default Gateway IP address that determines where frames with a destination outside the current subnet should be sent. This is usually the address of a router or a host acting as an IP gateway. If your network is not part of an internetwork, or you do not want the Switch to be accessible outside your local network, you can leave this field unchanged.

  • Page 80: Configure Switch

    24-port NWay Ethernet Switch User’s Guide Settings on Restart: ♦ Console Timeout This setting for the restart of the console is 15 mins, 30 mins, 45 mins, 60 mins, or Never. ♦ Serial Port Determines whether the serial port should be used for out-of-band (SLIP) management or for console management, starting from the next time the Switch is restarted.
  • Page 81 24-port NWay Ethernet Switch User’s Guide Figure 6-10. Switch Configuration screen The fields you can set are: ♦ System Name Corresponds to the SNMP MIB II variable , and is used to give a system.sysName name to the Switch for administrative purposes. The Switch’s fully qualified domain name is often used, provided a name has been assigned.
  • Page 82 24-port NWay Ethernet Switch User’s Guide Advanced Settings The Configure Advanced Switch Features screen allows you to set an expiration time for MAC address entries and enable or disable auto-partitioning on all ports. Click on ADVANCED SETTINGS on the Switch Configuration window to access the Configure Advanced Switch Features screen: Figure 6-11.

  • Page 83: Configure Ports

    24-port NWay Ethernet Switch User’s Guide Line blocking occurs when a packet originating on Port 1, for instance, needs to be forwarded to Ports 2 and 3. If Port 2 is occupied (causing the packet to be held in memory until the port is free), the packet destined for Port 3 will also be delayed, even though the port may be free.
  • Page 84 24-port NWay Ethernet Switch User’s Guide Items in the above window are defined as follows: ♦ Port Specifies the port (1-22,all) that will be configured. When all is chosen, the settings you configure will be applied to all UTP ports. ♦...
  • Page 85 24-port NWay Ethernet Switch User’s Guide latency can produce distorted sounds and images. Packets in the low priority queue will not be processed unless the High priority queue is empty. Setting the port priority to high will deliver all packets arriving at the port to the high priority queue, a low setting will send them all to the low priority queue.
  • Page 86 24-port NWay Ethernet Switch User’s Guide ♦ Broadcast Storm Rising Threshold This setting defines a ceiling for the number of broadcast packets per second on this port. Once met, the Broadcast Storm Rising Action (above) will be triggered. The assigned number should be high enough to allow normal broadcast packets (which...

  • Page 87: Configure Slot1 Module

    24-port NWay Ethernet Switch User’s Guide traffic) to be let through as early as possible, while being low enough so that broadcast storms are completely eliminated. Press CTRL+S to let the changes take effect. If you wish these changes to be the default for the switch, return to the main menu and choose Save Changes.
  • Page 88 24-port NWay Ethernet Switch User’s Guide Figure 6-13. Slot1-Port Configuration screen ♦ Port field specifies either Slot1-TP1, the Port 1x port or Slot1-TP2, the Port 2x port on the module. For single-port modules, only Slot1-TP1 will be available. ♦ State Enables or Disables this port. ♦...
  • Page 89 24-port NWay Ethernet Switch User’s Guide ♦ Port Lock When locked, automatic learning for all stations connected to this port will stop and entries in the Forwarding Table for all devices residing on this port will age out. The only traffic this port will allow is traffic from machines whose MAC address is manually entered in the Static Forwarding Table.

  • Page 90: Configure Slot2 Module

    24-port NWay Ethernet Switch User’s Guide STP Port State and Status reflect the current conditions of the port. They are read-only fields and cannot be changed. Configure Slot2 Module This screen allows you to change the port state of the optional 1000BASE-SX module in slot 2.
  • Page 91 24-port NWay Ethernet Switch User’s Guide ♦ Speed/Duplex This field is read-only since the Gigabit Ethernet module must always be set to 1000Mbps, full-duplex. ♦ Flow Control Enables or disables IEEE 802.1x full- duplex (only) flow control on this port. See Flow Control in the Configure Ports section above for a more detailed explanation.

  • Page 92: Configure Port Mirroring

    24-port NWay Ethernet Switch User’s Guide configured to Do Nothing, Forward or Forward and Trap. See Broadcast Storm Falling Action in the Configure Ports section of this manual for a more detailed explanation. ♦ Broadcast Storm Falling Threshold This setting defines the number of broadcast packets per second on this port which will trigger the Broadcast Storm Falling Action (above).

  • Page 93: Configure Spanning Tree Protocol

    24-port NWay Ethernet Switch User’s Guide Figure 6-15. Configure Port Mirroring screen To configure a mirror port, select the port from where you want to copy frames in the Source Port field. Then select the port which receives the copies from the source port in the Target Port field.
  • Page 94 24-port NWay Ethernet Switch User’s Guide Parameters allow you to change the behind the scene parameters of the Spanning Tree Algorithm at the bridge level. The parameters for this section have been fully explained in Chapter 5’s Switch Management, see Operation Levels: On the Bridge level, and User-Changeable Parameters.
  • Page 95 24-port NWay Ethernet Switch User’s Guide Figure 6-17. STP Parameters Setting screen The information on the screen is described as follows: ♦ Spanning Tree Protocol Enables or disables the Spanning Tree Protocol. ♦ Time Since Topology Changes (sec) Read-only object displays the last time changes were made to the network topology.
  • Page 96 24-port NWay Ethernet Switch User’s Guide ♦ Root Cost Read-only object displays the cost for the path between the switch and the root bridge. If the switch is the root bridge, then the root cost is zero. ♦ Root port Read-only object identifies the port (on the bridge) that offers the least path cost from the bridge to the root bridge.
  • Page 97 24-port NWay Ethernet Switch User’s Guide ♦ Max Age (6-40 sec) Maximum Age is a read-write object that can be set from 6 to 40 seconds. At the end of the Maximum Age, if a BPDU has still not been received from the Root ridge, your Switch will start sending its own BPDU to all other switches for permission to become the Root Bridge.
  • Page 98 24-port NWay Ethernet Switch User’s Guide STP Port Contro To change the parameters on individual ports: 1. Choose Configure Spanning Tree Protocol from the Configuration menu. 2. Choose Port Control from the Configure Spanning Tree Protocol menu. The following screen appears: Figure 6-18.

  • Page 99: Configure Filtering And Forwarding Table

    24-port NWay Ethernet Switch User’s Guide more chance the bridge has of becoming the root port. Zero is the highest priority. Configure Filtering and Forwarding Table When a packet hits the Switch, it looks in the filtering and forwarding table to decide what to do with the packet; either to filter it off the network, or to forward it through the port on which its destination lies.
  • Page 100 24-port NWay Ethernet Switch User’s Guide Figure 6-19. Configure Filtering and Forwarding table screen The following fields at the top of the screen can be set: ♦ Lock Address Table (Stops Auto-Learning) Mostly used for security purposes, when the forwarding table is locked the Switch will no longer learn the MAC addresses for new hosts.
  • Page 101 24-port NWay Ethernet Switch User’s Guide ♦ MAC Address Aging Enter the desired MAC address age-out time in this field (10 to 9999 seconds). Please refer to the Packet Forwarding section of the Switch Management Concepts chapter of this manual for more detailed information.
  • Page 102 24-port NWay Ethernet Switch User’s Guide device through a specific port, even after long periods of network inactivity or during times of network congestion. ♦ Action Choose to Add or Remove an entry from the table. ♦ MAC Address a total of ten destination addresses per page will be seen.
  • Page 103 24-port NWay Ethernet Switch User’s Guide Figure 6-21. Static Filtering Table screen To make a change to the Custom Filtering Table, choose Add or Remove in the Action field. Then enter the MAC Address and press APPLY. Configure Static Multicast Filtering Multicast filtering allows you to block or forward traffic over each port for one multicast group.

  • Page 104: Configure Igmp Filtering

    24-port NWay Ethernet Switch User’s Guide Figure 6-22. Static Multicast Filtering Tabl screen To make a change to the Static Filtering Table, choose Add or Remove in the Action field. Then enter the MAC Address, and press <space bar> for the corresponding Port number in one of the five fields: 1-6, 7-14, 15-22, S1, and S2.
  • Page 105 24-port NWay Ethernet Switch User’s Guide must also define which 802.1Q VLANs (if present) can send and receive IGMP and Multicast packets. access IGMP Configuration screen, choose Configure IGMP Filtering from the Configuration menu. The follow screen appears: Figure 6-23. IGMP Configuration screen Items in the above window are defined as follows: ♦...
  • Page 106 24-port NWay Ethernet Switch User’s Guide IGMP Snooping, which enables the switch to read IGMP packets being forwarded through the switch in order to obtain forwarding information from them (learn which ports contain Multicast members). ♦ Configure 802.1Q IGMP The window which opens after this option is chosen allows IGMP to operate in conjunction with IEEE 802.1Q VLANs .
  • Page 107 24-port NWay Ethernet Switch User’s Guide The above window is used to specify an agent to interface between IGMP and VLAN. The agents are assigned to a VLAN and allow IGMP query and report packets to be present on the given VLAN. Only 12 agents can exist on the switch at any one time.

  • Page 108: Configure Vlan

    24-port NWay Ethernet Switch User’s Guide Items in the above window are defined as follows: ♦ VLAN ID This is the VID number for the VLAN that has an agent attached to it which enables IGMP packets to be sent and received. ♦...
  • Page 109 24-port NWay Ethernet Switch User’s Guide a particular VLAN mode - either port-based 802.1Q or MAC- based, or to disable VLANs on the switch. Please note that the switch can only support either port-based VLANs or MAC-based VLANs at any given time; it cannot support both types of VLANs at the same time.
  • Page 110 24-port NWay Ethernet Switch User’s Guide the switch will implement the type of VLANs chosen here. ♦ Management VID This is the VLAN that will be used for management packets. Make sure the switch port that the network management station is connected to is a member of this 802.1Q VLAN (VID).
  • Page 111 24-port NWay Ethernet Switch User’s Guide Figure 6-26. Create/Remove a MAC-based VLAN screen The fields you can set are: ♦ Action Adds or Removes a MAC-based VLAN. ♦ VLAN Description Enter the name or number of the VLAN. This will be the identifier for this VLAN. Press APPLY to create/remove the designated MAC-Based VLAN.
  • Page 112 24-port NWay Ethernet Switch User’s Guide Figure 6-27. Configure a MAC-based VLAN screen To configure a VLAN, highlight the desired entry on the screen above and press ENTER. The following MAC-Based VLAN---MAC Assignment screen appears: Figure 6-28. MAC-Based VLAN—MAC Assignment screen Using the Console Interface...
  • Page 113 24-port NWay Ethernet Switch User’s Guide The fields you can set are: ♦ Action Select the desired action by toggling between Add and Remove. ♦ MAC Address The MAC address of the VLAN member being added or removed. Please note that the Status field for the MAC address you have entered may read Not-Apply.
  • Page 114 24-port NWay Ethernet Switch User’s Guide 2. Define which ports will be active members of the VLAN. A port can transmit packets onto only one VLAN. It can receive packets (be a passive member) on many VLANs. Active VLANs designations defined assigning Port VLAN ID numbers (PVIDs) in the Configure Port VLAN ID screen.
  • Page 115 24-port NWay Ethernet Switch User’s Guide Figure 6-30. Ingress Filtering screen This screen allows you Enable/disable Ingress filtering for each port. When a packet arrives at the port and Ingress filtering is enabled, the port will check the VLAN ID number of the packet, and it’s own VID’s.
  • Page 116 24-port NWay Ethernet Switch User’s Guide Figure 6-31. Port VLAN assignment screen This screen allows you to set a Port VLAN ID number (PVID) for each port. Press CTRL+S to let the changes take effect. Choose Configure Static VLAN Entry to access the third item on the 802.1Q VLAN Configuration menu.
  • Page 117 24-port NWay Ethernet Switch User’s Guide Figure 6-32. 802.1Q Static VLAN Settings screen The fields you can set are: ♦ VID Enter a VLAN ID from 2 to 2048. This is the VLAN that will be defined on this screen. ♦...

  • Page 118: Configure Trunk

    24-port NWay Ethernet Switch User’s Guide VLAN Name, and Tag/Untag, Egress (membership) status for all ports. Configure Trunk Ports on the switch can be grouped together in a single logical port called a trunk. This is discussed in detail in the Port Trunking section of the Switch Management Concepts chapter of this manual.

  • Page 119: Update Firmware And Configuration Files

    24-port NWay Ethernet Switch User’s Guide ♦ Width Select between 2 to 8 ports in the first two entries for this field. The number of ports defined here start from the master port and count up. Thus, in the example pictured above containing a width of 5 ports in the first trunk, the ports in the trunk group will include ports 7 (master), 8, 9, 10 and 11.
  • Page 120 24-port NWay Ethernet Switch User’s Guide Figure 6-34. Update Firmware and Configuration Files screen After making your changes in the fields above, press RESET SWITCH TO START UPDATE to initiate the update sequence. The fields you can set are: ♦ TFTP Server Address The IP address of the TFTP server where the runtime (switching software) or configuration file is located.

  • Page 121: System Utilities

    24-port NWay Ethernet Switch User’s Guide is reset (rebooted). The configuration file is explained in detail in the Sample Configuration File Appendix. ♦ Config File Name The complete path and filename on the TFTP server for configuration file to be used. System Utilities The Utilities menu offers three system utility options, Ping Test, Save settings to TFTP Server, and Save Switch...
  • Page 122 24-port NWay Ethernet Switch User’s Guide Figure 6-36. Ping Test screen After filling in the fields above, press START to initiate the Ping test. The fields you can set are: ♦ Destination IP Address The IP address of the device to be Pinged.

  • Page 123: Save Settings To Tftp Server

    24-port NWay Ethernet Switch User’s Guide Save Settings to TFTP Server Choose Save Settings to TFTP Server from the Utilities menu (under System Utilities on the main menu) to access the following screen: Figure 6-37. Upload Configuration File screen The fields you can set are: ♦...

  • Page 124: Save Switch History To Tftp Server

    24-port NWay Ethernet Switch User’s Guide Save Switch History to TFTP Server Choose Save Switch History to TFTP Server from the Utilities menu (under System Utilities on the main menu) to access the following screen: Figure 6-38. Upload Switch History File screen The fields you can set are: ♦...

  • Page 125: Snmp Manager Configuration

    24-port NWay Ethernet Switch User’s Guide SNMP Manager Configuration The Switch sends out SNMP traps to network management stations whenever certain exceptional events occur, such as when the Switch is turned on or when a system reset occurs. The Switch allows traps to be routed to up to four different network management hosts.
  • Page 126 24-port NWay Ethernet Switch User’s Guide Figure 6-39. SNMP Manager Configuration screen following SNMP Manager Trap Manager Configuration parameters can be set: ♦ SNMP Community String The community string that will be included on SNMP packets sent to and from the switch.

  • Page 127: Switch Monitoring

    24-port NWay Ethernet Switch User’s Guide Switch Monitoring The switch uses an SNMP agent which monitors different aspects of network traffic. The SNMP agent keeps counters and statistics on the operation of the switch itself, and on each port on the switch. The statistics obtained can be used to monitor the conditions and general efficiency of the Switch.

  • Page 128: Traffic Statistics

    24-port NWay Ethernet Switch User’s Guide The first item on this menu permits you to access four different tables that observe the condition of each individual port. Traffic Statistics To display the Traffic Statistics menu, choose the first item on the Network Monitoring menu. The following menu appears: Figure 6-41.
  • Page 129 24-port NWay Ethernet Switch User’s Guide Figure 6-42. Statistics Overview screen Select the desired increment setting in the Update Interval field: 2 sec, 5 sec, 15 sec, 30 sec, 1 min, or Suspend. The statistic counters displayed are defined as follows: ♦...
  • Page 130 24-port NWay Ethernet Switch User’s Guide Port Traffic Statistics To access the second item on the Traffic Statistics menu, choose Port Traffic Statistics. The following table appears: Figure 6-43. Port Traffic Statistics screen Select the desired setting in the Ports field: 1 to 4, 5 to 8, 9 to 12 , 13 to 16 , 17 to 20 , 21-S1P2, or Slot 2 and the desired increment setting in the Update Interval field: 2 sec, 5 sec, 15 sec, 30 sec, 1 min, or Suspend.
  • Page 131 24-port NWay Ethernet Switch User’s Guide ♦ Bytes Recv. The number of good bytes received. This also includes local and dropped packets. ♦ Bytes Sent The number of good bytes sent from the respective port. ♦ Frames Recv. The number of good frames received. This also includes local and dropped packets.
  • Page 132 24-port NWay Ethernet Switch User’s Guide Figure 6-44. Port Packet Error Statistics tabl Select the desired setting in the Ports field: 1 to 4, 5 to 8, 9 to 12 , 13 to 16 , 17 to 20 , 21-S1P2, or Slot 2 and the desired increment setting in the Polling Interval field: 2 sec, 5 sec, 15 sec, 30 sec, 1 min, or Suspend.
  • Page 133 24-port NWay Ethernet Switch User’s Guide ♦ Jabber The number of frames with length more than 1518 bytes and with CRC error or misalignment (bad framing). ♦ Late Collision The number of collisions that occur at or after the 64 byte (octet) in the frame.
  • Page 134 24-port NWay Ethernet Switch User’s Guide Figure 6-45. Packet Analysis Statistics tabl Select the desired setting in the Ports field: 1 to 4, 5 to 8, 9 to 12 , 13 to 16 , 17 to 20 , 21-S1P2, or Slot 2 and the desired increment setting in the Update Interval field: 2 sec, 5 sec, 15 sec, 30 sec, 1 min, or Suspend.

  • Page 135: Browse Address Table

    24-port NWay Ethernet Switch User’s Guide ♦ TX Octets The number of good bytes sent from the respective port. ♦ RX Octets The number of good bytes received. This also includes local and dropped packets. ♦ Total RX The number of bytes received, good and bad. ♦...

  • Page 136: Browse Igmp Status

    24-port NWay Ethernet Switch User’s Guide Figure 6-46. Browse Address Tabl To browse by MAC address, select MAC address in the Search by field, enter the desired MAC address in the next field, and then press FIND. To browse by port number, select Port in the Search by field, enter the desired port in the next field, and then press FIND.
  • Page 137 24-port NWay Ethernet Switch User’s Guide specific devices based on the IGMP messages sent from the device to the router or vice versa. To display the IP Multicast Information screen, choose Network Monitoring from the main menu and then choose Browse IGMP Status.

  • Page 138: Switch History

    24-port NWay Ethernet Switch User’s Guide ♦ Multicast Group The Multicast IP address of the Multicast group being displayed. ♦ MAC Address The Multicast MAC address of the multicast group being displayed. ♦ Queries(TX) The number of IGMP requests sent by the switch.

  • Page 139: Resetting The Switch

    24-port NWay Ethernet Switch User’s Guide Figure 6-48. Switch History screen The switch history entries are listed sequentially from the last time the Switch was rebooted. Use the following keys to move around the screen above: N – Page down, P – Page up, B –...

  • Page 140: Restart System

    24-port NWay Ethernet Switch User’s Guide Restart System To perform a system reset, choose Restart System from the main menu. Please note there is no confirmation query before the system is rebooted. Figure 6-49. Restart System screen Factory Reset Before performing a factory reset, be absolutely certain that this is what you want to do.

  • Page 141: Logout

    24-port NWay Ethernet Switch User’s Guide these three procedures are performed, your factory reset is complete. Choose Factory Reset from the main menu. The following screen appears: Figure 6-50. Factory Reset Logout To exit the console program, choose Logout from the main menu.

  • Page 142: Web-Based Network Management

    ASED ETWORK ANAGEMENT Introduction The DES-3225G offers an embedded Web-based (HTML) interface allowing users to manage the switch from anywhere on the network through a standard browser such as Netscape Navigator/Communicator or Microsoft Internet Explorer. The Web browser acts as a universal access tool and can communicate directly with the Switch using the HTTP protocol.

  • Page 143: Getting Started

    123 represent the IP address of the switch. In the page that opens, click on the Login to DES-3225G Web-based Management button: This opens the main page in the management module. Web-Based Network Management...

  • Page 144: Configure Switch

    24-port NWay Ethernet Switch User’s Guide The top of the main page has a button labeled Click Here to Load Panel: Clicking on this button causes an interactive view of the Switch’s front panel to be shown in the top portion of the window.

  • Page 145: Ip Settings

    24-port NWay Ethernet Switch User’s Guide IP Settings You can change the IP Address, Subnet Mask, and Default Gateway on the Switch. If you are not using BootP, enter the IP Address, Subnet Mask, and Default Gateway of the Switch. If you enable BOOTP, you do not need to configure any IP parameters because a BOOTP server automatically assigns IP configuration parameters to the switch.

  • Page 146: Port Settings

    24-port NWay Ethernet Switch User’s Guide ♦ MAC Address The Ethernet address for the device. Also known as the physical address ♦ IP Address The host address for the device on the TCP/IP network. ♦ Subnet Mask The address mask that controls subnetting on your TCP/IP network.
  • Page 147 24-port NWay Ethernet Switch User’s Guide 1. Enable or disable the port. If you choose Disabled, devices connected to that port cannot use the Switch, and the Switch purges their addresses from its address table after the MAC address aging time elapses.
  • Page 148 24-port NWay Ethernet Switch User’s Guide 4. Configure the Priority Queues setting for packets passing through this port, using IEEE 802.1 tagging. Select Low, High or Default. If the network is congested, the switch handles packets with a higher priority before those with lower priority. 5.

  • Page 149: Port Mirroring

    24-port NWay Ethernet Switch User’s Guide Port Mirroring The Switch allows you to copy frames transmitted and received on a port and redirect the copies to another port. You can attach a monitoring device to the mirrored port, such as a sniffer or an RMON probe, to view details about the packets passing through the first port.

  • Page 150: Switch Settings

    24-port NWay Ethernet Switch User’s Guide can cause throughput problems. The port you are copying frames from should always support an equal or lower speed than the port to which you are sending the copies. Also, the target port for the mirroring cannot be a member of a trunk group.
  • Page 151 24-port NWay Ethernet Switch User’s Guide ♦ Switch Name A user-assigned name for the Switch. ♦ Location A user-assigned description for the physical location of the Switch. ♦ Contact Name of the person to contact should there be any problems or questions with the system. You may also want to include a phone number or extension.
  • Page 152 24-port NWay Ethernet Switch User’s Guide Advanced The first setting allows you to enable or disable port auto- partitioning by the Port Auto-Partition Capability on All ports function. If you enable auto-partitioning on all ports, when more than 16 collisions occur while a port is transmitting data, port...

  • Page 153: Filtering And Forwarding Table

    24-port NWay Ethernet Switch User’s Guide ♦ Head of Line (HOL) Blocking Prevention This option prevents forwarding a packet to a port where an excess of packets are queued up. Note that when a multicast packet or a packet with an unknown destination address needs to be forwarded to several ports, and if some of them are “blocking,”...
  • Page 154 24-port NWay Ethernet Switch User’s Guide This window allows you to stop or start address learning, use an address look-up mode, and select an age-out time of the MAC address in the selected address table. Click Apply to let your changes take effect. The following fields above can be set: ♦...
  • Page 155 24-port NWay Ethernet Switch User’s Guide Permanent Address Table MAC forwarding allows the Switch to permanently forward outbound traffic to specific destination MAC addresses over a specified port. You can also use this feature to restrict inbound traffic based on source MAC addresses.
  • Page 156 24-port NWay Ethernet Switch User’s Guide To use the MAC forwarding function, check either the Add/Modify to the table option button or the Delete from the table option button, enter the MAC address of the device to which the specified port permanently forwards traffic in the Destination MAC Address field, and enter the port number that permanently forwards traffic from the specified device in the Destination Port Number field.
  • Page 157 24-port NWay Ethernet Switch User’s Guide device, regardless of the device's network activity or current network congestion. Permanent Multicast Filtering Permanent multicast filtering allows the Switch to decide which ports should receive multicast traffic from a specific multicast MAC address. Click the pointer icon on the right side of the table to access the Add/Modify Permanent Multicast Filtering Table Entry window:...
  • Page 158 24-port NWay Ethernet Switch User’s Guide To use the permanent multicast filtering function, check either the Add to the table option button or the Delete from the table option button, enter the MAC address of the device allowed to send traffic in the MAC Address field, and then click Apply.
  • Page 159 24-port NWay Ethernet Switch User’s Guide Multicast Forwarding Table Multicast filtering blocks or forwards traffic over each port for one multicast group. You can configure each port on the Switch to forward traffic for the specified multicast group. Click the pointer icon on the right side of the table to access the Add/Modify Multicast Forwarding Table Entry window: Web-Based Network Management...
  • Page 160 24-port NWay Ethernet Switch User’s Guide To Add/Modify to the table or Delete from the table, check the desired option button, enter the MAC address in the MAC Address field, select Forward or Block for each port, deciding whether that port transmits or blocks traffic for the specified multicast group.

  • Page 161: Spanning Tree

    24-port NWay Ethernet Switch User’s Guide Spanning Tree The Switch supports 801.2d Spanning Tree Protocol, which allows you to create alternative paths (with multiple switches or other types of bridges) in your network. See the Spanning Tree Algorithm section of the “Switch Management”...
  • Page 162 24-port NWay Ethernet Switch User’s Guide ♦ Spanning Tree Protocol Status Displays the current Spanning Tree Protocol setting. ♦ Time Since Last Topology Change Displays the last time changes were made to the network topology. These changes usually occur when backup paths are activated due to primary path failures.
  • Page 163 24-port NWay Ethernet Switch User’s Guide ♦ Switch Priority This read-only object that containing values from 0 to 65535. This value can be set in the Bridge Priority field and is the priority number of the bridge. The value is used in conjunction with the bridge MAC address to set the bridge ID, which in turn is used when determining the root bridge of a multi- bridged network.
  • Page 164 24-port NWay Ethernet Switch User’s Guide STP Parameter & Port Settings To configure Spanning Tree Protocol functions for the Switch or individual ports, enter the desired information in the fields on this screen (see the descriptions below for assistance) and then click Apply. The information on the screen is described as follows: ♦...
  • Page 165 24-port NWay Ethernet Switch User’s Guide Bridge to tell all other switches that it is indeed the Root Bridge. If you set a Hello Time for your Switch, and it is not the Root Bridge, the set Hello Time will be used if and when your Switch becomes the Root Bridge.

  • Page 166: Igmp Filtering

    24-port NWay Ethernet Switch User’s Guide IGMP Filtering IGMP Settings Internet Group Management Protocol (IGMP) snooping allows the Switch to recognize IGMP queries and reports sent between network stations or devices and an IGMP host. When enabled for IGMP snooping, the Switch can open or close a port to a specific device based on IGMP messages passing through the switch.
  • Page 167 24-port NWay Ethernet Switch User’s Guide ♦ IP Multicast Filtering Age-out Timer When this timer elapses, the switch itself will try to become the IGMP host. ♦ IP Multicast Filtering (IGMP Snooping) This setting allows the switch to learn the IGMP spanning tree and intelligently forward packets (as opposed broadcasting...
  • Page 168 24-port NWay Ethernet Switch User’s Guide To Add/Modify to the table or Delete from the table, check the desired option button, enter a value from 1 to 2047 in the VLAN ID field, enter a value between 30 and 999 in the Age-out Timer field, enable or disable the IGMP Status control, and then click Apply.

  • Page 169: Vlan

    24-port NWay Ethernet Switch User’s Guide VLAN VLAN mode allows you to construct a port group as well as to reduce traffic. Broadcast and multicast packets are limited to members of the VLAN. Configure VLAN Mode To use the VLAN mode, select MAC Base or 802.1Q under Restart VLAN Mode--otherwise, leave the setting at Disabled.
  • Page 170 24-port NWay Ethernet Switch User’s Guide Configure MAC-Based VLA Click the pointer icon on the right hand side to access the Add/Delete MAC-Based VLAN window: Web-Based Network Management...
  • Page 171 24-port NWay Ethernet Switch User’s Guide To add or delete a MAC-based VLAN table entry, check the desired option in the first two lines of the window above, enter the Current MAC-based VLAN in the field offered, and click Apply. The MAC-based VLAN description must be the same as that used in the port member group to enable the VLAN function.
  • Page 172 24-port NWay Ethernet Switch User’s Guide Configure 802.1Q VLA Use this window to assign a default VLAN ID for each desired port. Click Apply to let the settings take effect. Web-Based Network Management...
  • Page 173 24-port NWay Ethernet Switch User’s Guide Use this window to enable or disable the ingress filtering check for each desired port. Ingress filtering means that a receiving port will check to see if it is a member of the VLAN ID in the packet before forwarding the packet. Click Apply to let the settings take effect.
  • Page 174 24-port NWay Ethernet Switch User’s Guide Click the pointer icon on the right hand side to access the Configure 802.1Q VLAN Entry window: Web-Based Network Management...

  • Page 175: Trunk

    Egress to statically set a port to belong to a VLAN. Click Apply to let the changes take effect. Trunk The DES-3225G supports up to 3 trunk groups. Trunks are groups of ports that are banded together to form a single, logical, high-bandwidth data pipe.

  • Page 176: Configure Management

    24-port NWay Ethernet Switch User’s Guide ♦ Trunk Ports The continuous number of ports that will be members of the trunk group. ♦ Master The Master port for the trunk group. All configuration settings changes made to the master port will automatically be made to the other ports in the trunk.
  • Page 177 24-port NWay Ethernet Switch User’s Guide Strings and Trap Receiving Stations sections--you may enter up to four entries in each section. A trap receiving station is a device that constantly runs a network management application to receive and store traps. Then click Apply to put the settings into effect. The Community Strings information is described as follows: ♦...

  • Page 178: User Accounts

    24-port NWay Ethernet Switch User’s Guide User Accounts Click the pointer icon on the right hand side to access the main User Accounts window: Web-Based Network Management...

  • Page 179: Console Port Settings

    24-port NWay Ethernet Switch User’s Guide To add or delete a User Account, fill in the appropriate information in the User Name, Old Password, New Password, and Confirm New Password fields. Then select the desired access, Normal User or Administrator in the Access Level control and click Apply.

  • Page 180: Monitor

    24-port NWay Ethernet Switch User’s Guide The default serial port settings are: Baud Rate=9600 Data Bits=8 Flow Control=X on/X off Parity=None Stop Bits=1 The information is described as follows: ♦ Port Settings The options for the current console port setting are Console or SLIP. ♦...

  • Page 181: Switch Overview

    24-port NWay Ethernet Switch User’s Guide Switch Overview The information is described as follows: ♦ Update Interval Choose the desired setting: 2 seconds, 5 seconds, 15 seconds, 30 seconds, 60 seconds or Suspend. ♦ Port The selected port to be monitored. ♦...

  • Page 182: Port Statistics

    24-port NWay Ethernet Switch User’s Guide For example, when a 10 Mbps port is relaying packets at 5 Mbps, the utilization is 50%. Port Statistics The port statistics shown by default are those for the port you last configured. Once in the Port Statistics screens, you can click any port on the switch graphic to show statistics for that port.
  • Page 183 24-port NWay Ethernet Switch User’s Guide ♦ Utilization Current utilization for the port, as a percentage of total available bandwidth. ♦ Last Screen MAC The MAC address of the most recent screen. Traffic in Bytes: ♦ Bytes Sent Counts the number of bytes successfully sent from the port.
  • Page 184 24-port NWay Ethernet Switch User’s Guide Errors The information is described as follows: ♦ Update Interval Choose the desired setting: 2 seconds, 5 seconds, 15 seconds, 30 seconds, 60 seconds or Suspend. ♦ Link (Speed/Duplex/Flow Control) Indicates the current link status. Other errors: ♦...
  • Page 185 24-port NWay Ethernet Switch User’s Guide ♦ Fragments The number of packets less than 64 bytes with either bad framing or an invalid CRC. These are normally the result of collisions. ♦ Jabber The number of frames with length more than 1518 bytes...
  • Page 186 24-port NWay Ethernet Switch User’s Guide Packet Analysis The information is described as follows: ♦ Update Interval Choose the desired setting: 2 seconds, 5 seconds, 15 seconds, 30 seconds, 60 seconds or Suspend. ♦ 64 The total number of packets (including bad packets) r eceived that were 64 octets in length (excluding framing bits but including FCS octets).
  • Page 187 24-port NWay Ethernet Switch User’s Guide 255 octets in length inclusive (excluding framing bits but including FCS octets). ♦ 256-511 The total number of packets (including bad packets) received that were between 256 and 511 octets in length inclusive (excluding framing bits but including FCS octets).
  • Page 188 24-port NWay Ethernet Switch User’s Guide address. Note that this does not include dropped unicast packets ♦ Multicast Rx/Tx The total number of good packets that were received by and directed to a multicast address. Note that this number does not include packets directed to the broadcast address ♦...

  • Page 189: Browse Address Table

    24-port NWay Ethernet Switch User’s Guide Browse Address Table The Switch allows you to display a table containing MAC addresses, ports, and respective learned statuses. Clicking the Next Page hyperlink at the bottom of the screen will allow you to display the complete MAC Address Table. Web-Based Network Management...

  • Page 190: Browse Igmp Status

    24-port NWay Ethernet Switch User’s Guide Browse IGMP Status This window allows you to display Multicast Group, MAC Address, Queries (TX), Queries (RX), Reports, and Ports for IGMP Snooping in a table format. Web-Based Network Management...

  • Page 191: Switch History

    24-port NWay Ethernet Switch User’s Guide Switch History The Switch can send event information to its own logs, to designated SNMP trap receiving stations, and to the PC connected to the console manager. Clicking the Next Page hyperlink at the bottom of the screen will allow you to display the complete Switch Traps Log.

  • Page 192: Reset And Update

    24-port NWay Ethernet Switch User’s Guide Reset and Update The fourth category includes: Reboot Switch, Reset to Factory Default, Update Firmware, Change Configuration File, Upload Configure File, and Upload Log File. Reboot Switch To perform a reboot of the Switch, which resets the system, click the Reboot Now button.

  • Page 193: Reset To Factory Default

    24-port NWay Ethernet Switch User’s Guide Reset to Factory Default Doing a remote reset is equivalent to turning the Switch off and on again. All parameters are returned to the values stored in EEPROM. Click the Reset to Factory Default to reset the Switch.

  • Page 194: Update Firmware

    24-port NWay Ethernet Switch User’s Guide Update Firmware To update firmware, fill in the requested information above and then click the Apply button. The information is described as follows: ♦ Software Update Mode is Set to either Network or SLIP. Determines whether the new firmware code should be obtained through the Ethernet network or through the console port.

  • Page 195: Change Configuration File

    24-port NWay Ethernet Switch User’s Guide Change Configuration File To change a configuration file, fill the fields in above and then click Apply. The information is described as follows: ♦ Software Update Mode is Set to either Network or SLIP. Determines whether the configuration file should be obtained through the Ethernet network or through the console port.

  • Page 196: Save Settings To Tftp Server

    24-port NWay Ethernet Switch User’s Guide Save Settings to TFTP Server To save settings to a file on your TFTP server, fill the fields in above and then click Upload now. The information is described as follows: ♦ TFTP Server Address is The IP address of the TFTP server where the setting file will be saved.

  • Page 197: Upload Log File

    24-port NWay Ethernet Switch User’s Guide Upload Log File To save a log file to your TFTP server, fill the fields in above and then click Upload now. The information is described as follows: ♦ TFTP Server Address is The IP address of the TFTP server where the log file will be saved.

  • Page 198: Save Changes

    24-port NWay Ethernet Switch User’s Guide Save Changes To save all the changes made in the current session to the Switch’s flash memory, click the Save Changes Now button. Help Click this button to access the online help files for the Switch.

  • Page 199: Technical Specifications

    24-port NWay Ethernet Switch User’s Guide ECHNICAL PECIFICATIONS General Standards: IEEE 802.3 10BASE-T Ethernet IEEE 802.3u 100BASE-TX Fast Ethernet IEEE 802.3z 1000BASE-SX Gigabit Ethernet IEEE 802.1 P/Q VLAN IEEE 802.3x Full-duplex Flow Control Protocols: CSMA/CD Data Transfer Half-duplex Full-duplex Rates: 10 Mbps 20Mbps Ethernet...

  • Page 200: Physical And Environmental

    24-port NWay Ethernet Switch User’s Guide General Network Cables: 10BASE-T: 2-pair UTP Cat. 3,4,5 (100 m) EIA/TIA- 568 100-ohm STP (100 m) 100BASE-TX: 2-pair UTP Cat. 5 (100 m) EIA/TIA-568 100-ohm STP (100 m) 100BASE-TX: 2-pair UTP Cat. 5 (100 m) Fiber Optic: IEC 793-2:1992 Type A1a - 50/125um multimod...
  • Page 201 24-port NWay Ethernet Switch User’s Guide Physical and Environmental mount width Weight: 5 kg EMI: FCC Class A, CE Class A, VCCI Class A, BSMI Class A, C-Tick Class A Safety: UL, CSA, CE Mark, TUV/GS Performance Transmission Method: Store-and-forward RAM Buffer: 12 MB per device Filtering Address...

  • Page 202: Rj-45 Pin Specification

    24-port NWay Ethernet Switch User’s Guide RJ-45 P PECIFICATION When connecting the DES-3225G Switch to another switch, a bridge or a hub, a modified crossover cable is necessary. Please review these products for matching cable pin assignment. The following diagram and table show the standard RJ-...
  • Page 203 24-port NWay Ethernet Switch User’s Guide RJ-45 Connector pin assignment Contact Media Direct Interface Signal Tx + (transmit) Tx - (transmit) Rx + (receive) Not used Not used Rx - (receive) Not used Not used Table B-1. The standard Category 3 cable, RJ-45 pin assignment The following shows straight cable and crossover cable connection:...

  • Page 204: Sample Configuration File

    24-port NWay Ethernet Switch User’s Guide AMPLE ONFIGURATION This Appendix provides a sample configuration file that can be used with the Update Firmware and Configuration Files screen in the console program. The configuration file is a simple text file that you create. It has two functions: to point to the location of a file on a TFTP server, and to set the IP address, subnet mask and default gateway for the switch.
  • Page 205 24-port NWay Ethernet Switch User’s Guide Code_types are , or . This should PROM RUNTIME CONFIG always be the first setting. • PROM – PROM update file. • RUNTIME – Switching software update file. • CONFIG – Image file of switch settings created by the settings backup procedure.

  • Page 206: Notes About The Configuration File

    24-port NWay Ethernet Switch User’s Guide remain in the file so that the syntax will not be forgotten. Notes about the Configuration File: This configuration file can only contain 4 settings: Code_type, Ip_addr, Subnet_mask Default_gateway Each command can only appear once in the configuration file.

  • Page 207: Runtime Switching Software Default Settings

    24-port NWay Ethernet Switch User’s Guide UNTIME WITCHING OFTWARE EFAULT ETTINGS                                      !"!    #$   %%%   & %%%    %%% ' $  ()...
  • Page 208 24-port NWay Ethernet Switch User’s Guide $     '  3  ! ) '    ! ) '     4 ./ ) '     4 "!56 $ *$ ) . 7+ 89: $ *$    4         " ) ,  &  ( .

  • Page 209: Index

    24-port NWay Ethernet Switch User’s Guide NDEX AC power cord......7 Access Rights % Utilization ......113 read only......109 %Util........112 read/write ......109 Accessory pack......7 Add/Modify User Accounts..58 1000BASE-SX Gigabit Module Address Table Lookup Mode .. 83 ........
  • Page 210 24-port NWay Ethernet Switch User’s Guide Bridge Max. Age ..... 34 Configure Filtering and Bridge MIB (RFC 1268) ... 6 Forwarding Table ....82 Bridge Priorit ..... 33, 34, 37 Configure IGMP Filtering..88 broadcast domains ....39 Configure IP Address....61 Broadcast Rx (Broadcast Frames Configure MAC Address Received)......
  • Page 211 ......26 entries ........83 General User......54 Displaying Port Statistics..118 Giga ........19 D-Link proprietary MI ... 6 Gigabit Ethernet ....2, 13 Dropped Frames ....115 Group name......102 Dynamic filtering ....31 Dynamic Filtering, definition of ........
  • Page 212 24-port NWay Ethernet Switch User’s Guide Illustration of STA ....35 MAC-Based VLAN-MAC Ingress Filtering ...... 97 Assignment......95 Ingress port ......45 MAC-based VLANs..39, 40, 93 Internet Group Management Setting up ......41 Main Menu......54 Protocol (IGMP) ....88 IP address......
  • Page 213 24-port NWay Ethernet Switch User’s Guide NV-RAM ......55, 122 port-based VLANs....39 NWay........4 Port-based VLANs....41 ports ......... 4 Ports ........120 Operating Temperature..181 Power ........18 Out-of-band management and Power Consumption....181 console settings ....
  • Page 214 24-port NWay Ethernet Switch User’s Guide Spanning Tree Protocol ..31 Speed......113, 114 Save Changes ......52 Speed/Duplex ......68 Save Settings to TFTP Serve 105 STA Operation Levels .... 32 Save Switch History to TFTP Static Filtering, definition of ... 82 Server........
  • Page 215 24-port NWay Ethernet Switch User’s Guide Third-party vendors’ SNMP Update Firmware and software........ 29 Configuration Files .... 102 Total Bytes Recv....113 Uplink ......13, 22 Total Bytes Rx (Total Bytes Use Configuration File..103 Received)......117 User Accounts Management ... 58 Total errors......
  • Page 216 Via Nino Bonnet No. 6, 20154 Milano, Italy TEL: 39-2-2900-0676 FAX: 39-2-2900-1723 E-Mail: dlink@tin.it JAPAN D-LINK JAPAN 10F, 8-8-15 Nishi-Gotanda, Shinagawa-ku, Tokyo 141 Japan TEL: 81-3-5434-9678 FAX: 81-3-5434-9868 WEB: www.d-link.co.jp SINGAPORE D-LINK INTERNATIONAL 1 International Business Park, #03-12 The Synergy, Singapore 609917 TEL: 65-774-6233 FAX: 65-774-6322 WEB: www.dlink.intl.com E-MAIL: info@dlink.com.sg...
  • Page 217 U.K. D-LINK EUROPE D-Link House, 6 Garland Road, Stanmore, London HA7 1DP U.K. TEL: 44-181-235-5555 FAX: 44-181-235-5500 WEB: www.dlink.co.uk E-MAIL: info@dlink.co.uk U.S.A. D-LINK U.S.A. 53 Discovery Drive, Irvine, CA 92618 USA TEL: 1-949-788-0805 FAX: 1-949-753-7033 WEB: www.dlink.com E-MAIL: tech@dlink.com...

  • Page 218: Registration Card

    8. What category best describes your company? Aerospace Engineering Education Finance Hospital Legal Insurance/Real Estate Manufacturing Retail/Chainstore/Wholesale Government Transportation/Utilities/Communication System house/company Other________________________________ 9. Would you recommend your D-Link product to a friend? Don't know yet 10.Your comments on this product? __________________________________________________________________________________________ __________________________________________________________________________________________...

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