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CheetahSwitch Workgroup-4508 Management Guide ...
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Management Guide CheetaSwitch W orkgroup-4508 Intelligent Gigabit Ethernet Switch with 8 1000BASE-SX (SC) Ports ...
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Copyright © 2000 by Accton T echnology Corporation. All rights reserved. No part of this document may be copied or reproduced in any form or by any means without the prior written consent of Accton T echnology Corporation. Accton makes no warranties with respect to this documentation and disclaims any implied warranties of merchantability , qualit ...
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i Content s Chapter 1: Managing the Switch 1-1 Configuration Options 1-1 Making Connections for System Configuration 1-2 Onsite Connection 1-2 Modem Connection 1-2 T elnet Connection 1-3 In-Band Network Connection 1-3 Chapter 2: Using the System Configuration Program 2-1 Main Menu 2-2 System Information Menu 2-4 Displaying System Information 2-4 Di ...
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ii Configuring T raffic Classes 2-27 Port Priority Configuration 2-27 802.1p Port T raffic Class Information 2-28 Configuring V irtual LANs 2-29 802.1Q VLAN Base Information 2-29 802.1Q VLAN Current T able Information 2-30 802.1Q VLAN S tatic T able Configuration 2-31 802.1Q VLAN Port Configuration 2-32 Monitoring the Switch 2-33 Displaying Port S ...
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iii Priority 3-18 Port Priority Configuration 3-18 Port T raffic Class Information 3-19 Configuring VLANs 3-20 VLAN Basic Information 3-20 VLAN Current T able 3-21 VLAN S tatic List 3-22 VLAN S tatic T able 3-22 VLAN S tatic Membership by Port 3-23 VLAN Port Configuration 3-24 IGMP Multicast Filtering 3-25 Configuring IGMP 3-25 IP Multicast Registr ...
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iv ...
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1 1-1 Chapter 1: Managing the Switch Configuration Options The CheetahSwitch Workgroup-4508 provides a menu-driven system configuration program that can be accessed through a direct console connection or modem connection to the serial port on the switch’s rear p anel (out-of-band), or by a T elnet connection over the network (in-band). The switch ...
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1-2 CheetahSwitch Workgroup-4508 Making Connections for System Configuration The switch includes a menu-driven configuration program. The ASCII interface to this program can be accessed by making a direct connection to the serial port on the rear panel, or by a T elnet connection to the switch over the network. This section describes how to access ...
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Management Guide 1-3 T elnet Connection Prior to accessing the switch via an in-band T elnet connection, you must first configure it with a valid IP address, subnet mask, and default gateway using an out-of-band connection or BOOTP protocol. After configuring the switch’ s IP parameters, you can access the on-board configuration program from anyw ...
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1-4 CheetahSwitch Workgroup-4508 ...
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1 2-1 Chapter 2: Using the System Configuration Program Once a direct connection to the serial port or a T elnet connection is established, the login screen for the on-board configuration program appears as shown below . AAAAAAA AAAAAAAAAA AAAAA AAAA AAAAA AAAA AAAAA AAAA CCCCCCC CCCCCC TTTTTTTTTT OOOOOO NN NN AAAAA AAAA CC CC CC CC TT OO OO NNN NN ...
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2-2 CheetahSwitch Workgroup-4508 Main Menu With the system configuration program you can define system parameters, manage the switch and all its ports, or monitor network conditions. The figure below of the Main Menu and the following table briefly describe the selections available from this program. Note: Options for the currently selected item ar ...
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Management Guide 2-3 Parameter Description Port Information Displays operational status, including link state, flow control method, speed and duplex mode. Spanning Tree Configuration Enables Spanning T ree Algorithm; also sets parameters for hello time, maximum message age, switch priority , and forward delay; as well as port priority , path cost a ...
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2-4 CheetahSwitch Workgroup-4508 System Information Men u Use the System Information Menu to display a basic description of the switch, including contact information, and hardware/firmware versions. CheetahSwitch Workgroup - 4508 System Information Menu System Information ... Switch Information ... <OK> Use <TAB> or arrow keys to move. ...
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Management Guide 2-5 Displaying V ersion Information Use the Switch Information screen to display hardware/firmware version numbers, as well as the power status. CheetahSwitch Workgroup - 4508 Switch Information Hardware Version : V1.0 POST ROM Version : V01.00.00 Firmware Version : V01.00.01 Serial Number : Port Number : 8 Internal Power Status : ...
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2-6 CheetahSwitch Workgroup-4508 CheetahSwitch Workgroup - 4508 Management Setup Network Configuration ... Serial Port Configuration ... SNMP Configuration ... Console Login Configuration ... TFTP Download ... <OK> Use <TAB> or arrow keys to move. <Enter> to select. Changing the Network Configuration Use the Network Configuration ...
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Management Guide 2-7 IP Configuration Use the IP Configuration screen to set the bootup option, or configure the switch's IP p arameters. The screen shown below is described in the following table. CheetahSwitch Workgroup - 4508 Network Configuration: IP Configuration Interface Type : Ethernet IP Address : 10.1.113.29 Subnet Mask : 255.255.0.0 ...
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2-8 CheetahSwitch Workgroup-4508 IP Connectivity T est (Ping) Use the IP Connectivity T est to see if another site on the Internet can be reached. The screen shown below is described in the following table. CheetahSwitch Workgroup - 4508 Network Configuration: IP Connectivity Te st (Ping) IP Address : 200.123.211.109 Test Times : 1000 Interval : 1 ...
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Management Guide 2-9 HTTP Configuration Use the HTTP Configuration screen to enable/disable the on-board Web agent, and to specify the TCP port that will provide HTTP service. The screen shown below is described in the following table. CheetahSwitch Workgroup - 4508 Network Configuration: HTTP Configuration HTTP Server : ENABLED HTTP Port Number : ...
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2-10 CheetahSwitch Workgroup-4508 Configuring the Serial Port Y ou can access the on-board configuration program by attaching a VT100 compatible device to the switch's serial port. For more information on connecting to this port, refer to the section on Making the Connections Required for System Configuration on page 9. The communication p ara ...
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Management Guide 2-11 Assigning SNMP Parameters Use the SNMP Configuration screen to display and modify p arameters for the Simple Network Management Protocol (SNMP). The switch includes an on-board SNMP agent which monitors the st atus of its hardware, as well as the traffic passing through its ports. A computer att ached to the network, called a ...
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2-12 CheetahSwitch Workgroup-4508 Configuring Community Names The following figure and table describe how to configure the community strings authorized for trap management access. All community strings used for IP T rap Managers must be listed in this table. Up to 5 community names may be entered. CheetahSwitch Workgroup - 4508 SNMP Configuration: ...
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Management Guide 2-13 Parameter Description IP Address IP address of the trap manager . Community Name A community specified in the SNMP Communities table. Status Sets administrative status of entry to enabled or disabled. Console Login Configuration Use the Management Setup: Console Login Configuration to restrict management access based on specif ...
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2-14 CheetahSwitch Workgroup-4508 Downloading System Software Using TFTP Protocol to Download Over the Network Use the TFTP Download menu to load sof tware updates into the switch. The download file should be an ES4508 binary file from Accton; otherwise the agent will not accept it. The success of the download operation depends on the accessibility ...
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Management Guide 2-15 Configuring the Switch The Device Control menu is used to set the communication parameters for individual ports, and to fine-tune the performance of your switch by adjusting the forwarding mode, flow control, and specific S panning T ree parameters. Configuration menus are also provided for advanced functions, such as Virtual ...
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2-16 CheetahSwitch Workgroup-4508 Configuring Port Parameters Use the Port Configuration menus to configure any port on the switch. CheetahSwitch Workgroup - 4508 Port Configuration: Por t1-8 Port Type Admin Flow Speed and Control Duplex ------------------------------------------------------ 1. 1000SX ENABLED ON 1000-FULL 2. 1000SX ENABLED OFF 1000 ...
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Management Guide 2-17 Viewing the Current Port Configuration The Port Information screen displays the port type, status, link state, and flow control in use. T o change any of the port settings, use the configuration menu. CheetahSwitch Workgroup - 4508 Port Information: Por t1-8 Port Type Operational Link FlowControl Spee d and InUse Duplex InUse ...
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2-18 CheetahSwitch Workgroup-4508 Configuring Bridge ST A The following figure and table describe Bridge ST A configuration. CheetahSwitch Workgroup - 4508 Spanning Tree Configuration: Bridge STA Configuration Spanning Tree Protocol : ENABLED Hello Time : 2 Max Age : 6 Priority : 32768 Forward Delay : 4 <APPLY> <OK> <CANCEL> Use & ...
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Management Guide 2-19 Configuring ST A for Port s The following figure and table describe ST A configuration for ports. CheetahSwitch Workgroup - 4508 Spanning Tree Port Configuration : Port 1 - 8 Port Type Priority Cost Fast STA Mode ----------------------------------------------------- 1 1000SX 128 4 DISABLED 2 1000SX 128 4 DISABLED 3 1000SX 128 ...
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2-20 CheetahSwitch Workgroup-4508 Viewing the Current S panning T ree Configuration The S panning T ree Information screen displays a summary of the ST A information for the overall bridge or for a specific port. T o make any changes to the parameters for the S panning T ree, use the S panning T ree Configuration menu. Also note that this screen ca ...
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Management Guide 2-21 Parameter Description Hold Time The minimum interval between the transmission of consecutive Configuration BPDUs. Designated Root The priority and MAC address of the device in the spanning tree that this switch has accepted as the root device. Root Cost The path cost from the root port on this switch to the root device. Root P ...
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2-22 CheetahSwitch Workgroup-4508 Parameter Description T ype Shows port type as 1000SX (1000BASE-SX). Status Displays the current state of this port within the spanning tree: Disabled Port has been disabled by the user or has failed diagnostics. Blocked Port receives ST A configuration messages, but does not forward packets. Listening Port will le ...
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Management Guide 2-23 Using a Mirror Port for Analysis Y ou can mirror traffic from any source port to a target port for real-time analysis. Y ou can then attach a logic analyzer or RMON probe to the target port and study the traffic crossing the source port in a completely unobtrusive manner . When mirroring port traffic, note that the t arget por ...
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2-24 CheetahSwitch Workgroup-4508 Configuring IGMP This protocol allows a host to inform its local switch/router that it wants to receive transmissions addressed to a specific multicast group. Y ou can use the IGMP Configuration screen to configure multicast filtering shown below: CheetahSwitch Workgroup - 4508 IGMP Configuration IGMP Status : ENAB ...
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Management Guide 2-25 Broadcast Storm Control Use the Broadcast S torm Control menu to enable/disable broadcast suppression on a per-port basis. Y ou can also set the packet-per-second threshold above which broadcast packets will be discarded. The parameters are shown in the following figure and table. CheetahSwitch Workgroup - 4508 Broadcast Storm ...
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2-26 CheetahSwitch Workgroup-4508 Configuring Bridge MIB Extensions The Bridge MIB includes extensions for managed devices that support T raffic Classes, Multicast Filtering and Virtual LANs. T o configure these extensions, use the Extended Bridge Configuration screen as shown below: Cheetahswitch Workgroup - 4508 Extended Bridge Configuration Brid ...
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Management Guide 2-27 Configuring T raffic Classes IEEE 802.1p defines up to 8 separate traffic classes. This switch supports Quality of Service (QoS) by using two priority queues, with weighted fair queuing for each port. Y ou can use the 802.1P Configuration menu to configure the default priority for each port, or to display the mapping for the t ...
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2-28 CheetahSwitch Workgroup-4508 802.1p Port T raffic Class Information This switch provides two priority levels with weighted fair queuing for port egress. This means that any frames with a default or user priority from 0~3 are sent to the low priority queue “0” while those from 4~7 are sent to the high priority queue “1” as shown in the ...
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Management Guide 2-29 Configuring Virtual LANs Y ou can use the VLAN configuration menu to assign any port on the switch to any of up to 16 LAN groups. In conventional networks with routers, broadcast traffic is split up into sep arate domains. Switches do not inherently support broadcast domains. This can lead to broadcast storms in large networks ...
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2-30 CheetahSwitch Workgroup-4508 802.1Q VLAN Current T able Information This screen shows the current port members of each VLAN and whether or not the port supports VLAN t agging. Ports assigned to a large VLAN group that crosses several switches should use VLAN tagging. However , if you just want to create a small port-based VLAN for one or two s ...
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Management Guide 2-31 802.1Q VLAN St atic T able Configuration Use this screen to create a new VLAN or modify the settings for an existing VLAN. Note that all ports can only belong to one untagged VLAN. This is set to VLAN 1 by default, but can be changed via the 802.1Q VLAN Port Configuration screen. CheetahSwitch Workgroup - 4508 1Q VLAN Static T ...
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2-32 CheetahSwitch Workgroup-4508 For example, the following screen displays settings for VLAN 2, which includes tagged ports 1-6, and forbidden port 8. CheetahSwitch Workgroup - 4508 1Q VLAN Static Table Configuration VID VLAN Name Row Status ------------------------------ 2 RD Active Egress Ports Forbidden Egress Ports 11111100 00000001 V I D:2 [ ...
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Management Guide 2-33 Monitoring the Switc h The Network Monitor Menu provides access to port statistics, RMON statistics, IP multicast addresses, and the st atic (unicast) address table. Each of the screens provided by these menus is described in the following sections. CheetahSwitch Workgroup - 4508 Network Monitor Menu Port Statistics ... RMON S ...
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2-34 CheetahSwitch Workgroup-4508 Displaying Port Statistics Port S tatistics display key statistics from the Ethernet-like MIB for each port. Error statistics on the traffic p assing through each port are displayed. This information can be used to identify potential problems with the switch (such as a faulty port or unusually heavy loading). The v ...
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Management Guide 2-35 Parameter Description Carrier Sense Errors 1 The number of times that the carrier sense condition was lost or never asserted when attempting to transmit a frame. Frames T oo Long The number of frames received that exceed the maximum permitted frame size. Internal Mac Receive Errors 1 The number of frames for which reception fa ...
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2-36 CheetahSwitch Workgroup-4508 Parameter Description Undersize Frames The total number of frames received that were less than 64 octets long (excluding framing bits, but including FCS octets) and were otherwise well formed. Oversize Frames The total number of frames received that were longer than 1518 octets (excluding framing bits, but includin ...
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Management Guide 2-37 Using the Address T able The Address T able contains the MAC addresses and VLAN identifiier associated with each port (that is, the source port associated with the address and VLAN). The address table provides search options for a specific port, address or VLAN identifier . Y ou can also clear the entire address table, or info ...
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2-38 CheetahSwitch Workgroup-4508 Displaying the IP Multicast Registration T able Use the IP Multicast Registration T able to display all the multicast groups active on this switch, including multicast IP addresses and the corresponding VLAN ID. CheetahSwitch Workgroup - 4508 IP Multicast Registration Table VID Multicast IP Dynamic Port Lists Learn ...
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Management Guide 2-39 Configuring St atic Unicast Addresses Use the S tatic Unicast Address T able Configuration screen to manually configure host MAC addresses in the unicast table. Y ou can use this screen to associate a MAC address with a specific VLAN ID and switch port as shown below . CheetahSwitch Workgroup - 4508 Static Unicast Addreeess Ta ...
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2-40 CheetahSwitch Workgroup-4508 Resetting the System Use the System Restart Menu under the Main Menu to reset the management agent. The reset screen also includes an option to return all configuration parameters to their factory defaults. CheetahSwitch Workgroup - 4508 System Restart Menu Restart Option : POST : NO Reload Factory Defaults : NO Ke ...
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1 3-1 Chapter 3: Using the Web Agent As well as the menu-driven system configuration program, the CheetahSwitch Workgroup-4508 provides an embedded HTTP Web agent. This agent can be accessed by any computer on the network using a standard Web browser (Internet Explorer 4.0 or above, or Netscape Navigator 4.0 or above). Using the Web browser managem ...
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3-2 CheetahSwitch Workgroup-4508 Home Page When your Web browser connects with the switch’ s Web agent, the home p age is displayed as shown below . The home page displays the Main Menu on the left- hand side of the screen and the System Information on the right-hand side. The Main Menu links are used to navigate to other menus and display config ...
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Management Guide 3-3 P anel Display The Web Agent displays an image of the switch’s port s, showing port link and activity . Clicking on the image of a port displays statistics and configuration information for the port. Clicking on the image of the serial port (labelled “Mgmt”) displays the Console Configuration screen. Console Configuration ...
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3-4 CheetahSwitch Workgroup-4508 Main Menu Using the on-board Web agent, you can define system parameters, manage and control the switch and all its ports, or monitor network conditions. The figure to the right of the Main Menu and the following table briefly describe the selections available from this program. Item Description System Provides basi ...
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Management Guide 3-5 System Information Use the System Information screen to display descriptive information about the switch, or for quick system identification as shown in the following figure and table. Parameter Description System Name 1 Name assigned to the switch system. IP Address 2 IP address of the SNMP agent. The management agent supports ...
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3-6 CheetahSwitch Workgroup-4508 Switch Inf ormation Use the Switch Information screen to display hardware/firmware version numbers for the main board and SNMP agent, as well as the power st atus. Main Board Parameter Description Hardware Version Hardware version of the main board. POST V ersion System POST version. Firmware Version Version number ...
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Management Guide 3-7 Network Configuration Use the IP Configuration screen to set the bootup option, configure the Ethernet IP addresses for the agent module, or set the number or concurrent T elnet sessions allowed. The Access Host screen can be used to limit access to the Web management agent to specified subnet groups. IP Configuration Use the I ...
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3-8 CheetahSwitch Workgroup-4508 Access Host Use the Access Host screen to specify subnet groups from which the switch’s management agent can be accessed. The screen shown below is described in the following table. Parameter Description Access IP Net An IP address of a subnet authorized for management access. Access IP Mask A subnet mask that ide ...
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Management Guide 3-9 SNMP Community The following figure and table describe how to configure the community strings authorized for trap management access. All community strings used for IP T rap Managers must be listed in this table. Up to 5 community names may be entered. Parameter Description Community String A community entry authorized for trap ...
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3-10 CheetahSwitch Workgroup-4508 Security Configuration Use the Security Configuration screen to restrict management access based on Administrator user name and password. Only the Administrator has write access for parameters governing the SNMP agent. Y ou should therefore assign a password to the Administrator as soon as possible, and store it in ...
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Management Guide 3-11 Parameter Description File Name The ES4508 binary file to download. Use the Browse button to locate the firmware file. Start Web Upload Issues request to TFTP server to download the specified file. TFTP Download Management Use the TFTP Download Management menu to load software updates into the switch. The download file should ...
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3-12 CheetahSwitch Workgroup-4508 Address T able Configuration The Address T able contains the MAC addresses associated with each port (that is, the source port associated with the address). The address table provides search options for a specific port or address. Y ou can also clear the entire address table, or information associated with a specif ...
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Management Guide 3-13 ST A (Spanning T ree Algor ithm) The S panning T ree Algorithm can be used to detect and disable network loops, and to provide backup links between switches, bridges or routers. This allows the switch to interact with other bridging devices (that is, ST A compliant switch, bridge or router) in your network to ensure that only ...
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3-14 CheetahSwitch Workgroup-4508 Ports The parameters shown in the following figure and table are for port ST A Information. Parameter Description Port Status Displays the current state of this port within the spanning tree: Disabled Port has been disabled by the user or has failed diagnostics. Blocked Port receives ST A configuration messages, bu ...
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Management Guide 3-15 Sp anning T ree Configuration The following figures and tables describe Bridge ST A configuration. Switch Parameter Default Description Usage Enabled Enable this parameter to participate in an ST A compliant network. Priority 32,768 Device priority is used in selecting the root device, root port, and designated port. The devic ...
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3-16 CheetahSwitch Workgroup-4508 Parameter Default Description Forward Delay 15 The maximum time (in seconds) the root device will wait before changing states (i.e., listening to learning to forwarding). This delay is required because every device must receive information about topology changes before it starts to forward frames. In addition, each ...
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Management Guide 3-17 Parameter Default Description Fast ST A Mode Disabled This enables/disables the Fast ST A Mode for the port. In this mode, ports skip the Blocked, Listening and Learning states and proceed straight to Forwarding. The Fast ST A Mode enables end-node workstations and servers to overcome time-out problems when the Spanning T ree ...
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3-18 CheetahSwitch Workgroup-4508 Bridge Settings Parameter Description Traf fic Class Multiple traffic classes are supported by this switch as indicated under Bridge Capabilities. However , the switch supports just two priority queues and only the default port priority can be configured. The switch does not support the configuration of traffic cla ...
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Management Guide 3-19 Parameter Description Port Numeric identifier for switch port. Default Ingress User Priority Default priority can be set to any value from 0~7, where 0~3 specifies the low priority queue and 4~7 specifies the high priority queue. Number of Egress T raffic Classes Indicates that this switch supports two priority output queues. ...
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3-20 CheetahSwitch Workgroup-4508 Configuring VLANs Use the VLAN menu to create LAN groups and assign switch ports to any of up to 16 groups. In conventional networks with routers, broadcast traf fic is split up into separate domains. Switches do not inherently support broadcast domains. This can lead to broadcast storms in large networks that hand ...
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Management Guide 3-21 VLAN Current T able This screen shows the current port members of each VLAN and whether or not the port supports VLAN tagging. Port s assigned to a large VLAN group that crosses several switches should use VLAN tagging. However , if you just want to create a small port-based VLAN for one or two switches, you can assign ports t ...
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3-22 CheetahSwitch Workgroup-4508 VLAN St atic List Use this screen to create or remove VLAN groups. Parameter Description Current Lists all the current VLAN groups created for this system. Up to 16 VLAN groups can be defined. T o allow this switch to participate in external VLAN groups, you must use the VLAN ID for the concerned external groups. N ...
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Management Guide 3-23 Use the screens shown below to assign ports to the specified VLAN group as an IEEE 802.1Q tagged port. Assign ports as tagged if they are connected to 802.1Q VLAN compliant devices. If the port is connected to VLAN-unaware devices, frames will passed to the untagged VLAN group this port has been assigned to under VLAN Port Con ...
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3-24 CheetahSwitch Workgroup-4508 VLAN Port Configuration Use this screen to configure port-specific settings for IEEE 802.1Q VLAN features. Parameter Description PVID The VLAN ID assigned to untagged frames received on this port. Use the PVID to assign ports to the same untagged VLAN. Acceptable Frame T ype This switch accepts “All” frame type ...
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Management Guide 3-25 IGMP Multicast Filtering Multicasting is used to support real-time applications such as video conferencing or streaming audio. A multicast server does not have to establish a separate connection with each client. It merely broadcasts its service to the network, and any hosts which want to receive the multicast register with th ...
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3-26 CheetahSwitch Workgroup-4508 IP Multicast Registration T able Use the IP Multicast Registration T able to display all the multicast groups active on this switch, including multicast IP addresses and the corresponding VLAN ID. Parameter Description VLAN ID VLAN ID assigned to this multicast group. Multicast IP Address IP address for specific mu ...
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Management Guide 3-27 Parameter Description Admin Status Shows if the port is enabled or not. Link Status Indicates if the port has a valid connection to an external device. Speed Status Indicates that the port is connected at 1000 Mbps.. Duplex Status Indicates that the port is connected at full duplex. Flow Control Status Shows if flow control is ...
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3-28 CheetahSwitch Workgroup-4508 P or t Mirroring Configuration Y ou can mirror the traffic from a target port to an analysis port for real-time analysis. Y ou can then attach a logic analyzer or RMON probe to the analysis port and study the traffic crossing target port in a completely unobtrusive manner . When mirroring a port, note that the anal ...
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Management Guide 3-29 Parameter Description Alignment Errors For 10 Mbps ports, this counter records alignment errors (mis- synchronized data packets). For 100 Mbps ports, this counter records the sum of alignment errors and code errors (frames received with rxerror signal). FCS Errors The number of frames received that are an integral number of oc ...
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3-30 CheetahSwitch Workgroup-4508 RMON St atistics RMON S tatistics display key statistics for each port or media module from RMON group 1. (RMON groups 2, 3 and 9 can only be accessed using SNMP management software such as AccView .) The following screen displays overall statistics on traffic p assing through each port. RMON statistics provide acc ...
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Management Guide 3-31 Parameter Description Jabbers The total number of frames received that were longer than 1518 octets (excluding framing bits, but including FCS octets), and had either an FCS or alignment error . Collisions The best estimate of the total number of collisions on this Ethernet segment. 64 Byte Frames The total number of frames (i ...
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3-32 CheetahSwitch Workgroup-4508 Broadcast Storm Contr ol Use the Broadcast S torm Control page to enable/disable broadcast suppression on a per-port basis. Y ou can also set the broadcast-rate threshold above which broadcast packet s will be discarded. The p arameters are shown in the following figure and table. Parameter Description Filtering St ...
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1 4-1 Chapter 4: Adv anced T opics Spanning T ree Algorithm The S panning T ree Algorithm (that is, the ST A configuration algorithm as outlined in IEEE 802.1D) can be used to detect and disable network loops, and to provide link backup. This allows the switch to interact with other bridging devices (including ST A compliant switches, bridges or ro ...
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4-2 CheetahSwitch Workgroup-4508 Virtual LANs Switches do not inherently support broadcast domains, which can lead to broadcast storms in large networks that handle a lot of IPX or NetBeui traffic. In conventional networks with routers, broadcast traffic is split up into sep arate domains to confine broadcast traffic to the originating group and pr ...
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Management Guide 4-3 VLAN Classification When the switch receives a frame, it classifies the frame in one of two ways: • If the frame is untagged, the switch assigns the frame to an associated VLAN (based on the PVID of the receiving port). • If the frame is tagged, the switch uses the tagged VLAN ID to identify the port broadcast domain of the ...
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4-4 CheetahSwitch Workgroup-4508 Forwarding T raffic with Unknown VLAN T ags Up to 2048 VLANs are supported by the IEEE 802.1Q protocol, but this switch only supports 16 VLANs. Therefore, if this switch is att ached to any device that forwards frames with unknown VLAN tags, or to endstations which issue VLAN registration requests for unknown VLANs, ...
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Management Guide 4-5 The purpose of IP multicast filtering is to optimize a switched network’ s performance, so multicast packet s will only be forwarded to those ports containing multicast group hosts or multicast routers/switches instead of flooding to all ports in the subnet (VLAN). The CheetahSwitch W orkgroup-4508, with IP multicast filterin ...
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4-6 CheetahSwitch Workgroup-4508 St atistics : Includes all the tools needed to monitor your network for common errors and overall traffic rates. Information is provided on bandwid th utilization, peak utilization, packet types, errors and collisions, as well as the distribution of packet sizes. History : Can be used to create a record of network u ...
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1 A-1 Appendix A: T roubleshooting Refer to the Quick Installation Guide for a more detailed listing of troubleshooting procedures. However , if you have trouble making a connection to the agent module, then please refer to the following section. Console Connection If you cannot access the on-board configuration program via a serial port, be sure t ...
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Accton Technology 4508 - page 92
A-2 CheetahSwitch Workgroup-4508 (c)Copyright 2000, Accton Inc. CheetahSwitch Workgroup-4508 LOADER Version V01.00.01 POST Version V01.00.01 ------ Performing the Power-On Self Test (POST) ------ EPROM Checksum Test ....................... PASS Testing the System SDRAM .................. PASS CPU Self Test ............................. PASS EEPROM ...
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Accton Technology 4508 - page 93
1 B-1 Appendix B: Pin Assignments DB9 Serial P or t Pin Description The DB9 serial port on the switch’s rear panel is used to connect the switch to a management device. The on-board menu-driven configuration program can be accessed from a terminal, a PC running a terminal emulation program, or from a remote location via a modem connection. Y ou c ...
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Accton Technology 4508 - page 94
B-2 CheetahSwitch Workgroup-4508 Connection from Switch's Serial Port to Modem's 25-Pin DCE Port n i P - 9 s ' h c t i w S t r o P l a i r e S l a n g i S T T I C C - 5 2 s ' m e d o M t r o P M O C n i P 1- - - - - - - D C D - - - - - - <8 2- - - - - - - D X R - - - - - - <3 3> - - - - - - D X T - - - - - - - -2 4> ...
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Accton Technology 4508 - page 95
ES4508 E022000-R01 150065-102 ...
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