Manuale d’uso / di manutenzione del prodotto AT-GS950/8 del fabbricante Allied Telesis
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613-000375 Rev. B Management Software AT-S82 User’s Guide For the AT-GS950/8 Layer 2 Gigab it Ethernet WebSmart Switch Version 1.1.0.
Copyright © 2007 Allied T elesis, Inc. All rights reserved. No part of this publication may be repr oduced withou t prior written permissi on from Allied Telesis, Inc. Allied Telesis is a trademark of Allied Telesis, Inc. Microsof t and Internet Explorer are registered trademarks of Microsoft Corporation.
3 Preface ........ ................ ............. ................ ................ ............. ................. ................ ......................... ................. . 7 Where to Find Web-based Gu ides ................ ................ ....
Contents 4 Tagged Port Members ............... ................ ................ ................ ................ ................ ............. ............. 45 Untagged Port Members ............... ................ ... .......... ................ .
5 Figure 1. Login Dialog Box ............... .............. .............. .............. .............. .............. .............. . .......... ............... ........... .......... 12 Figure 2. Main Page .................... .............. .....
Figures 6.
7 Pr eface This guide contains instructions on ho w to use the AT-S82 management software to manage the AT-GS950/8 Sma rt Switch switch. This preface contains the f ollowing sections: “Where to .
Preface 8 Where to Find Web-based Guides The installation and user guides for all Allied Telesis products a re available in portable document format ( PDF) on our web site at www.alliedtelesis.com . You can view the documents online or download them onto a local workstation or server.
AT-S82 Management Software Use r’s Guide 9 Contacting Allied Telesis This section provides Allied Telesis contact information for technica l support as well as sales and corporate information. Online Support You can request technical support onli ne by accessing the Allied Telesis Knowledge Base from the following website: www.
Preface 10.
11 Chapter 1 Getting S tarted This chapter provides information and instructions on h ow to access the AT-S82 management software by starting a web browser management session.
Chapter 1: Get ting Started 12 Starting a Management Session You establish a local management se ssi on with the AT-GS950/8 switch by connecting an Ethernet cable to one of the eight ports on the front panel of the switch. To start a management session, perform t he following procedure: 1.
AT-S82 Management Software Use r’s Guide 13 The main p age, which by default disp lays the Basic Switch Inform ation page, is shown in Figure 2. Figure 2.
Chapter 1: Get ting Started 14 Saving Changes The management software applies the changes you make when you click the Apply button on any web page. However, the manag ement software does not automatically save th e changes you make to the co nfiguration file.
AT-S82 Management Software Use r’s Guide 15 Quitting a Management Session To quit a management session, clo se the web browser..
Chapter 1: Get ting Started 16.
17 Chapter 2 Basic Switch Parameters This chapter contains the following sections: “Configuring the IP Address, Subn et Mask, Gatewa y Address, and BOOTP or DHCP” on page 18 “Disabling or Enabling Ping Blocking” on p age 20 “Enabling or Disabling 802.
Chapter 2: Basic Switch Parameters 18 Configuring the IP Address, Su bnet Mask, Gateway Address, and BOOTP or DHCP Caution Allied Telesis strongly recommend s that you recor d the MAC address of this .
AT-S82 Management Software Use r’s Guide 19 a. In the IP Address field, enter the IP address. The default is 192.168.1.1. b. In the Subnet Mask field, type the subnet mask for the switch. The default is 255.255.255.0. c. In the Default Gateway field, type the I P address of the default gateway.
Chapter 2: Basic Switch Parameters 20 Disabling or Enabling Ping Blocking You can allow the switch to respond to ping requests by sett ing the Ping Blocking parameter. The default setting is enabled, which means th at the switch does not respond to ping requests.
AT-S82 Management Software Use r’s Guide 21 Enabling or Disabling 802. 1X Forwarding Control This procedure describes how to en able or disable 802.1x forwarding control. The default setting is disabl ed. When you disab le this feature, 802.1x packets are not forwarded.
Chapter 2: Basic Switch Parameters 22 Changing the Administrator’s Password To reset the administrator’s password, perform th e following procedure: 1. From the main menu, select Administrator Password . The Administrator Password p age is shown in Figure 5.
AT-S82 Management Software Use r’s Guide 23 Rebooting the Switch This procedure reboots the switch and reloads the AT-S82 management software from flash memory. You might reboot the device if you believe it is experiencing a problem. Rebooting the de vice does not change any of the device’s parameter setting s.
Chapter 2: Basic Switch Parameters 24 Resetting the Switch and Retaining the IP Address There are two options for rese tting the switch: resetting all the parameters except the IP address, or resetting the switch to return all the parameters to their default values.
AT-S82 Management Software Use r’s Guide 25 Returning the AT-S82 Management Software to the Factory Default Values This procedure returns all AT-S82 mana gement software paramet ers to their default values, including the IP address, which is reset to 192.
Chapter 2: Basic Switch Parameters 26 Downloading New Firmware To download new firmware onto the switch, perform the following procedure: 1. From the main menu, select Download Firmware . The Download Firmware page is sho wn in Figure 9. Figure 9. Download Firmware Page 2.
Section I: Using the Me nus Interface 27 Chapter 3 Port Configuration This chapter contains the following section: “Configuring Port Parameters” on pag e 28.
Chapter 3: Port Confi guration 28 Configuring Port Parameters This procedure explains how to configure the followin g port parameters: St a t e S peed and duplex mode Flow control Medium type (only for port s 7 and 8) To configure the ports, perform the following procedure: 1.
AT-S82 Management Software Use r’s Guide 29 Note Auto Speed/Duplex is disabled when you manually configure a port’s Speed/Duplex. In this situation, you must use a crossover Ethernet cable to connect that p ort to another network device. 2. To set the parameters for a port, choose the port using the From and To lists.
Chapter 3: Port Confi guration 30 10M/Half - 10Mbps, half duplex 10M/Full - 10Mbps, full duplex 100M/Half - 100Mbps, half duplex 100M/Full - 100Mbps, full duplex 1000M/Full - 1000Mbps, full duple x 1000M_M/Full - 1000Mbps, full duplex for port opera ting as a Master port at 1000Mbps in Force mode.
Section I: Using the Me nus Interface 31 Chapter 4 T runking This chapter contains the following sections: “T runking Overview” on page 32 “Configuring the T runking Algorithm” on page.
Chapter 4: Tru nking 32 Trunking Overview A port trunk is an economical wa y for you to increase the bandwid th between the Ethernet switch and another ne tworking device, such as a network server, router, workstation, or another Ethernet switch. A port trunk is a group of ports that have been grouped together to function as one logical path.
AT-S82 Management Software Use r’s Guide 33 distribution methods: MAC-SA - source MAC address MAC-DA - destination MAC address DAxorSA - destination MAC address/source MAC address.
Chapter 4: Tru nking 34 Configuring the Trunking Algorithm To configure the trunk load method, perform the following procedure: 1. From the main menu, select Trunking Algorithm . The T runking Algorithm page is sh own in Figure 12. Figure 12. Trunking Algorithm Page 2.
AT-S82 Management Software Use r’s Guide 35 Setting up the Trunk To set up the trunk, perform the fo llowing procedure: 1. From the main menu, select Port Trunking . The Port T runking page is shown in Figure 13. Figure 13. Port Trunking Page The current trunks, if any , are shown in the Current T runking Group Entries area.
Chapter 4: Tru nking 36 3. For the Group ID , choose a trunk group ID from th e list. IDs from 1 through 4 are available. Note that when you choose a group ID that ports are automatically selected on t he Port Map. You cannot designate any other ports for the trunk 4.
Section I: Using the Me nus Interface 37 Chapter 5 Port Mirr oring This chapter contains the following sections: “Port Mirroring Overview” on page 38 “Configuring Port Mirroring” on pa.
Chapter 5: Po rt Mirroring 38 Port Mirroring Overview The port mirroring feature allows you to unobtru sively monitor the ingress and egress traffic on a port on the swit ch by having the traffic copied to another switch port.
AT-S82 Management Software Use r’s Guide 39 Configuring Port Mirroring To configure the trunk load method, perform the following procedure: 1. From the main menu, select Port Mirroring . The Port Mirroring p age is shown in Figure 15. Figure 15. Port Mirroring Page 2.
Chapter 5: Po rt Mirroring 40.
Section I: Using the Me nus Interface 41 Chapter 6 VLANs This chapter contains the following sections: “VLAN Features” on p age 42 “VLAN Overview” on page 44 “Working with VLANs.
Chapter 6: VL ANs 42 VLAN Features A Virtual Local Area Network (VLAN) is a logical grouping of devices on different physical LAN segments tha t allows users to communicate as if they were physically connected to a single LAN, in dependent of the physical configuration of the network.
AT-S82 Management Software Use r’s Guide 43 VLANs can be used to control the flow of data in your network, since the traffic generated by an end-node in a VLAN is restricted to the o ther end- nodes in the same VLAN.
Chapter 6: VL ANs 44 VLAN Overview This VLAN overview contains the following sections: “VLAN Name,” next “VLAN Identifier” on p age 44 “VLAN Port Members” on page 44 “Inc.
AT-S82 Management Software Use r’s Guide 45 Tagged Port Members A port is a tagged member of a specific VLAN when it is a member of more than one VLAN. If a port is a tagged member of o ne VLAN, then the same port is also an untagged me mber of another VLAN.
Chapter 6: VL ANs 46 member of the VLAN). These frames are untagged after transmission from the switch. Guidelines for Creating a VLAN The following are guidelines fo r creating a VLAN.
AT-S82 Management Software Use r’s Guide 47 Working with VLANs This section contains the following procedures for working with VLANs: “Creating a VLAN,” next “Displaying all VLANs” on pag e 48 “Modifying a VLAN” on page 49 Creating a VLAN To create a VLAN, perform the following procedure: 1.
Chapter 6: VL ANs 48 3. In the VID field , supply a number for the VLAN ID, from 2 to 4094. 4. In the VLAN Na me field, enter a unique name for the VLAN. No spaces are allowed. 5. In the Tag row, select the ports that you want to be tagged members of the VLAN.
AT-S82 Management Software Use r’s Guide 49 The list of current VLANs is shown in Figure 18. Figure 18. Current VLANs Page Modifying a VLAN To modify the ports in a VLAN, perform the following procedure: 1. From the main menu, select VLAN Configuration .
Chapter 6: VL ANs 50 Protected Ports VLAN You use the protected ports VLAN featu re when you want to prevent ports from communicating with one another, but you want them all to have access to common resources.
AT-S82 Management Software Use r’s Guide 51 1. From the main menu, select Protected Port . The Protected Port p age is shown in Figure 21. Figure 21. Protected Port Page 2. Determine which port(s) will be the Prima ry port(s). 3. Click the box on the Isolated row for a ll ports that you want to isolate from one another.
Chapter 6: VL ANs 52.
Section I: Using the Me nus Interface 53 Chapter 7 Class of Service This chapter contains the following sections: “Class of Serv ice Overview ” on page 54 “Mapping Priorities to Queues.
Chapter 7: Class of Service 54 Class of Service Overview When the egress queues on a port in an Ethernet switch contains mo re packets than the port can handle in a timely man ner, the port may be forced to delay the transmission of some packets.
AT-S82 Management Software Use r’s Guide 55 Table 1 lists the mapping s between the eigh t CoS priority levels and the four egress queues of a switch port. For example, if a tagged packet wit h a priority level of 2 entered a port on the switch, the switch would store the packet in Q1 1 on the egress port.
Chapter 7: Class of Service 56 example. In this example, the port transmits a maximum of 25 packets from Q3, then 15 packets from Q2, and so forth. T able 2.
AT-S82 Management Software Use r’s Guide 57 Mapping Priorities to Queues To map priorities to queues, perform the following procedure: 1. From the main menu, select CoS Priority to Queue . The CoS Priorit y to Queue page is shown in Figure 22. Figure 22.
Chapter 7: Class of Service 58 Setting Up the Schedule To configure map ports to pr iority queues, perform the follo wing procedure: 1. From the main menu, select CoS Output Scheduling . The CoS Output Scheduling p age is shown in Figure 22. Figure 23.
AT-S82 Management Software Use r’s Guide 59 Assigning Priority to Ports To assign a priority to a specific port, perform the fo llowing procedure: 1. From the main menu, select CoS Port Priority Assignment . The CoS Port Priority Assignmen t page is shown in Figure 24.
Chapter 7: Class of Service 60.
Section I: Using the Me nus Interface 61 Chapter 8 Spanning T r ee Pr otocol (STP) This chapter contains the following sections: “S panning T ree Overview” on p age 62 “Configuring S pan.
Chapter 8: Spann ing Tree Protocol (STP) 62 Spanning Tree Overview The performance of a Ethernet network can be negatively impacted by the formation of a data loop in the network topolog y. A data loop exists when two or more nodes on a network can tran smit data to each other over more than one data path.
AT-S82 Management Software Use r’s Guide 63 You can change the bridge priority numbe r in the AT-S82 management software. You can designate which switch on your network you want as the root bridge by giving it the lowe st bridge priority number.
Chapter 8: Spann ing Tree Protocol (STP) 64 a bridge participating in STP has a cost associate d with it. The cost of a port on a bridge is typically based on port speed. The faster the port, the lower the port cost. The exception to this is the ports on the root bridge, where all ports have a port cost o f 0.
AT-S82 Management Software Use r’s Guide 65 trunk. You cannot set the port cost manually. Port Priority If two paths have the same port cost, the bridges must select a p referred path. In some instances this can invo lve the use of the port priority parameter.
Chapter 8: Spann ing Tree Protocol (STP) 66 change has occurred, especially if it is a large network. If a topology change is made before all bridges have been notified, a temporary data loop could occur, and that could a dversely impact network performance.
AT-S82 Management Software Use r’s Guide 67 Point-to-Point and Edge Ports Note This section applies only to RSTP. Part of the task of configu ring RSTP is defining the port types on the bridge.
Chapter 8: Spann ing Tree Protocol (STP) 68 Figure 26. Edge Port A port can be both a point-to-point and an edge port at the same time. It operates in full-duplex and has no ST P or RSTP devices co nnected to it. Figure 27 illustrates a port functioning a s both a point-to-point and e dge port.
AT-S82 Management Software Use r’s Guide 69 If you decide to activate spanning tr ee on the switch, there is no reason not to activate RSTP on an AT-GS950/8 WebSmart switch eve n when all other switches are running STP. The switch ca n combine its RSTP with the STP of the other switches.
Chapter 8: Spann ing Tree Protocol (STP) 70 information on tagged and untagged ports, refer to Chapter 6, “VLANs” on page 41.).
AT-S82 Management Software Use r’s Guide 71 Configuring Spanning Tree To define the spanning tree se ttings at the switch level, pe rform the following procedure: 1. From the main menu, select STP Global Settings . The Switch S panning T ree Settings p age is shown in Figure 29.
Chapter 8: Spann ing Tree Protocol (STP) 72 When you select a value for maximum age, observe the followin g rules: MaxAge must be greater than (2 x (HelloT ime + 1)). MaxAge must be less than (2 x (ForwardingDelay - 1)). Note The aging time for BPDUs is differ ent fro m the aging time used by the MAC address table.
AT-S82 Management Software Use r’s Guide 73 packet s but forwards them to adja cent switches. This is the default setting. Disabled The switch processes the BPDU packet s. Allied T elesis recommends that you choose t his setting. 10. Click Appl y . T o configure the port s, refer to “Configuring STP Port Settings,” next.
Chapter 8: Spann ing Tree Protocol (STP) 74 Configuring STP Port Settings To configure the ST P settings, perform the following proced ure: 1. From the main menu, select STP Port Settings . The STP Port Settings page is shown in Figure 30. Figure 30. STP Port Settings Page 2.
AT-S82 Management Software Use r’s Guide 75 This parameter is u sed as a tie breaker wh en two or more port s are determined to have equal co sts to the root bridge. The range is 0 to 240 in increments of 16. The de fault value is 8 (priority value 128).
Chapter 8: Spann ing Tree Protocol (STP) 76.
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il Allied Telesis AT-GS950/8 è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del Allied Telesis AT-GS950/8 - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Allied Telesis AT-GS950/8 imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Allied Telesis AT-GS950/8 ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Allied Telesis AT-GS950/8, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del Allied Telesis AT-GS950/8.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Allied Telesis AT-GS950/8. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Allied Telesis AT-GS950/8 insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
