ZyXEL Communications GS-1524 / GS-1548 manuale d’uso

www .zyxel.com www .zyxel.com GS-1524 / GS-1548 W eb Managed GbE Switch Copyright © 2009 ZyXEL Communications Corporation Firmware V ersion 1.12 Edition 2, 5/2009 Default Login Details IP Address http://192.168.1.1 User Name admin Pa ss wo rd 12 34[...]

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About This User's Guide GS-1524/GS- 1 54 8 Use r’s Guid e 3 About This User's Guide Intended Audience This manual is intended for people who w ant to configure the Switch using the web configurator . Y ou should have at least a basic knowledge of T CP/IP networking concepts and topology . Related Document ation •Q u i c k S t a r t G [...]

About This User's Guide GS-1524/GS-1548 User’s Guide 4 web/contact_us.php for contact information. Please have the following information ready when you contact an office. • Product model and serial number . •W a r r a n t y I n f o r m a t i o n . • Date that you received y our device. • Brief description of t he problem an d the ste[...]

Document Conventions GS-1524/GS- 1 54 8 Use r’s Guid e 5 Document Conventions W arnings and Notes These are how warnings and notes are shown in this User’ s Guide. W arnings tell you about things that could harm you or your device. Note: Notes tell you other import ant informat ion (for e xample, other things you may need to configure or help f[...]

Document Conventions GS-1524/GS-1548 User’s Guide 6 Icons Used in Figures Figures in this User’ s Guide may use the following generic icons. The Sw itch icon is not an exact representation of y our device. The Switch Computer Notebook computer Server DSLAM Firewa ll Te l e p h o n e Swi tch Ro u te r[...]

Safety Warnings GS-1524/GS- 1 54 8 Use r’s Guid e 7 Safety Warnings • Do NO T use this product near water , for exam ple, in a wet basement or n ear a swimming pool. • Do NO T expose your device to dampness, dust or corrosive liquids. • Do NO T store things on the device. • Do NOT install, use, or service this device during a thunderstorm[...]

Safety Warnings GS-1524/GS-1548 User’s Guide 8[...]

Contents Overview GS-1524/GS- 1 54 8 Use r’s Guid e 9 Contents Overview Introduction and Hardware Overview ..................................................... ............................. 17 Getting to Know Y our Switch .............. ................ ............. ................ ................ ............. ........... .. 19 Hardware Inst[...]

Contents Overview GS-1524/GS-1548 User’s Guide 10[...]

Table of Contents GS-1524/GS- 1 54 8 Use r’s Guid e 11 Table of Contents About This User's Guide ...................... ............................................................... ................... .. 3 Document Conventions.................................................................. ......................................... .5 Sa[...]

Table of Contents GS-1524/GS-1548 User’s Guide 12 Part II: Basic & Advanced Se ttings ...................................................... 33 Chapter 4 The Web Configurator .................................................................... ....................................... .3 5 4.1 Introduction ............ ... .... ............. ..[...]

Table of Contents GS-1524/GS- 1 54 8 Use r’s Guid e 13 8.2.1 IEEE 802.1Q VLAN Screen ............. ................ ................................................ .......... 58 8.2.2 Create IEEE 802.1Q VLAN Screen ....... ................................ ............. ............. .......... 59 8.2.3 Edit IEEE 802.1Q VLAN Screen ..............[...]

Table of Contents GS-1524/GS-1548 User’s Guide 14 14.1 Diagnostics Overv iew ......................... ............. ................. ............ ................. ............ .... ... 87 Chapter 15 Auto Denial of Service (DoS) .................................................................... ............................. 89 15.1 About Deni[...]

Table of Contents GS-1524/GS- 1 54 8 Use r’s Guid e 15 18.5 SNMP Notificati on . ................. ............ ................. ............. ................ ............. .................. 1 16 18.6 SNMP Trap S tation .......................... ................ ................. ............ ................. ............ ... .. .1 17 18.6.1[...]

Table of Contents GS-1524/GS-1548 User’s Guide 16 Appendix A IP Addresses and Subnetting .......................................................... ................. 153 Appendix B Legal Information ................................... ..................................................... ...... 163 Index...........................................[...]

17 P ART I Introduction and Hardware Overview Getting to Know Y our Switch (19) Hardware Installation and Connecti on (23) Hardware Overview (27)[...]

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GS-1524/GS- 1 54 8 Use r’s Guid e 19 C HAPTER 1 Getting to Know Your Switch This chapter introduces the main features and applications of the Switch. 1.1 Introduction Y our Switch is an intelligent l ay er 2 switch with 1000BA SE- T RJ-45 ports and mi ni- GBIC slots for fiber- optic tr ansceivers. The S witch features dual-personal ity ports, eac[...]

Chapter 1 Getting to Know Your Switch GS-1524/GS-1548 User’s Guide 20 In this example, all computers can share hi gh-speed applications on the server . T o expand the network, simply add more networking devi ces such as switches, routers, computers, print servers etc. Figure 1 Backbone Application 1.1.2 Bridging Example In this example applicatio[...]

Chapter 1 Getting to Kn ow Your Switch GS-1524/GS- 1 54 8 Use r’s Guid e 21 1.1.3 High Performance Switching Example The Switch is ideal for connecting two netw orks that need high b andwidth. In the following example, use trunking to connect these two networks. Switching to higher -speed LANs such as A TM (Asynchronous T ransmission Mode) is not[...]

Chapter 1 Getting to Know Your Switch GS-1524/GS-1548 User’s Guide 22 Shared resources such as a serv er can be used by al l ports in the same VLAN as the server . In the following figure only po rts that need access to the server need to be part of VLAN 1. P orts on the Swit ch can belong to other VLAN groups too. Figure 4 Shared Serve r Using V[...]

GS-1524/GS- 1 54 8 Use r’s Guid e 23 C HAPTER 2 Hardware Installation and Connection This chapter shows you how t o in stall and c onnect the Swit ch. 2.1 Freest anding Inst allation 1 Make sure the Switch is clean and dry . 2 Set the Swit ch on a smo oth, leve l surface strong enough to support the weight of the Switch and the c onnected cables.[...]

Chapter 2 Hardware Installation and Connection GS-1524/GS-1548 User’s Guide 24 Note: Do NOT block the ventilation ho les. Leave space between devices when stackin g. For proper ventilation, allow at least 4 inches (10 cm) of clearan ce at the front and 3.4 inches (8 cm) at the b ack of the Switch . This is especi ally importa nt for enclosed rack[...]

Chapter 2 Har d war e In sta lla tion an d Conn ec tion GS-1524/GS- 1 54 8 Use r’s Guid e 25 2 Using a #2 Philips s crewdriver , install the M3 flat head screws t hrough the mounting br acket holes into t he Switch. 3 Re peat steps 1 and 2 to install the second mounting br acket on the other side of the Switch. 4 Y ou may now moun t the Switch on[...]

Chapter 2 Hardware Installation and Connection GS-1524/GS-1548 User’s Guide 26[...]

GS-1524/GS- 1 54 8 Use r’s Guid e 27 C HAPTER 3 Hardware Overview This chapter describes the front panel and rear p anel of the S w itch and shows you how to make the hardware connections. 3.1 Front Panel The figures below show the front panel of the Switch. Figure 8 GS-1524 Front Pane l Figure 9 GS-1548 Front Pane l LEDs RJ-45 Gigabit Ethernet M[...]

Chapter 3 Har d war e Ov er vie w GS-1524/GS-1548 User’s Guide 28 The following table describes t he ports on the panels. 3.1.1 Ethernet Port s The GS-1524 has 24 auto-negotiating, aut o-crossover RJ-45 Gi gabit Ethernet ports. The GS-1548 has 48 auto-negotiating, aut o-crossover RJ-45 Gi gabit Ethernet ports. The speed of the Gigabit Ethernet po[...]

Chapter 3 Hardware Overview GS-1524/GS- 1 54 8 Use r’s Guid e 29 Y ou can change transc eivers while the S wi t ch is operating. Y ou can use different transceiv ers to connect to Ethernet switch es with different types of fiber-optic connectors. • T ype: SFP connection interface • Connection speed: 1 Gi gabit per second (Gbps) Note: T o avoi[...]

Chapter 3 Har d war e Over vie w GS-1524/GS-1548 User’s Guide 30 1 Open the transceiv er’s latch (latch styles v ary). Figure 12 Opening the T ransceiver ’s Latch Example 2 Pull the transceiver out of the slot. Figure 13 T ransceiver Removal Example 3.1.3 The RESET Button Re set the S witch to its factory default configur ati on via the RESET[...]

Chapter 3 Hardware Overview GS-1524/GS- 1 54 8 Use r’s Guid e 31 3.3 Rear Panel The following figures show the rear pane ls of the AC power input mod el Switch. The rear panel contains a receptacle fo r the power cord. The GS-1524’ s rear panel also contains the RESET button. Figure 14 GS-1524 Re ar Panel Figure 15 GS-1548 Re ar Panel 3.3.1 Pow[...]

Chapter 3 Har d war e Ov er vie w GS-1524/GS-1548 User’s Guide 32 3.4.1 Power Connector Make sure you are using the correct po wer source as shown on the panel. T o connect the power to the Switch, insert the female end of the power cord into the power receptacle on the rear panel. Connect the other end of the supplied power cord to a 100~240V AC[...]

33 P ART II Basic & Advanced Settings The W eb Configur ator (35) Sys te m ( 43 ) P ort Settings (49) System and P ort Statisti cs (53) VLAN (57) T runking (63) Mirroring (65) QoS (67) P ort R ate Limit and Storm Control (77) Layer 2 (L2) Man ageme n t (83) Cable Diagnostics (87) Auto Denial of Servic e (D oS ) (8 9 ) Auto V oIP (93)[...]

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GS-1524/GS- 1 54 8 Use r’s Guid e 35 C HAPTER 4 The Web Configurator This section introduces the config uratio n and functions of the web configurator . 4.1 Introduction The web configurator is an HTML -based management interface that allows easy setup and management of the Switch via In ternet browser . Use Internet Explorer 6.0 and later or Net[...]

Chapter 4 The Web Con figurator GS-1524/GS-1548 User’s Guide 36 3 The login screen appears. The defa ult username is admin and the associated default password is 12 34 . Figure 16 W eb Configurator: Login 4 Click Logi n to view the first web configurator screen. 4.3 The S t atus Screen The System screen is the first screen that displays when you [...]

Chapter 4 T he Web Configurator GS-1524/GS- 1 54 8 Use r’s Guid e 37 A - The LED panel displays the port status. B - The navigation panel has links to screens that let you configure the Switch’ s features. C - The function fr ame allows yo u to view and edit individual feature settings. D - Use the Help link to find out more information about t[...]

Chapter 4 The Web Con figurator GS-1524/GS-1548 User’s Guide 38 The following table descri bes the links in the na vigation panel. T able 4 Navigation Panel Links LINK DESCRIPTION System Use these screens to view general system information such as firmw are version, IP address and so on. Y ou can also use this screen to backup and restore your co[...]

Chapter 4 T he Web Configurator GS-1524/GS- 1 54 8 Use r’s Guid e 39 4.3.3 Change Y our Password After you log i n for the first time, it is recommended you change the default administr ator password. Click System , Password to displ a y the next screen. Figure 19 Change Administrator Login Password 4.4 Saving Y our Configuration When you are don[...]

Chapter 4 The Web Con figurator GS-1524/GS-1548 User’s Guide 40 4.5 Switch Lockout Y ou could block yourself (and all others) from using the web conf igurator if you: 1 Remo ve all the ports from t he default VLAN (default is VLAN 1) when no other VLANs exist. 2 Disable all ports. 3 Forget the password and/or IP address . 4 Enable Dynamic ARP wit[...]

Chapter 4 T he Web Configurator GS-1524/GS- 1 54 8 Use r’s Guid e 41 4.7 Logging Out of the W eb Configurator Click Logout in the navigati on panel to exit the web config urator . Y o u have t o log in with your password again after y ou log out. This is recommended after you finish a management session for securit y reasons. Figure 20 W eb Confi[...]

Chapter 4 The Web Con figurator GS-1524/GS-1548 User’s Guide 42[...]

GS-1524/GS- 1 54 8 Use r’s Guid e 43 C HAPTER 5 System This chapter describes the system s creens. 5.1 System Screen The home screen of the web configurator displays gener al system information and allows you to p e rf orm sy stem ma in tenance . Cl ic k System > Status in the navigation panel to vi ew device specific info rmation such as syst[...]

Chapter 5 Syst em GS-1524/GS-1548 User’s Guide 44 5.1.1 Configure IP Address Use the Configure IP Ad dress screen to set up the IP address manually . The following screen appears when you cl ick the existing IP address in the System > Status screen. Figure 22 Configure IP Address The following table describes t he labels in this screen. IP Add[...]

Chapter 5 System GS-1524/GS- 1 54 8 Use r’s Guid e 45 5.1.2 Layer 2 (L2) T able Aging L2 Table Aging defines the aging time of the Address R esolution Logic (ARL) table. This table l earns and remembers MAC addresses of devices sending information th roug h it. S ee Chapter 13 on page 83 for more background information. Click the link in the L2 T[...]

Chapter 5 Syst em GS-1524/GS-1548 User’s Guide 46 5.1.4 Restore Settings Rest ore a previously saved configuration fr om y our computer to the Switch using the Restore Settings screen. Figure 24 Restore Settings T ype the path and file name of the configur ation fil e you wish to restore in the Please select a saved configuration file text box or[...]

Chapter 5 System GS-1524/GS- 1 54 8 Use r’s Guid e 47 5.2 System: Change Password Use the Change Password screen to ch ange the admini strator username and password for the Switch. Click System > Password to view the screen as shown. Figure 26 System: Password The following table describes t he labels in this screen. 5.3 Firmware Upgrade Make [...]

Chapter 5 Syst em GS-1524/GS-1548 User’s Guide 48 From the System screen, click Upgrade in t he Firmware V ersion field to displa y the screen as shown next. Figure 27 Firmware Upgrade T ype the path and file name of the firm ware file y ou wish to upload to the Switch in the File Path text box or click Browse to locate it. After y ou have specif[...]

GS-1524/GS- 1 54 8 Use r’s Guid e 49 C HAPTER 6 Port Settings This chapter describes how to view and co nfigure the port settings on the Switch. 6.1 Port S t atus Use this screen to view S witch port sett ings. Click Port in the na vigation panel to display t he Port Status screen. Figure 29 Port S tatus The following table describes t he labels [...]

Chapter 6 Port Settings GS-1524/GS-1548 User’s Guide 50 6.2 Port Configuration Use this screen to configure individual po rt settings.Click a port number in the Port Status screen to access this screen. Figure 30 Port Configu ration The following table describes t he labels in this screen. Flow Control Enables access to buffering resources for th[...]

Chapter 6 Port Settings GS-1524/GS- 1 54 8 Use r’s Guid e 51 Flow Control A concentration of tr affic on a port decreases port bandwidth and ov erflows buffer memory causing packet discards and frame losses. Flow Control is used to regulate transmission of signals to match the bandwidth of the receiving port. The Switch uses IEEE802.3x flow contr[...]

Chapter 6 Port Settings GS-1524/GS-1548 User’s Guide 52[...]

GS-1524/GS- 1 54 8 Use r’s Guid e 53 C HAPTER 7 System and Port Statistics This chapter describes the o verview an d i ndividual port statisti cs screens. 7.1 Overview The statistics screen of th e web configurator displays a port statistic al summary with links to each port showing statistical details. 7.2 S t atistics Summary Click Statistics i[...]

Chapter 7 System and Port Stat istics GS-1524/GS-1548 User’s Guide 54 The following table describes t he labels in this screen. 7.3 Port S t atistics Click a number in the Port column in the Statistics screen to display individual port statistics. Use t his screen to check status and detailed performance data about an individual port on the S wit[...]

Chapter 7 System and Port Statistics GS-1524/GS- 1 54 8 Use r’s Guid e 55 The following table describes t he labels in this screen. T able 1 1 Status: Port Details LABEL DESCRIPTION R efresh Click this to retrieve the current information from the Switch and update this screen. P ort This field displa ys the port number y ou are viewing. TX The fo[...]

Chapter 7 System and Port Stat istics GS-1524/GS-1548 User’s Guide 56 T otalOctets T his is a count of all transmitted/received packets that which exceeded maximum size to receive fr ame length. T otalPkts This is a count of tr ansmitted/received packets (including bad packets, all unicast, broadcast, multicast and MAC control packets). 64 BytePk[...]

GS-1524/GS- 1 54 8 Use r’s Guid e 57 C HAPTER 8 VLAN This chapter shows you how t o configure IEEE 802.1Q tagged VL ANs. 8.1 Introduction to IEEE 802.1Q T a gged VLANs A tagged VLAN uses an explicit tag (VLAN ID) in the MAC header to identify the VLAN membership of a fr ame across bridge s - t hey are not confined to the switch on which they were[...]

Chapter 8 VLAN GS-1524/GS-1548 User’s Guide 58 VLAN-aware switc h, the Switch first de cide s where to forward the fr ame, and then inserts a VLAN tag reflecting the ingress port's default VID . The default PVID is VLAN 1 for all ports, but this can be changed. A broadcast fr ame (or a multicast frame for a multicast group that is known by t[...]

Chapter 8 VLAN GS-1524/GS- 1 54 8 Use r’s Guid e 59 The following table describes t he labels in this screen. 8.2.2 Create IEEE 802.1Q VLAN Screen See Section 8.1 on page 57 for more information on VLANs. Cli ck VLAN in the navigation panel to display the IEEE 802.1Q VLAN screen as shown next. Figure 34 VLAN: Create VLAN T able 12 VLAN: VLAN S ta[...]

Chapter 8 VLAN GS-1524/GS-1548 User’s Guide 60 The following table describes t he labels in this screen. 8.2.3 Edit IEEE 802.1Q VLAN Screen See Section 8.1 on page 57 for more information on VLANs. Cli ck VLAN in the navigation panel to display the IEEE 802.1Q VLAN screen as shown next. Figure 35 VLAN: Edit VLAN T able 13 VLAN: Create VLAN LABEL [...]

Chapter 8 VLAN GS-1524/GS- 1 54 8 Use r’s Guid e 61 The following table describes t he labels in this screen. T able 14 VLAN: Edit VLAN LABEL DESCRIPTION VLAN ID Select which VLAN you w ant to configure. Click Remove T his VLA N to remove this VLAN from the Switch. Note: VLAN 1 cannot be removed. Display All VLAN Click this button to go back to t[...]

Chapter 8 VLAN GS-1524/GS-1548 User’s Guide 62[...]

GS-1524/GS- 1 54 8 Use r’s Guid e 63 C HAPTER 9 Trunking This chapter shows you how t o logically aggr egate phy sical links t o form one logical, higher-bandwid th link. 9.1 T runking Overview T runking is the grouping of physical port s into one logical higher-capacity link. Y ou may want to trunk ports if for example, it is cheaper to use mult[...]

Chapter 9 Trunking GS-1524/GS-1548 User’s Guide 64 9.2 T runk Setting Screen Use this screen to aggregate groups of phys ical ports into one higher capacity link. Click Trunk Groups in the navigation panel to di splay the Tr unk Setting screen. Figure 36 T runk Setting The following table describes t he labels in this screen. T able 15 T runking:[...]

GS-1524/GS- 1 54 8 Use r’s Guid e 65 C HAPTER 10 Mirroring This chapter discusses port mirroring. 10.1 Port Mirroring Settings P ort mirroring allows you to copy traffic flow t o a monitor port (the port y ou copy the traffic to) in order that you can exam ine the tr affic from the mirrored port without inte rference . Click Mirror in the navigat[...]

Chapter 10 M irr or in g GS-1524/GS-1548 User’s Guide 66 Mirror T o The Mirror To (monitor) port is the port you copy the tr affic to in order to examine it in more detail without inte rfering with the traffic flow on the original port(s). Select the monitor port. Apply Click Apply to save your changes. T able 16 Mirror Setting (continued ) LABEL[...]

GS-1524/GS- 1 54 8 Use r’s Guid e 67 C HAPTER 11 QoS This chapter introduc es the quality of service (QoS) p arameters y ou can configure on the Switch. 1 1.1 QoS Overview QoS is used to help solv e performance degr adation when there is network congestion. Use the QoS Setting scr een to configure qu euing algorithm s for outgoing traffi c. Queui[...]

Chapter 11 Q oS GS-1524/GS-1548 User’s Guide 68 1 1.1.2 S trict Priority Strict priority scheduling singles out th e highest priority queue and ensures all queued traffi c in thi s queu e is transmi tted before servicing the lower priorit y queues. Strict priority scheduling servic es the remaining queues using WRR. As traffic comes into the Swi [...]

Chapter 11 QoS GS-1524/GS- 1 54 8 Use r’s Guid e 69 1 1.3 Configuring QoS Use the QoS Setting screen to specify a queuing method and configure queue weights for the Switch. Click QoS in the navigation panel to view the following screen. Figure 38 QoS Setting The following table describes t he labels in this screen. T able 17 QoS Setting LABEL DES[...]

Chapter 11 Q oS GS-1524/GS-1548 User’s Guide 70 1 1.3.1 Change Number of Queues Use the Change Number of Queu es screen to edit the number of queues on the Switch. Click Change in the QoS Setting screen to view the following screen. Figure 39 Change Number of Queu es Select the number of queues from the Number of Queues drop down list box and cli[...]

Chapter 11 QoS GS-1524/GS- 1 54 8 Use r’s Guid e 71 Note: Advanced QoS methods only af fect the internal priority queue mapping for the Switch. The Switch does not modify the IEEE 802.1p value for the egress frames. 1 1.4.1 Port Based QoS Y ou can configur e the Switch to assign a IEEE 802.1p priority to pack ets based on the ingress (incoming) p[...]

Chapter 11 Q oS GS-1524/GS-1548 User’s Guide 72 The following table describes t he labels in this screen. 1 1.4.2 DSCP Based QoS The Switch allows y ou to create a mapping tabl e between Differentiated Services Code P oints (DSCPs) tags and IEEE 802.1p pri ority tags. 1 1.4.3 Differentiated Services Code Point (DSCP) Overview Differentiated Servi[...]

Chapter 11 QoS GS-1524/GS- 1 54 8 Use r’s Guid e 73 Y ou can configure the DSCP to IEEE 802.1p mapping to allow the Swit ch to prioritize all tr affi c based on the incoming DSCP v alue according to the DiffServ to IEEE 802.1p mapping table. 1 1.4.4 DSCP Based QoS Screen Y ou can configure the Switch to assign a IEEE 8 02.1p priority to packets c[...]

Chapter 11 Q oS GS-1524/GS-1548 User’s Guide 74 The following table describes t he labels in this screen. 1 1.4.5 T oS Based QoS Y ou can configure the Switch to assign a IEEE 8 02.1p priority to packets coming into the Switc h wi t h T ype of Se rv ic e ( T oS) pr iority assign ed to them. Se lect ToS Based QoS in the QoS Enhancement Setting scr[...]

Chapter 11 QoS GS-1524/GS- 1 54 8 Use r’s Guid e 75 The following table describes t he labels in this screen. 1 1.4.6 IP Address Based QoS Y ou can configure the Switch to assign a higher priorit y to packets coming into the Switch from speci fic IP addresses. Select IP Address Based QoS in the QoS Enhancement Setting screen to view the following[...]

Chapter 11 Q oS GS-1524/GS-1548 User’s Guide 76 The following table describes t he labels in this screen. T able 21 IP Address Based QoS LABEL DESCRIPTION Mode Select IP Address Based QoS to give higher or lower priority to packets coming into the Switch from a specified source IP address. Add Entry Enter the IP address and the subn et mask of th[...]

GS-1524/GS- 1 54 8 Use r’s Guid e 77 C HAPTER 12 Port Rate Limit and Storm Control This chapter shows you how y ou can manage bandwidth on each port and set up broadcast storm control settings us ing the Port Rate and Storm Control screens. 12.1 Port Rate Screen Rate control means defining a maximum allow able bandwidth for incoming and/or out-go[...]

Chapter 12 Po rt Rate Lim it and Storm Control GS-1524/GS-1548 User’s Guide 78 The following table describes t he related labels in this screen. 12.1.1 Rate Limit Screen Click a port n umber in t he Port Rate screen to bring up the screen as shown next. Figure 45 Rate Limit Configurat ion The following table describes t he related labels in this [...]

Chapter 12 Port Rate Li mit and Storm Control GS-1524/GS- 1 54 8 Use r’s Guid e 79 12.1.2 Broadcast St orm Control Setup Broadcast storm control limits the number of broadcast, multicast and unknown unicast (also referred to as Destination L ookup F ailure or DLF) packets the Swit ch receives per second on the ports. Wh en the maximum number of a[...]

Chapter 12 Po rt Rate Lim it and Storm Control GS-1524/GS-1548 User’s Guide 80 Click Rate > Storm Control in the navigation panel to dis play the screen as shown next. Figure 46 Broadcast S torm Control[...]

Chapter 12 Port Rate Li mit and Storm Control GS-1524/GS- 1 54 8 Use r’s Guid e 81 The following table describes t he labels in this screen. T able 24 Broadcast S torm Control LABEL DESCRIPTION P ort Select the port number for which you w ant to configure storm control settings or select Apply settings to all ports to configure all the ports at o[...]

Chapter 12 Po rt Rate Lim it and Storm Control GS-1524/GS-1548 User’s Guide 82[...]

GS-1524/GS- 1 54 8 Use r’s Guid e 83 C HAPTER 13 Layer 2 (L2) Management Use these screens to add, delete and vi ew entries in the Layer 2 (L2) address table. 13.1 Configuring L2 Management Layer 2 (L2) management refers to management based on the Media Access Control (MAC) address of networking devi ces. A static Media Access Control (MAC) addre[...]

Chapter 13 Layer 2 (L 2) Management GS-1524/GS-1548 User’s Guide 84 13.1.1 Add a St atic MAC Address Entry Click Add in the L2 Address Management screen to display the conf igur ation screen as shown. Figure 48 Add a S tatic MAC Entry The following table describes t he labels in this screen. Item This is the index number of the static MAC address[...]

Chapter 13 Layer 2 (L2) Ma nagement GS-1524/GS- 1 54 8 Use r’s Guid e 85 13.2 V iewing the L2 Address T able Use the L2 Address Table screen to view entries in the MAC address table. Cli ck L2 Address > Display in the navigation panel to displa y the screen as shown. Figure 49 Display L2 Address T able The following table describes t he labels[...]

Chapter 13 Layer 2 (L 2) Management GS-1524/GS-1548 User’s Guide 86[...]

GS-1524/GS- 1 54 8 Use r’s Guid e 87 C HAPTER 14 Cable Diagnostics This chapter explains the Cable Diagnostics scre en. 14.1 Diagnostics Overview The cable diagnostics function works wi th systems using CA T -5 twisted-pair cables. The Switch can perform basic cable diagnostics. Click Cable Diagnostic in the navigation panel to view the screen as[...]

Chapter 14 Cable Diagnostics GS-1524/GS-1548 User’s Guide 88 Status This field displays the results of the test: Ok - the cable is working properly . Open - there is no cable connected to the port or the cable is damaged. Short - there is a short along the cable. Short-between-pair - there is a short between two twisted pairs of cable. P air A ..[...]

GS-1524/GS- 1 54 8 Use r’s Guid e 89 C HAPTER 15 Auto Denial of Service (DoS) This chapter shows you how t o configure automatic Denial of Servi ce prevention on the Switch. 15.1 About Denial of Service Att acks Denial of Service (DoS) attacks try to di sable a device or network so users no longer have access to network resources. The Switch has [...]

Chapter 15 Auto Den ial of Se rvic e (Do S) GS-1524/GS-1548 User’s Guide 90 15.2 Global Auto DoS Att ack Prevention Use the Global Auto DoS Attack Prevention screen to configure DoS attack prevention set tings for the Switch. Click Auto DoS in the navigation panel to open the following screen. Figure 51 Global Auto DoS Attack Prevention The follo[...]

Chapter 15 Auto Denial of Service (DoS) GS-1524/GS- 1 54 8 Use r’s Guid e 91 15.3 Advanced Auto DoS Att ack Prevention Use the Advanced Auto DoS Attack Prevention screen to configure DoS attack prevention setti ngs for individual ports . Click the Advanced li nk in the Global Auto DoS Attack Prevention screen to view the following screen. Figure [...]

Chapter 15 Auto Den ial of Se rvic e (Do S) GS-1524/GS-1548 User’s Guide 92[...]

GS-1524/GS- 1 54 8 Use r’s Guid e 93 C HAPTER 16 Auto VoIP This chapter shows you how to giv e higher priorit y to V oice over Internet Protocol (V oIP) packets ov er other data packet s as they pass through the Switch. 16.1 About Auto V oIP V oice ov er Internet Protocol (V oIP) allows telephone calls to be made over a data network like the In t[...]

Chapter 16 Auto VoIP GS-1524/GS-1548 User’s Guide 94 16.2 Auto V oIP Settings Use the Auto VoIP Settings to enable automatic assign ment of high priority t o V oIP packet s passing through the Switch. Click Auto VoIP in the navigation panel to view the foll o wing sc re en. Figure 53 Auto V oIP Settings The following table describes t he labels i[...]

95 P ART III Management and T roubleshooting Event Logging (97) SNMP (105) RMON-Lite (121) Dynamic ARP (137) T roubleshooting (141) Product Specifications (145)[...]

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GS-1524/GS- 1 54 8 Use r’s Guid e 97 C HAPTER 17 Event Logging This chapter shows you dif ferent ways to inspect logs and how to configure an external log server . 17.1 Event Logging Overview Y ou can configure the Switch to save sp ecific events in different log targets: RAM - This log is saved into the Switch’ s volati le memory . The logs ar[...]

Chapter 17 Event Logging GS-1524/GS-1548 User’s Guide 98 17.2 Logging Screen Use this screen to specify which system ev ents should be reco rded and where the log messages should be sa ve d. Click Logging > Settings in the navigation panel to view the scre en as shown. Figure 54 Loggin g The following table describes t he labels in this screen[...]

Chapter 17 Ev en t Lo ggi ng GS-1524/GS- 1 54 8 Use r’s Guid e 99 17.3 Logging: Add Server Use this screen to configure a new syslog entry . Click Add Server in the Log ging screen to view the screen as shown. Figure 55 Loggin g: Add Server The following table describes t he labels in this screen. 17.4 V iewing RAM and Flash Logs Use these screen[...]

Chapter 17 Event Logging GS-1524/GS-1548 User’s Guide 100 Note: The RAM Logs and Flash Logs screen contain the same fie lds as the Logs - RAM or Logs - Flash screen in the following figure. Figure 56 Logs: RAM/Flash The following table describes t he labels in this screen. T able 35 Logs: RAM/Flash LABEL DESCRIPTION Search Click this to search fo[...]

Chapter 17 Ev en t Lo ggi ng GS-1524/GS- 1 54 8 Use r’s Guid e 101 Category This field displays what category the log entry fits. Th e categories are based on software and hardware features of the Switch. For example the category AUTODOS records events which deal with the Auto Denial of Service features you set up and the category SYSTEM records [...]

Chapter 17 Event Logging GS-1524/GS-1548 User’s Guide 102 17.5 Searching RAM and Flash Logs Use these screens to search RAM and Flash logs based on level and category . Click the Search link in the Logs - RAM or Logs - Flash screen to view the screen as shown. Figure 57 Searching: RAM/Flash Logs[...]

Chapter 17 Ev en t Lo ggi ng GS-1524/GS- 1 54 8 Use r’s Guid e 103 The following table describes t he labels in this screen. 17.5.1 Search Result s The Search Results - RAM/Flash screen displays t he results of your log query . Click Submit in the Logs - Search screen to view the logs which match your search criteria. Figure 58 Logs: Se arch Re s[...]

Chapter 17 Event Logging GS-1524/GS-1548 User’s Guide 104 The following table describes t he labels in this screen. T able 37 Logs: Search Result s LABEL DESCRIPTION Index This field indicates the index number of the log. This number doesn’t change even if some logs are deleted from the Switch due to memory limits. Th e index number increments [...]

GS-1524/GS- 1 54 8 Use r’s Guid e 105 C HAPTER 18 SNMP This chapter describes how to user Simp le Network Management Protocol (SNMP) to manage and monitor the Switch. 18.1 About SNMP Simple Network Manageme nt Protocol (SNM P) is an application layer protocol used to manage and monitor T CP/IP-based devices. SNMP is used to ex change management i[...]

Chapter 18 SN MP GS-1524/GS-1548 User’s Guide 106 The managed devices contain object v ariables/managed objects that d efine each piece of informat ion to be collected ab out the device. Examples of v ariables include number of pack ets received, node port status and so on. A Management Information Base (MIB) is a collection of managed objects. S[...]

Chapter 18 SNMP GS-1524/GS- 1 54 8 Use r’s Guid e 107 18.1.2 SNMP T rap s The Switch send s traps to an SNMP m an a ger when an event occurs. SNMP tr aps supported are outlined in t he following table. 18.1.3 SNMP v3 and Authentication SNMP v3 adds the concep t of groups an d users to enhance security fo r SNMP management. A user is an SNMP manag[...]

Chapter 18 SN MP GS-1524/GS-1548 User’s Guide 108 The following table describes t he labels in this screen. 18.2 SNMP Group An SNMP group is a set of managers that are assigned common access rights to agent MIBs. Y ou can also choo se to have all managers in a group authenticate with agents. Use the SNMP Group screen to create SNMP groups. Click [...]

Chapter 18 SNMP GS-1524/GS- 1 54 8 Use r’s Guid e 109 18.2.1 SNMP Group: Create Use the SNMP Group: Create s c r e e n t o a d d a n S N M P g r o u p. C l ic k o n t h e Create New Group link in the SNMP Group screen. The screen displays as shown. Figure 62 SNMP Group: Create The following table describes t he labels in this screen. Access This [...]

Chapter 18 SN MP GS-1524/GS-1548 User’s Guide 11 0 18.2.2 SNMP Group: Modify Click on the Group ID nu m b er or se lect a Group ID from the Group ID drop down list box in the SNMP Group screen to modify the set tings of an existing group. Figure 63 SNMP Group: Mod ify The following table describes t he labels in this screen. 18.3 SNMP User An SNM[...]

Chapter 18 SNMP GS-1524/GS- 1 54 8 Use r’s Guid e 111 Switch. Use the SNMP User screen to create SNMP users and associ ate them to SNMP groups. Click SNMP > User to view the screen as shown. Figure 64 SNMP User The following table describes t he labels in this screen. T able 44 SNMP User LABEL DESCRIPTION User ID Select the SNMP user you w ant[...]

Chapter 18 SN MP GS-1524/GS-1548 User’s Guide 11 2 18.3.1 SNMP User: Create Y ou must configure an SNMP group first before you can create an SNMP user . Click on the Create New User link in the SNMP User screen to add an SNMP user . The screen displays as shown. Figure 65 SNMP User: Create The following table describes t he labels in this screen.[...]

Chapter 18 SNMP GS-1524/GS- 1 54 8 Use r’s Guid e 11 3 18.3.2 SNMP User: Modify Click on the User ID number or select a User ID from the User ID drop down list box in the SNMP User screen to modify the settings of an existing user . Figure 66 SNMP User: Modify The following table describes t he labels in this screen. T able 46 SNMP User: Modify L[...]

Chapter 18 SN MP GS-1524/GS-1548 User’s Guide 11 4 18.4 SNMP Community SNMP communities act lik e passwords an d are used to define the security parameters of SNMP clients in an SN MP v1 and SNMP v2c en vironments. The default SNMP community is “public” for bo th SNMP v1 and SNMP v2c before SNMP v3 is enabled. Once SNMP v3 is enable d, the co[...]

Chapter 18 SNMP GS-1524/GS- 1 54 8 Use r’s Guid e 11 5 18.4.1 SNMP Community: Create Click on the Create N ew Community link in the SNMP Community screen to add an SNMP community . The screen displays as shown. Figure 68 SNMP Community: Create The following table describes t he labels in this screen. T able 48 SNMP Community: Cre ate LABEL DESCRI[...]

Chapter 18 SN MP GS-1524/GS-1548 User’s Guide 11 6 18.4.2 SNMP Community: Modify Click on the Community ID num ber or select a Community ID from the Community ID drop down list box in the SNMP Community screen to modify the settings of an existing c ommunity . Figure 69 SNMP Community: Mod ify The following table describes t he labels in this scr[...]

Chapter 18 SNMP GS-1524/GS- 1 54 8 Use r’s Guid e 11 7 • Authentication Notification - F ailed au thentication attempts are logged by the Swit ch . Use the SNMP Notification section of the SNMP Trap Station screen to enable the notification mechanisms. Click SNMP > Trap Station to view the screen as shown. Figure 70 SNMP Notification The fol[...]

Chapter 18 SN MP GS-1524/GS-1548 User’s Guide 11 8 to enable the sen d ing of SNMP traps to a remo te S N MP managem e n t s ta tion(s). Click SNMP > Trap Station to view the screen as shown. Figure 71 SNMP T rap S tation The following table describes t he labels in this screen. T able 51 SNMP T rap S tation LABEL DESCRIPTION T r ap Station ID[...]

Chapter 18 SNMP GS-1524/GS- 1 54 8 Use r’s Guid e 11 9 18.6.1 SNMP T rap S t ation: Create Click on the Create New Trap Station link in the SNMP Trap Stati on screen to add an SNMP T rap Station. The screen displays as s hown. Figure 72 SNMP T rap S tation: Create The following table describes t he labels in this screen. 18.6.2 SNMP T rap S t ati[...]

Chapter 18 SN MP GS-1524/GS-1548 User’s Guide 120 The following table describes t he labels in this screen. T able 53 SNMP T rap S tation: Modify LABEL DESCRIPTION T r ap ID This fie ld indicates whic h trap station you ar e m odifying. Click on Remove This Trap Station to delete this trap station configuration f rom the Switch . Click on Display[...]

GS-1524/GS- 1 54 8 Use r’s Guid e 121 C HAPTER 19 RMON-Lite This chapter explains how to confi gure the RMON-Lite screens. 19.1 RMON-Lite Overview The R emote Network Monitoring Management Information Base (RM ON MIB) defines objects for managing remot e ne twork monitoring devices. T he remote network monitoring devices, refer red to as monitors[...]

Chapter 19 RMON-Lite GS-1524/GS-1548 User’s Guide 122 19.2 RMON S t atistics: Overview Click RMON-Lite in t he navigation panel to open the RMON Statistics: Overview screen. Use this screen to look at and configure settings for gathering statistics for the Ethernet ports on the Swit ch. Figure 74 RMON S tatistics: Overview The following table des[...]

Chapter 19 RMON-Lite GS-1524/GS- 1 54 8 Use r’s Guid e 123 19.3 RMON-Lite S t atistics: Port Use this screen to enable st atistics gathering and view th e stat istics for individual ports. Click on a port number in the RMON Statistics: Overview screen to view the screen as shown. Figure 75 RMON S tatistics: Port The following table describes t he[...]

Chapter 19 RMON-Lite GS-1524/GS-1548 User’s Guide 124 19.4 RMON-Lite History MIB RMON-Lite History MIB configur ation is divided into two parts: [2] History Control and [2] History Statistics . StatsMulticastPkts This field displays the total number of good multicast packets received. StatsCRCAlignErrors This field displays the number of packets [...]

Chapter 19 RMON-Lite GS-1524/GS- 1 54 8 Use r’s Guid e 125 •U s e t h e [2] History Control screens to view and define the statisti cal sampling of data from activit y in your network. Statis tical sampling is controlled by defining the interface ( port), polling pe riod and the number of samples to be taken per polling peri od. •U s e t h e [...]

Chapter 19 RMON-Lite GS-1524/GS-1548 User’s Guide 126 19.4.2 RMON History Control: Modify Use the RMON History Control: Modi fy sc re e n t o de f i ne t h e s ta t i s t ic a l s am p l i ng of data from activity in your netw ork. Click an index num ber in the RMON History Control: Overview scre en to see the scre en as shown. Figure 77 RMON His[...]

Chapter 19 RMON-Lite GS-1524/GS- 1 54 8 Use r’s Guid e 127 19.4.3 RMON History S t atistics: Overview Use the RMON History Statis tics: Overview screen to view the results of statistical sampling on the ports . Select [2] History Statistics from the RMON MIB Table: drop down list box in the RMON-Lite screen to view the screen as shown. Figure 78 [...]

Chapter 19 RMON-Lite GS-1524/GS-1548 User’s Guide 128 19.4.4 RMON History S t atistics: Control Use the RMON History Statistics: Control screen to view the details of each polling sample collected for the history control index ent ries you configured. Click on an individual History Control Index entry in the RMON History Statistics: Overview scre[...]

Chapter 19 RMON-Lite GS-1524/GS- 1 54 8 Use r’s Guid e 129 19.5 RMON Alarm: Overview Use the RMON Alarm: Ov erview screen to view config ured alarms that occur when the sampled data exceed s the specified threshold. T o open this screen select [3] Alarm in the RMON MIB Table: drop down list box i n the RMON-Lite screen. Figure 80 RMON Alarm: Over[...]

Chapter 19 RMON-Lite GS-1524/GS-1548 User’s Guide 130 The following table descri bes the labels in this screen. 19.5.1 RMON Alarm: Create New Alarm Use the RMON Alarm: Create New A larm screen to configure RMON alarms. Click Create new Alarm view the screen as shown. Y ou can also click an alarm index entry in the RMON Alarm: Overview screen to e[...]

Chapter 19 RMON-Lite GS-1524/GS- 1 54 8 Use r’s Guid e 131 Note: The RMON Alarm: Modify screen cont ains the same fields as the RMON Alarm: Create New Alarm screen in the following figure. Figure 81 RMON Alarm: Create Ne w Alarm The following table describes t he labels in this screen. T able 61 RMON Alarm: Create New Alarm LABEL DESCRIPTION RMON[...]

Chapter 19 RMON-Lite GS-1524/GS-1548 User’s Guide 132 19.6 RMON Event: Overview Use the RMON Event: Overview screen t o view and del ete event entries configured on the Switch. Select [9] E vent from the RMON MIB Table: drop down listbox in the RMON-Lite screen to view the screen as shown. Figure 82 RMON Event: Overview . The following table desc[...]

Chapter 19 RMON-Lite GS-1524/GS- 1 54 8 Use r’s Guid e 133 19.6.1 RMON Event: Create New Event Use the RMON Event: Create and the RMON Event: Modify screens to configure RMON events. Click Create new Event in the RMON Event: Overview screen to view the screen as shown. Y ou can also click an event index number in the RMON Event: Overview screen t[...]

Chapter 19 RMON-Lite GS-1524/GS-1548 User’s Guide 134 19.7 RMON Event Log: Overview Use the RMON Event Log: Overview screen to view the event log entries generated on the S w it ch. All the entries in this table are gener ated by the RMON- Lite probe when the event v alue meets the risingEventThreshold or fallingEventThreshold assigned in the RMO[...]

Chapter 19 RMON-Lite GS-1524/GS- 1 54 8 Use r’s Guid e 135 19.7.1 RMON Event Log: Event Use the RMON Event Log: Event screen to view the detai ls of existing RMON event log en tries. Clic k on the sp ecific Event Index nu mbers in the RMON Event Log: Overview screen to view the screen as shown. Figure 85 RMON Event Log: Event The following table [...]

Chapter 19 RMON-Lite GS-1524/GS-1548 User’s Guide 136[...]

GS-1524/GS- 1 54 8 Use r’s Guid e 137 C HAPTER 20 Dynamic ARP This chapte r describes how to activate dy namic Address Resolution Protoc ol (ARP) learning and how to enter static ARP table entries. 20.1 ARP T able Overview Address Resolution Protocol (ARP) is a pr otocol for mapping an Internet Protocol address (IP address) to a physi c al machin[...]

Chapter 20 Dy nam i c ARP GS-1524/GS-1548 User’s Guide 138 20.2 Enabling Dynamic ARP Click Dynamic ARP > Settings in the naviga tion panel to open th e following screen. Use the Dynamic ARP screen to configure ARP filtering on the specified VLANs. Figure 86 Dynamic ARP The following table describes t he labels in this screen. T able 66 ARP Tab[...]

Chapter 20 Dynamic ARP GS-1524/GS- 1 54 8 Use r’s Guid e 139 20.3 V iewing ARP T able Entries Click Dynamic ARP > ARP Entries in the navigation panel to open the following screen. Use this screen to view and add entries to the ARP table. Figure 87 V iewing ARP T able Entries The following table describes t he labels in this screen. Disable Dyn[...]

Chapter 20 Dy nam i c ARP GS-1524/GS-1548 User’s Guide 140 20.4 Adding ARP T able Entries Click ADD in the Dynamic ARP > ARP Entries screen to open the Add Static MAC-IP binding screen. Use this screen to add entries to the ARP table. Figure 88 V iewing ARP T able Entries The following table describes t he labels in this screen. T able 68 ARP [...]

GS-1524/GS- 1 54 8 Use r’s Guid e 141 C HAPTER 21 Troubleshooting This chapter offers some suggesti ons to solv e problems y ou might encounter . The potential problems are divided into the following categories . • P ower , Hardware Connections, and LEDs • Switch Access and L ogin 21.1 Power , Hardware Connections, and LEDs The Switch does no[...]

Chapter 21 Tro u blesh oo tin g GS-1524/GS-1548 User’s Guide 142 5 If the problem continues, contac t the vendor . 21.2 Switch Access and Login I forgot the IP addr ess for the Switch. 1 The default IP address is 192.168.1.1 . 2 If this does not work, you have to reset the device to its fact ory defaults. See Section 3.4 on page 31 . I forgot the[...]

Chapter 21 Troubleshooting GS-1524/GS- 1 54 8 Use r’s Guid e 143 5 Reset the devic e to its factory defaults , and try to access the Switch with the default IP address. See Section 3.4 on page 31 . 6 If the problem continues, contac t the vendor , or try one of the advanced suggestions. Advanced Suggestions T ry to access the Switch using another[...]

Chapter 21 Tro u blesh oo tin g GS-1524/GS-1548 User’s Guide 144[...]

GS-1524/GS- 1 54 8 Use r’s Guid e 145 C HAPTER 22 Product Specifications This chapter gives detai ls about your Sw itch’ s hardware and firmware features. 22.1 General Switch S pecifications The following tables list the product specifications. T able 69 Physical and Environmental Specifications LEDs Per Switch: PWR P er Gigabit port: LNK/ACT ,[...]

Chapter 22 Product Specifications GS-1524/GS-1548 User’s Guide 146 T able 70 General Product Specifications Interface GS-1524: 20 1000BASE- T RJ-45 Gigabit Ethernet ports GS-1548: 44 1000BASE- T RJ-45 Gigabit Ethernet ports 4 Dual-personality interfaces, each consisting of one 1000BASE- T RJ- 45 Gigabit Ethernet port and one Mini-GBIC (Small F or[...]

Chapter 22 Product Specifications GS-1524/GS- 1 54 8 Use r’s Guid e 147 Layer 2 Fea t ur e s VLAN T ag-based (IEEE 802.1Q) VLAN Number of VLAN: 4K, 256 static maximum Por t Aggregation Supports static port trunking Six groups (up to 8 ports each) Por t mirroring All ports support port mirroring Rate control Supports rate limiting from 64 Kbps to [...]

Chapter 22 Product Specifications GS-1524/GS-1548 User’s Guide 148 This section describes the gener al software feat ures of the Switch. T able 72 Firmware Features FEATUR E DESCRIPTION VLAN A VLAN (Virtual Local Are a Network) allows a physical network to be partitioned into multiple logical networks. Devices on a logical network belong to one g[...]

Chapter 22 Product Specifications GS-1524/GS- 1 54 8 Use r’s Guid e 149 RMON-Lite R emote Network Monitoring Management (RMON) allows you to gather information about the S witch’s performance, view statistics and create alarms. Cable Diagnostics Use this feature to inspect the Ethernet cables connected to the Switch for shorts, open faults or s[...]

Chapter 22 Product Specifications GS-1524/GS-1548 User’s Guide 150[...]

151 P ART IV Appendices and Index IP Addresses and Subnetting (151) Legal Information (163) Index (167)[...]

152[...]

GS-1524/GS- 1 54 8 Use r’s Guid e 153 A PPENDIX A IP Addresses and Subnetting This appendix introduces IP addresses and subnet masks. IP addresses identify indi vidual devices on a network. Every networking device (including computers, serv ers, routers, printers, etc.) needs an IP address to communicate across the netw ork. These networking devi[...]

Appendix A IP Addres ses and Subnetting GS-1524/GS-1548 User’s Guide 154 The following figure shows an example IP address in which the first three octets (192.168.1) are the network number , and the fourth octet (16) is the host ID . Figure 89 Network Number and Host ID How much of the IP address is the networ k number and how much is the host ID[...]

Appendix A IP Addresses and Subnetting GS-1524/GS- 1 54 8 Use r’s Guid e 155 By conv ention, subnet masks alw ays cons ist of a continuous sequence of ones beginning from the leftmost bit of the mask, followed by a continuous sequence of zeros, for a total number of 32 bits. Subnet masks can be referred to by the size of the network number part ([...]

Appendix A IP Addres ses and Subnetting GS-1524/GS-1548 User’s Guide 156 As these two IP addresses cannot be us ed for individual hosts, calculat e the maximum number of possible host s in a network as follows: Not ation Since the mask is alw ays a continuo us number of ones beginning f rom the left, followed by a continuous number of zeros for t[...]

Appendix A IP Addresses and Subnetting GS-1524/GS- 1 54 8 Use r’s Guid e 157 In this example, the company network address is 192.168.1.0. The first three octets of the address (192.168.1) are the network number , and the remaining octet is the host ID, allowing a maximum of 2 8 – 2 or 254 possible hosts. The following figure shows the company n[...]

Appendix A IP Addres ses and Subnetting GS-1524/GS-1548 User’s Guide 158 The following figure shows the company network after subnet ting. There are now two sub-n etworks, A and B . Figure 91 Subnettin g Example: After Subnetting In a 25-bit subnet the host ID has 7 bits , so each sub-net work has a maximum of 2 7 – 2 or 126 possibl e hosts (a [...]

Appendix A IP Addresses and Subnetting GS-1524/GS- 1 54 8 Use r’s Guid e 159 Each subnet contains 6 host ID bit s, giving 2 6 - 2 or 62 hosts for each subnet (a host ID of all zeroes i s the subnet it self , all ones is the subnet’ s broadcast address). T able 77 Subnet 1 IP/SUBNET MASK NETWORK NUMBER LAST OCTET BIT VA L U E IP Address (Decimal[...]

Appendix A IP Addres ses and Subnetting GS-1524/GS-1548 User’s Guide 160 Example: Eight Subnet s Similarly , use a 27-bit mask to create eight subnets (000, 001, 010, 011, 100, 101, 110 and 111). The following table shows IP address last octet values for each sub net. Subnet Planning The following table is a summary for subnet planning on a netwo[...]

Appendix A IP Addresses and Subnetting GS-1524/GS- 1 54 8 Use r’s Guid e 161 Configuring IP Addresses Where you obtain your network number depends on your particular situation. If the ISP or your network administrat or assigns you a block of registered IP addresses, follow their instructions i n selecting th e IP addresse s and the sub n et mask.[...]

Appendix A IP Addres ses and Subnetting GS-1524/GS-1548 User’s Guide 162 Private IP Addresses Every machine on the In ternet must ha ve a uni que address. If your ne tworks are isolated from the Internet (running only between two br anch offices, for example) you can assign an y IP addresses to the hosts without problems. However , the Internet A[...]

GS-1524/GS- 1 54 8 Use r’s Guid e 163 A PPENDIX B Legal Information Copyright Copyright © 2009 by Z yXEL Communications Corpor ation. The contents of this publication ma y not be reproduced in any part or as a whole, transcrib ed, stored in a retriev al syst em, tr anslated into an y language , or transmitted in an y form or by any me ans, elect[...]

Appendix B Leg al In fo rm at ion GS-1524/GS-1548 User’s Guide 164 • This dev ice m u st accept any in terferen ce received, including interference that may cause undesired operations. FCC W arning This device has been tested and found to comply with the limits for a Clas s A digital switch, pursuant to Part 15 of the FCC Rules . These limits a[...]

Appendix B Legal Information GS-1524/GS- 1 54 8 Use r’s Guid e 165 Viewing Certifications 1 Go to http://www . zyxel.com . 2 Select your prod uct on the Z yXEL home page to go to that product's page. 3 Select the certification y ou wish to view from this page. ZyXEL Limited W arranty Z yXEL warr ants to the original end user (p urchaser) tha[...]

Appendix B Leg al In fo rm at ion GS-1524/GS-1548 User’s Guide 166[...]

Index GS-1524/GS- 1 54 8 Use r’s Guid e 167 Index A adding VLANs 59 Address R esolution Logic (ARL) table 45 Address R esolution Protocol (ARP) 137 alternative subnet mask notation 156 applications backbone 19 bridging 20 IEEE 802.1Q VLAN 21 switched workgroup 21 ARL (Address R esolution Logic) table 45 ARP how it works 137 viewing 138 , 139 , 14[...]

Index GS-1524/GS-1548 User’s Guide 168 firmware 43 upgrade 47 firmware v ersion 43 flow control 51 back pressure 51 IEEE802.3x 51 forwarding b ased on MAC 84 front panel 27 G general features 146 getting help 41 H hardware installation 23 mounting 24 hardware ov erview 27 help, web configur ator 41 I IANA 162 ingress mirror 65 installation freest[...]

Index GS-1524/GS- 1 54 8 Use r’s Guid e 169 N NA T 161 network management 147 network management system (NMS) 105 O open, cable fault 88 P password 39 port details 54 port mirroring 65 , 146 , 147 port security 89 overview 89 port settings 49 , 50 port statistics 53 ports mirroring 65 speed/duplex 50 power connector 32 power supply specifications[...]

Index GS-1524/GS-1548 User’s Guide 170 object variables 106 protocol operations 106 setup 107 traps 107 user 11 0 versi ons supp orte d 105 SNMP (Simple Network Management Protocol) 105 SNMP traps 107 SP (Strict Priority) queuing 67 static MAC address 83 static MAC forwarding 83 , 85 status 36 LED 30 port details 48 , 54 VLAN 58 , 60 subnet 153 s[...]