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Chapter 21 Troubleshooting

ES-1528 User’s Guide

140

Figure 89

Internet Options

Type the IP address of your device (the web page that you do not want to have blocked)
with the prefix “http://”. For example, http://192.168.1.1.

Click

Add

to move the IP address to the list of

Allowed sites

Figure 90

Pop-up Blocker Settings

Click

Close

to return to the

Privacy

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Содержание ES-1528 - V1.12

Страница 1: ...www zyxel com ES 1528 Ethernet Switch User s Guide Version 1 12 10 2006 Edition 1...

Страница 2: ......

Страница 3: ...nline Help Embedded web help for descriptions of individual screens and supplementary information It is recommended you use the web configurator to configure the switch Supporting Disk Refer to the in...

Страница 4: ...is denoted by square brackets and uppercase text for example ENTER means the enter or return key on your keyboard Enter means for you to type one or more characters and then press the ENTER key Select...

Страница 5: ...uide 5 Icons Used in Figures Figures in this User s Guide may use the following generic icons The switch icon is not an exact representation of your device ES 1528 Computer Notebook computer Server DS...

Страница 6: ...ect ports Place connecting cables carefully so that no one will step on them or stumble over them Always disconnect all cables from this device before servicing or disassembling Use ONLY an appropriat...

Страница 7: ...Safety Warnings ES 1528 User s Guide 7 This product is recyclable Dispose of it properly...

Страница 8: ...Safety Warnings ES 1528 User s Guide 8...

Страница 9: ...nced Settings 41 The Web Configurator 43 System 49 Port Settings 55 System and Port Statistics 59 VLAN 63 Trunking 67 Mirroring 69 QoS 71 Port Rate Limit and Storm Control 79 Level 2 L2 Management 83...

Страница 10: ...Contents Overview ES 1528 User s Guide 10...

Страница 11: ...2 Bridging Example 28 1 1 3 High Performance Switching Example 28 1 1 4 IEEE 802 1Q VLAN Application Examples 29 Chapter 2 Hardware Installation and Connection 31 2 1 Freestanding Installation 31 2 2...

Страница 12: ...n 47 4 5 Switch Lockout 47 4 6 Resetting the Switch 47 4 7 Logging Out of the Web Configurator 48 4 8 Help 48 Chapter 5 System 49 5 1 System Screen 49 5 1 1 Configure IP Address 50 5 1 2 Level 2 L2 Ta...

Страница 13: ...10 1 Port Mirroring Settings 69 Chapter 11 QoS 71 11 1 QoS Overview 71 11 1 1 Weighted Round Robin WRR 71 11 1 2 Strict Priority 71 11 2 QoS Enhancement 72 11 3 Configuring QoS 72 11 3 1 Change Number...

Страница 14: ...Auto DoS Attack Prevention 90 Chapter 16 Auto VoIP 93 16 1 About Auto VoIP 93 16 2 Auto VoIP Settings 93 Part III Management and Troubleshooting 95 Chapter 17 Event Logging 97 17 1 Event Logging Overv...

Страница 15: ...2 RMON History Control Modify 123 19 4 3 RMON History Statistics Overview 124 19 4 4 RMON History Statistics Control 125 19 5 RMON Alarm Overview 126 19 5 1 RMON Alarm Create New Alarm 127 19 6 RMON E...

Страница 16: ...ts ES 1528 User s Guide 16 Part IV Appendices and Index 145 Appendix A Product Specifications 147 Appendix B IP Addresses and Subnetting 151 Appendix C Legal Information 159 Appendix D Customer Suppor...

Страница 17: ...b Configurator Login 44 Figure 15 Web Configurator Home Screen System 44 Figure 16 LED Panel 45 Figure 17 Change Administrator Login Password 47 Figure 18 Web Configurator Logout Link 48 Figure 19 Sys...

Страница 18: ...ment Model 105 Figure 58 SNMP EngineID 107 Figure 59 SNMP Group 107 Figure 60 SNMP Group Create 108 Figure 61 SNMP Group Modify 109 Figure 62 SNMP User 110 Figure 63 SNMP User Create 110 Figure 64 SNM...

Страница 19: ...135 Figure 87 Pop up Blocker 138 Figure 88 Internet Options 139 Figure 89 Internet Options 140 Figure 90 Pop up Blocker Settings 140 Figure 91 Internet Options 141 Figure 92 Security Settings Java Sc...

Страница 20: ...List of Figures ES 1528 User s Guide 20...

Страница 21: ...etting 73 Table 18 Port Based QoS 74 Table 19 DSCP Based QoS 76 Table 20 ToS Based QoS 77 Table 21 IP Address Based QoS 78 Table 22 Rate Limit and Storm Control 79 Table 23 Rate Limit Configuration 80...

Страница 22: ...cs Overview 124 Table 58 RMON History Statistics Control 125 Table 59 RMON Alarm Overview 126 Table 60 RMON Alarm Create New Alarm 127 Table 61 RMON Event Overview 128 Table 62 RMON Event Configuratio...

Страница 23: ...List of Tables ES 1528 User s Guide 23 Table 82 Eight Subnets 156 Table 83 24 bit Network Number Subnet Planning 157 Table 84 16 bit Network Number Subnet Planning 157...

Страница 24: ...List of Tables ES 1528 User s Guide 24...

Страница 25: ...25 PART I Introduction and Hardware Overview Getting to Know Your Switch 27 Hardware Installation and Connection 31 Hardware Overview 35...

Страница 26: ...26...

Страница 27: ...147 for a full list of software features available on the switch 1 1 1 Backbone Application The switch is an ideal solution for small networks where rapid growth can be expected in the near future Th...

Страница 28: ...network managers to centralize multiple servers at a single location Figure 2 Bridging Application 1 1 3 High Performance Switching Example The switch is ideal for connecting two networks that need h...

Страница 29: ...same group s unless such traffic first goes through a router For more information on VLANs refer to Chapter 8 on page 63 1 1 4 1 Tag based VLAN Example Ports in the same VLAN group share the same fra...

Страница 30: ...Chapter 1 Getting to Know Your Switch ES 1528 User s Guide 30...

Страница 31: ...ight of the switch and the connected cables Make sure there is a power outlet nearby 3 Make sure there is enough clearance around the switch to allow air circulation and the attachment of cables and t...

Страница 32: ...ments Two mounting brackets Eight M3 flat head screws and a 2 Philips screwdriver Four M5 flat head screws and a 2 Philips screwdriver Failure to use the proper screws may damage the unit 2 2 1 1 Prec...

Страница 33: ...witch on a rack Proceed to the next section 2 2 3 Mounting the Switch on a Rack 1 Position a mounting bracket that is already attached to the switch on one side of the rack lining up the two screw hol...

Страница 34: ...Chapter 2 Hardware Installation and Connection ES 1528 User s Guide 34...

Страница 35: ...bps Fast Ethernet the speed can be 10Mbps or 100Mbps and the duplex mode can be half duplex or full duplex 10 100 Mbps Ethernet Ports LEDs RJ 45 Gigabit Ports for stacking Mini GBIC Slots RESET Button...

Страница 36: ...ts for mini GBIC transceivers A transceiver is a single unit that houses a transmitter and a receiver The switch does not come with transceivers You must use transceivers that comply with the SFP Tran...

Страница 37: ...e transceiver out of the slot Figure 12 Transceiver Removal Example 3 2 The RESET Button The switch allows you to reset the switch to its factory default configuration via the RESET button Press the R...

Страница 38: ...PWR Green On The system is turned on Off The system is off 10 100 Mbps Ethernet Ports LNK ACT Amber Blinking The system is transmitting receiving to from a 10 100 Mbps Ethernet network On The link to...

Страница 39: ...er s Guide 39 GBIC Slots LNK Green On The port has a successful connection Off No Ethernet device is connected to this port ACT Green Blinking The port is receiving or transmitting data Table 2 LEDs c...

Страница 40: ...Chapter 3 Hardware Overview ES 1528 User s Guide 40...

Страница 41: ...b Configurator 43 System 49 Port Settings 55 System and Port Statistics 59 VLAN 63 Trunking 67 Mirroring 69 QoS 71 Port Rate Limit and Storm Control 79 Level 2 L2 Management 83 Cable Diagnostics 87 Au...

Страница 42: ...42...

Страница 43: ...recommended screen resolution is 1024 by 768 pixels In order to use the web configurator you need to allow Web browser pop up windows from your device Web pop up blocking is enabled by default in Win...

Страница 44: ...LOGIN to view the first web configurator screen 4 3 The Status Screen The System screen is the first screen that displays when you access the web configurator The following figure shows the navigating...

Страница 45: ...reen if the corresponding port has a 1 Gbps connection 100 This LED is green if the corresponding port has a 100 Mbps connection Full This LED is green if the corresponding port is transmitting in ful...

Страница 46: ...iagnostic Use this screen to perform cable testing on individual ports Auto DoS Use these screens to activate security features against Denial of Service DoS attacks Auto VoIP Use these screens to con...

Страница 47: ...fault 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 without entering the proper MAC to IP address binding 4 6 Resett...

Страница 48: ...Web Configurator Click Logout in the navigation panel to exit the web configurator You have to log in with your password again after you log out This is recommended after you finish a management sess...

Страница 49: ...ION Device Name This read only field displays the name of your switch Firmware Version This field displays the version number of the switch s current firmware Click Upgrade to go to the firmware upgra...

Страница 50: ...eld to see the screen as shown next L2 Table Aging This field displays whether the L2 Table Aging is enabled or disabled Click Enabled Disabled to change the L2 Table Aging settings Backup settings Cl...

Страница 51: ...ve As screen 3 Choose a location to save the file on your computer from the Save in drop down list box and type a descriptive name for it in the File name list box Click Save to save the configuration...

Страница 52: ...in this screen 5 3 Firmware Upgrade Make sure you have downloaded and unzipped the correct model firmware and version to your computer before uploading to the device 1 Be sure to upload the correct mo...

Страница 53: ...click Browse to locate it After you have specified the file click Upgrade After the firmware upgrade process is complete see the System Status screen to verify your current firmware version number 5 3...

Страница 54: ...Chapter 5 System ES 1528 User s Guide 54...

Страница 55: ...the labels in this screen Table 8 Port Status LABEL DESCRIPTION Refresh Click this to update the PORT Status screen Port This identifies the Ethernet port Click a port number to display the Port Confi...

Страница 56: ...manually When the switch s auto negotiation is turned off a port uses the pre configured speed and duplex mode when making a connection thus requiring you to make sure that the settings of the peer po...

Страница 57: ...identifying an existing VLAN The switch tags the incoming untagged frames on that port so that the frames are forwarded to the VLAN group that the tag defines Apply Click Apply to save your changes t...

Страница 58: ...Chapter 6 Port Settings ES 1528 User s Guide 58...

Страница 59: ...port showing statistical details 7 2 Statistics Summary Click Statistics in the navigation panel to view the screen as shown Use this screen to view the traffic counters for the switch Figure 29 Stati...

Страница 60: ...the Port Details screen refer to Figure 30 on page 60 Tx This field shows the number of transmitted frames on this port Rx This field shows the number of received frames on this port Table 10 Statist...

Страница 61: ...of transmitted received packets with length less than the minimum packet size OversizePkts This is a count of transmitted received packets with length more than the maximum packet size Fragments This...

Страница 62: ...the number of packets including bad packets received that were between 512 and 1023 octets in length 1024 1518 BytePkts This field shows the number of packets including bad packets received that were...

Страница 63: ...possible maximum number of 4 096 VLANs Note that user priority and VLAN ID are independent of each other A frame with VID VLAN Identifier of null 0 is called a priority frame meaning that only the pri...

Страница 64: ...VLAN ID Select which VLAN you want to configure or click Create New VLAN to go to the new VLAN configuration screen VLAN Status Table This table shows you the existing VLANs and their configurations V...

Страница 65: ...le states are empty This indicates that the port is not part of the VLAN T This indicates that this port is a member of the VLAN When the packet leaves the member port the VLAN tag is added U This ind...

Страница 66: ...t this port is a member of the VLAN When the packet leaves the member port the VLAN tag is added U This indicates that this port is a member of the VLAN When the packet leaves the member port the VLAN...

Страница 67: ...able ports you have A trunk group is one logical link containing multiple ports 9 1 1 Distribution Criterion The switch uses a traffic distribution algorithm to balance traffic between trunk members T...

Страница 68: ...fy Trunk Group Member Configure the following settings to create and modify trunk groups Trunk id Select the trunk you want to modify or select a trunk id which is not yet configured to create a new t...

Страница 69: ...o the monitor port Figure 35 Mirror Setting The following table describes the labels in this screen Table 16 Mirror Setting LABEL DESCRIPTION Mode Select Enabled to turn on port mirroring or select Di...

Страница 70: ...Chapter 10 Mirroring ES 1528 User s Guide 70...

Страница 71: ...ber of queues being used This works in a looping fashion until a queue is empty Weighted Round Robin WRR scheduling uses the same algorithm as round robin scheduling but services queues based on their...

Страница 72: ...oS Assign priority to packets based on their Differentiated Services Code Points DSCPs See Section 11 4 2 on page 75 ToS Based QoS Assign priority to packets based on their Type of Service ToS tagging...

Страница 73: ...ts can only be changed when Weighted Round Robin is selected Weighted Round Robin scheduling services queues on a rotating basis based on their queue weight the number you configure in the queue Weigh...

Страница 74: ...e QoS Enhancement Setting screen to view the following screen Figure 38 Port Based QoS The following table describes the labels in this screen Table 18 Port Based QoS LABEL DESCRIPTION Mode Select Por...

Страница 75: ...raffic is going DiffServ defines a new DS Differentiated Services field to replace the Type of Service ToS field in the IP header The DS field contains a 2 bit unused field and a 6 bit DSCP field whic...

Страница 76: ...switch Change Priority Configure the following DSCP Select the DSCP priority for which you want to change a priority mapping Priority Select the IEEE 802 1p priority you want to assign to the packets...

Страница 77: ...nge Priority Configure the following TOS Select the ToS priority for which you want to change a priority mapping Priority Select the IEEE 802 1p priority you want to assign to the packets with the ToS...

Страница 78: ...fields to edit existing IP address based QoS entries Select the index of an existing IP address based QoS entry This is the same value as listed in the ID column of this screen Select the Priority you...

Страница 79: ...control means defining a maximum allowable bandwidth for incoming and or out going traffic flows on a port Click Rate Port Rate in the navigation panel to bring up the screen as shown next Figure 42...

Страница 80: ...ng the rate limit of outgoing traffic on the port in Kbps This value changes depending on the number of Tokens Added Per Interval Tokens Added Per Interval The switch uses a Token Bucket algorithm to...

Страница 81: ...packets are discarded Enable this feature to reduce broadcast multicast and unknown unicast packets in your network Click Rate Storm Control in the navigation panel to display the screen as shown next...

Страница 82: ...he amount of broadcast packets received per second Broadcast and multicast to specify a limit for the amount of broadcast and multicast packets received per second Broadcast and unknown unicast to spe...

Страница 83: ...Address Management in the navigation panel to display the configuration screen as shown Figure 45 L2 Management The following table describes the labels in this screen Table 25 L2 Management LABEL DE...

Страница 84: ...t This field displays the port number of a manually entered MAC address entry Delete Click DELETE to remove this manually entered MAC address entry from the MAC address table Table 25 L2 Management co...

Страница 85: ...e L2 Address table Item This is the index number of the MAC address entry Source MAC This field displays the MAC address VID This field displays the VID of a manually entered MAC address entry Port Th...

Страница 86: ...Chapter 13 Level 2 L2 Management ES 1528 User s Guide 86...

Страница 87: ...the port you want to test Apply Click this to perform cable testing on the specified port Status This field displays the results of the test Ok the cable is working properly Open there is no cable con...

Страница 88: ...Chapter 14 Cable Diagnostics ES 1528 User s Guide 88...

Страница 89: ...nding a specially crafted packet to a machine where the source host port is the same as the destination host port The system attempts to reply to itself resulting in system lockup SYNFIN scans SYNchro...

Страница 90: ...vanced Auto DoS Attack Prevention screen to configure DoS attack prevention settings for individual ports Click the Advanced link in the Global Auto DoS Attack Prevention screen to view the following...

Страница 91: ...e Prevention Select the types of attacks you want to prevent or choose Select All to prevent all types of attacks and scans supported by the switch See Section 15 1 1 on page 89 for more information o...

Страница 92: ...Chapter 15 Auto Denial of Service DoS ES 1528 User s Guide 92...

Страница 93: ...ly matches VoIP packets in Ethernet switches and provides them with the highest class of service The AutoVoIP feature provides the capability to assign the highest priority for the following VoIP pack...

Страница 94: ...labels in this screen Table 32 Auto VoIP Settings LABEL DESCRIPTION Profiles Select Disable if you don t want to give higher priority to VoIP traffic or select IP Phone to give the highest priority t...

Страница 95: ...95 PART III Management and Troubleshooting Event Logging 97 SNMP 105 RMON Lite 119 Dynamic ARP 133 Troubleshooting 137...

Страница 96: ...96...

Страница 97: ...e memory You can view the logs even after the switch is rebooted Due to the space limitations on the switch the oldest log entries are overwritten as new events are recorded Server You can configure s...

Страница 98: ...failures such as events which will cause the switch to malfunction and events such as invalid user input in the web configurator Warning to record non critical errors on the switch The switch will co...

Страница 99: ...h Table 34 Logging Add Server LABEL DESCRIPTION Name Enter a short descriptive name for identifying this server IP Address Enter the IP address in dotted decimal notation of the syslog server you want...

Страница 100: ...he log event The possible severity levels are Error to record system failures such as events which will cause the switch to malfunction and events such as invalid user input in the web configurator Wa...

Страница 101: ...Chapter 17 Event Logging ES 1528 User s Guide 101 Figure 55 Searching RAM Flash Logs...

Страница 102: ...mended to track as it creates many messages not helpful to typical users Category Select All to search all categories or specify the individual categories you want to search The categories are based o...

Страница 103: ...nts which deal with the Auto Denial of Service features you set up and the category SYSTEM records events which deal with the overall operation of the switch Time This field specifies the time when th...

Страница 104: ...Chapter 17 Event Logging ES 1528 User s Guide 104...

Страница 105: ...re 57 SNMP Management Model An SNMP managed network consists of two main components agents and a manager An agent is a management software module that resides in a managed switch the switch An agent t...

Страница 106: ...nt Groups are assigned access rights to SNMP objects Users are members of groups and are therefore limited to the access rights the group has In addition users can also be required to authenticate bef...

Страница 107: ...creen to create SNMP groups with different levels of access to the switch Click SNMP Group to view the screen as shown Figure 59 SNMP Group The following table describes the labels in this screen Tabl...

Страница 108: ...ts and W indicates that this group has write rights on the switch Previous Page Next Page Use these navigation links to browse all of your SNMP groups Table 40 SNMP Group continued LABEL DESCRIPTION T...

Страница 109: ...screen as shown Table 42 SNMP Group Modify LABEL DESCRIPTION Group ID This field indicates which group you are modifying Click on Remove This Group to delete this group configuration from the switch...

Страница 110: ...used for identification only Click on the individual user number to edit the user settings User Name This field displays the name of the SNMP user Group Name This field displays the name of the SNMP...

Страница 111: ...igure the Key field to force this user to authenticate with the switch Key Enter the MD5 key this user must use to authenticate with the switch Create Click this to add this SNMP user to the switch Ca...

Страница 112: ...our settings to the switch Table 45 SNMP User Modify continued LABEL DESCRIPTION Table 46 SNMP Community LABEL DESCRIPTION Community ID Select the SNMP community you want to edit Create New Community...

Страница 113: ...Community Create LABEL DESCRIPTION Community String An SNMP community string is a text string that acts as a password It is used to authenticate messages that are sent between the management station...

Страница 114: ...Modify LABEL DESCRIPTION User ID This field indicates which community you are modifying Click on Remove This Community to delete this user configuration from the switch Click on Display All Community...

Страница 115: ...L DESCRIPTION Enable SNMP Notification Select this to enable the sending of SNMP traps to a remote SNMP management station Enable Authentication Notification Select this to enable logging of failed au...

Страница 116: ...ed to authenticate messages that are sent between the management station the SNMP manager and the device the SNMP agent The community string is included in every packet that is transmitted between the...

Страница 117: ...p station you are modifying Click on Remove This Trap Station to delete this trap station configuration from the switch Click on Display All Trap Station to view the main SNMP Trap Station screen Remo...

Страница 118: ...Chapter 18 SNMP ES 1528 User s Guide 118...

Страница 119: ...of managing a network There are a total of nine RMON MIB groups defined in RFC 2819 The switch supports four of the RMON MIB groups Group 1 Statistics Group 2 History Group 3 Alarm Group 9 Event The s...

Страница 120: ...able Use this drop down list box to select the MIB table you want to view Click Apply to refresh the screen to the selected MIB table view Refresh Click this to update all the fields in the RMON Lite...

Страница 121: ...ed StatsBroadcastPkts This field displays the total number of good broadcast packets received StatsMulticastPkts This field displays the total number of good multicast packets received StatsCRCAlignEr...

Страница 122: ...w StatsPkts64Octets This field displays the number of packets including bad packets received that were 64 octets in length StatsPkts65to127Octets This field displays the number of packets including ba...

Страница 123: ...s the configuration index number Data Source This is the port of the switch polled for data Bucket Requested This field displays the number of data samplings the network manager requests the probe to...

Страница 124: ...e statistical sampling on the port Apply Click this to save the settings on the switch History Control Overview Click this to go back to the RMON History Control Overview screen Table 56 RMON History...

Страница 125: ...mple Octets This field displays the total number of octets received in this polling sample Packets This field displays the total number of all good packets received in this polling sample Broadcast Pa...

Страница 126: ...trol continued LABEL DESCRIPTION Table 59 RMON Alarm Overview LABEL DESCRIPTION RMON MIB Table Use this drop down list box to select the MIB table you want to view Click Apply to refresh the screen to...

Страница 127: ...responds to the time when the alarm threshold was crossed Falling Event Index This field indicates the index number of the event entry which corresponds to the time when the alarm threshold was crosse...

Страница 128: ...ve name of the application that creates this entry You can use 1 64 printable ASCII characters Spaces are not allowed Apply Click this to save the settings to the switch Alarm Overview Click this to g...

Страница 129: ...vent configuration Table 61 RMON Event Overview continued LABEL DESCRIPTION Table 62 RMON Event Configuration Screens LABEL DESCRIPTION RMON MIB Table Use this drop down list box to select the MIB tab...

Страница 130: ...n use 1 64 printable ASCII characters Spaces are not allowed Apply Click this to save the settings to the switch Event Overview Click this to go to the RMON Event Overview screen Table 62 RMON Event C...

Страница 131: ...to view Click Apply to refresh the screen to the selected MIB table view Refresh Click this to update all the fields in the RMON Event Log Event Index screen Log Index This field displays a log index...

Страница 132: ...Chapter 19 RMON Lite ES 1528 User s Guide 132...

Страница 133: ...ble is populated with MAC and corresponding IP address mappings in two different ways DHCP Snooping The switch listens to traffic from a DHCP server on a trusted port and learns IP to MAC address bind...

Страница 134: ...er the ARP table entries for an unlimited time period Trusted ports Packets arriving on trusted ports bypass all Dynamic ARP validation checks and those arriving on untrusted ports undergo the validat...

Страница 135: ...binding ADD This field is only available when you enable dynamic ARP in the Dynamic ARP Settings screen Click ADD to add a static entry to the ARP table See Section 20 4 on page 135 Item This is the...

Страница 136: ...of the network device you want to be allowed to communicate via the switch An example entry of a MAC address is 0a b1 c2 d3 e4 f5 IP Address Enter the corresponding IP address in dotted decimal notati...

Страница 137: ...re problem In this case you should contact your vendor Table 69 Troubleshooting Accessing the Switch PROBLEM CORRECTIVE ACTION I cannot access the web configurator The administrator username is admin...

Страница 138: ...ck 2 or allow pop up blocking and create an exception for your device s IP address 21 2 1 1 1 Disable pop up Blockers 1 In Internet Explorer select Tools Pop up Blocker and then select Turn Off Pop up...

Страница 139: ...e this setting 21 2 1 1 2 Enable pop up Blockers with Exceptions Alternatively if you only want to allow pop up windows from your device see the following steps 1 In Internet Explorer select Tools Int...

Страница 140: ...Type the IP address of your device the web page that you do not want to have blocked with the prefix http For example http 192 168 1 1 4 Click Add to move the IP address to the list of Allowed sites...

Страница 141: ...er check that JavaScripts are allowed 1 In Internet Explorer click Tools Internet Options and then the Security tab Figure 91 Internet Options 2 Click the Custom Level button 3 Scroll down to Scriptin...

Страница 142: ...2 1 3 Java Permissions 1 From Internet Explorer click Tools Internet Options and then the Security tab 2 Click the Custom Level button 3 Scroll down to Microsoft VM 4 Under Java permissions make sure...

Страница 143: ...User s Guide 143 21 2 1 3 1 JAVA Sun 1 From Internet Explorer click Tools Internet Options and then the Advanced tab 2 make sure that Use Java 2 for applet under Java Sun is selected 3 Click OK to cl...

Страница 144: ...Chapter 21 Troubleshooting ES 1528 User s Guide 144...

Страница 145: ...145 PART IV Appendices and Index This part contains the following chapters Product Specifications 147 IP Addresses and Subnetting 151 Legal Information 159 Customer Support 163 Index 167...

Страница 146: ...146...

Страница 147: ...e helps prevent broadcast multicast or unknown unicast traffic from flooding your network Port Mirroring Port mirroring allows you to copy traffic going from one or all ports to another or all ports i...

Страница 148: ...SFP fiber ports Two 10 100 1000 Base Tx ports Auto negotiation Auto MDIX Compliant with IEEE 802 3ad u x Back pressure flow control for half duplex Flow control for full duplex IEEE 802 3x Layer 2 Fea...

Страница 149: ...supported MIB RFC1213 MIB II System RFC1213 MIB II Interface RFC 1398 MIB Ether like RFC2819 Four groups of RMON history statistics alarms and events Table 73 Physical and Environmental Specification...

Страница 150: ...Appendix A Product Specifications ES 1528 User s Guide 150...

Страница 151: ...re a common street name the hosts on a network share a common network number Similarly as each house has its own house number each host on the network has its own unique identifying number the host ID...

Страница 152: ...P address is part of the host ID The following example shows a subnet mask identifying the network number in bold text and host ID of an IP address 192 168 1 2 in decimal By convention subnet masks al...

Страница 153: ...by a continuous number of zeros for the remainder of the 32 bit mask you can simply specify the number of ones instead of writing the value of each octet This is usually specified by writing a follow...

Страница 154: ...ws the company network before subnetting Figure 96 Subnetting Example Before Subnetting You can borrow one of the host ID bits to divide the network 192 168 1 0 into two separate sub networks The subn...

Страница 155: ...1 254 Example Four Subnets The previous example illustrated using a 25 bit subnet mask to divide a 24 bit address into two subnets Similarly to divide a 24 bit address into four subnets you need to bo...

Страница 156: ...et 3 IP SUBNET MASK NETWORK NUMBER LAST OCTET BIT VALUE IP Address 192 168 1 128 IP Address Binary 11000000 10101000 00000001 10000000 Subnet Mask Binary 11111111 11111111 11111111 11000000 Subnet Add...

Страница 157: ...ITS SUBNET MASK NO SUBNETS NO HOSTS PER SUBNET 1 255 255 255 128 25 2 126 2 255 255 255 192 26 4 62 3 255 255 255 224 27 8 30 4 255 255 255 240 28 16 14 5 255 255 255 248 29 32 6 6 255 255 255 252 30...

Страница 158: ...You don t need to change the subnet mask computed by the switch unless you are instructed to do otherwise Private IP Addresses Every machine on the Internet must have a unique address If your network...

Страница 159: ...tware described herein Neither does it convey any license under its patent rights nor the patent rights of others ZyXEL further reserves the right to make changes in any products described herein with...

Страница 160: ...xpressly approved by the party responsible for compliance could void the user s authority to operate the equipment This Class A digital apparatus complies with Canadian ICES 003 Cet appareil num rique...

Страница 161: ...rect or consequential damages of any kind to the purchaser To obtain the services of this warranty contact ZyXEL s Service Center for your Return Material Authorization number RMA Products must be ret...

Страница 162: ...Appendix C Legal Information ES 1528 User s Guide 162...

Страница 163: ...2439 Web Site www zyxel com www europe zyxel com FTP Site ftp zyxel com ftp europe zyxel com Regular Mail ZyXEL Communications Corp 6 Innovation Road II Science Park Hsinchu 300 Taiwan Costa Rica Supp...

Страница 164: ...Finland France E mail info zyxel fr Telephone 33 4 72 52 97 97 Fax 33 4 72 52 19 20 Web Site www zyxel fr Regular Mail ZyXEL France 1 rue des Vergers Bat 1 C 69760 Limonest France Germany Support E m...

Страница 165: ...U S A Norway Support E mail support zyxel no Sales E mail sales zyxel no Telephone 47 22 80 61 80 Fax 47 22 80 61 81 Web Site www zyxel no Regular Mail ZyXEL Communications A S Nils Hansens vei 13 066...

Страница 166: ...support ua zyxel com Sales E mail sales ua zyxel com Telephone 380 44 247 69 78 Fax 380 44 494 49 32 Web Site www ua zyxel com Regular Mail ZyXEL Ukraine 13 Pimonenko Str Kiev 04050 Ukraine United Kin...

Страница 167: ...e 51 bandwidth control 148 bridging 148 browser configuration 137 C cable diagnostics 87 types of faults 87 categories of events 100 certifications 159 notices 160 viewing 160 CFI Canonical Format Ind...

Страница 168: ...ayer 2 features 148 LEDs 38 link aggregation 67 lockout 47 login 43 password 47 logs 97 adding external syslog 99 categories 100 configuration 98 external 97 Flash 97 overview 97 RAM 97 searching 100...

Страница 169: ...set button 35 47 default configuration 37 resetting 47 restart 53 restoring configuration 47 51 RMON alarm group 126 event group 128 history group 122 statistics group 119 RMON Lite 119 Round Robin Sc...

Страница 170: ...67 trunking 28 67 148 configuration 68 distribution criterion 67 Type of Service ToS 75 V ventilation holes 32 VID 63 number of possible VIDs 63 priority frame 63 VID VLAN Identifier 63 viewing MAC en...

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Содержание ES-1528 - V1.12

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ZyXEL Communications ES-1528 - V1.12, Руководство пользователя, Страница: 140 / 170

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Содержание ES-1528 - V1.12

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