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4-4. Maintenance.................................................................................................................94

4-4-1. Warm Restart........................................................................................................95
4-4-2. Factory Default .....................................................................................................96
4-4-3. Software Upgrade.................................................................................................97
4-4-4. Configuration File Transfer ...................................................................................98
4-4-5. Logout...................................................................................................................99

5. Maintenace .......................................................................................................................100

5-1. Resolving No Link Condition......................................................................................100
5-2. Q&A............................................................................................................................100

Appendix A Technical Specifications.....................................................................................101

Appendix B MIB Specifications..............................................................................................105

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Summary of Contents for LGB2002A-R2

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Page 3: ...24 Port GbE Web Smart Switch User s Manual Release 1 04...

Page 4: ...Basic Concept and Management 23 3 1 What s the Ethernet 23 3 2 Media Access Control MAC 26 3 3 Flow Control 32 3 4 How does a switch work 35 3 5 Virtual LAN 39 3 6 Link Aggregation 45 4 Operation of W...

Page 5: ...4 4 2 Factory Default 96 4 4 3 Software Upgrade 97 4 4 4 Configuration File Transfer 98 4 4 5 Logout 99 5 Maintenace 100 5 1 Resolving No Link Condition 100 5 2 Q A 100 Appendix A Technical Specifica...

Page 6: ...iv Revision History Release Date Revision 1 00 02 10 2007 A1 1 01 03 13 2007 A1 1 02 06 23 2007 A2 1 03 07 13 2007 A2 1 04 09 04 2007 A3...

Page 7: ...Statement This equipment has been tested and found to comply with the limits for a class A computing device pursuant to Subpart J of part 15 of FCC Rules which are designed to provide reasonable prote...

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Page 9: ...tch This guide also covers management options and detailed explanation about hardware and software functions Overview of this user s manual Chapter 1 Introduction describes the features of 24 Gigabit...

Page 10: ...ulti Mode SFP Fiber transceiver 1000Mbps LC 10km SFP Fiber transceiver 1000Mbps LC 30km SFP Fiber transceiver 1000Mbps LC 50km SFP Fiber transceiver 1000Mbps BiDi SC 20km 1550nm SFP Fiber WDM transcei...

Page 11: ...ur network Hardware 20 10 100 1000Mbps Auto negotiation Gigabit Ethernet TP ports 4 10 100 1000Mbps TP or 1000Mbps SFP Fiber dual media auto sense 400KB on chip frame buffer Jumbo frame support Progra...

Page 12: ...Supports to send the trap event while monitored events happened Supports default configuration which can be restored to overwrite the current configuration which is working on via Web UI and Reset but...

Page 13: ...nt panel of the switch LED display area locating on the left side of the panel contains a Power LED which indicates the power status and 24 ports working status of the switch Fig 1 1 Full View of 24 P...

Page 14: ...affic is present 10 100 1000Mbps Green Amber Lit Green when TP link on 1000Mbps speed Lit Amber when TP link on 100Mbps speed Off when 10Mbps or no link occur Blinks when any traffic is present 1000SX...

Page 15: ...0LC 202 1000Mbps LC SM 10km SFP Fiber transceiver SFP 0LC 212 10 1000Mbps LC SM 30km SFP Fiber transceiver SFP 0LC 212 30 1000Mbps LC SM 50km SFP Fiber transceiver SFP 0LC 212 50 1000Mbps LC SM 70km S...

Page 16: ...he power cord to power source Installing Optional SFP Fiber Transceivers to the 24 Port GbE Web Smart Switch Note If you have no modules please skip this section Connecting the SFP Module to the Chass...

Page 17: ...Now you can start having the switch in operation Power On The switch supports 100 240 VAC 50 60 Hz power supply The power supply will automatically convert the local AC power source to DC power It do...

Page 18: ...X From the viewpoint of connector type there mainly are LC and BIDI SC Gigabit Fiber with multi mode LC SFP module Gigabit Fiber with single mode LC SFP module Gigabit Fiber with BiDi SC 1310nm SFP mo...

Page 19: ...ber Cable 1 0 m Fiber Cable 10 10 m TP to fiber Converter 56 Bit Time unit 1ns 1sec 1000 Mega bit Bit Time unit 0 01 s 1sec 100 Mega bit Table 2 2 Sum up all elements bit time delay and the overall bi...

Page 20: ...you are using The switch supports both port based VLAN and tag based VLAN They are different in practical deployment especially in physical location The following diagram shows how it works and what t...

Page 21: ...d not access VLAN1 and VLAN3 members but they could access VLAN4 members 3 VLAN3 members could not access VLAN1 VLAN2 and VLAN4 4 VLAN4 members could not access VLAN1 and VLAN3 members but they could...

Page 22: ...E Web Smart Switch In the way of web user is allowed to startup the switch management function Users can use any one of them to monitor and configure the switch You can touch them through the followin...

Page 23: ...he following steps 1 Set up a physical path between the configured the switch and a PC by a qualified UTP Cat 5 cable with RJ 45 connector Note If PC directly connects to the switch you have to setup...

Page 24: ...l because it is split into predefined address classes or categories Each class has its own network range between the network identifier and host identifier in the 32 bits address Each IP address compr...

Page 25: ...0 is reserved for default route and 127 0 0 0 8 is reserved for loopback function 0 Class B IP address range between 128 0 0 0 and 191 255 255 255 Each class B network has a 16 bit network prefix foll...

Page 26: ...class B network 128 1 2 3 it may have a subnet mask 255 255 0 0 in default in which the first two bytes is with all 1s This means more than 60 thousands of nodes in flat IP address will be at the same...

Page 27: ...25 128 126 24 256 254 23 512 510 22 1024 1022 21 2048 2046 20 4096 4094 19 8192 8190 18 16384 16382 17 32768 32766 16 65536 65534 Table 2 3 According to the scheme above a subnet mask 255 255 255 0 w...

Page 28: ...the designated IP address known as default router Basically it is a routing policy For assigning an IP address to the switch you just have to check what the IP address of the network will be connected...

Page 29: ...ication of the switch please refer to Appendix A The switch is suitable for the following applications Central Site Remote site application is used in carrier or ISP See Fig 2 10 Peer to peer applicat...

Page 30: ...User Manual Publication date September 2007 Revision A3 22 Fig 2 12 Office Network Connection Fig 2 11 Peer to peer Network Connection...

Page 31: ...rface In 1998 Gigabit Ethernet was rolled out and provided 1000Mbps Now 10G s Ethernet is under approving Although these Ethernet have different speed they still use the same basic functions So they a...

Page 32: ...logical link control or bridge relay entity Logical link control supports the interface between the Ethernet MAC and upper layers in the protocol stack usually Network layer which is nothing to do wi...

Page 33: ...ted by C R bit command or response The DSAP and SSAP pair with some reserved values indicates some well known services listed in the table below 0xAAAA SNAP 0xE0E0 Novell IPX 0xF0F0 NetBios 0xFEFE IOS...

Page 34: ...defined to be a 48 bit long and locally unique address Since this type of address is applied only to the Ethernet LAN media access control MAC they are referred to as MAC addresses The first three byt...

Page 35: ...all bit of DA is 1s it is a broadcast which means all network device except the sender itself can receive the frame and response Ethernet Frame Format There are two major forms of Ethernet frame type...

Page 36: ...ation 802 3 802 2 encapsulation and Netware 802 3 RAW encapsulation Each of them has different fields following the Length field If the Length Type value is greater than 1500 it means the Length Type...

Page 37: ...eld in turn The followings summarize what a MAC does before transmitting a frame 1 MAC will assemble the frame First the preamble and Start of Frame delimiter will be put in the fields of PRE and SFD...

Page 38: ...pagation time between the two most distant devices This maximum time is traded off by the collision recovery time and the diameter of the LAN In the original 802 3 specification Ethernet operates in h...

Page 39: ...full duplex operation mode both transmitting and receiving frames are processed simultaneously This doubles the total bandwidth Full duplex is much easier than half duplex because it does not involve...

Page 40: ...d if there is no carrier signal on the medium at that time the device will wait for a period of time known as an inter frame gap time to have the medium clear and stabilized as well as to have the job...

Page 41: ...a collision happened somewhere or an interface malfunctioned in the LAN When detecting the case the MAC drops the packet and goes back to the ready state 2 If the DA of the received frame exactly matc...

Page 42: ...and finds a reserved special value 0x8100 at the location of the Length Type field of the normal non VLAN frame it will interpret the received frame as a tagged VLAN frame If this happens in a switch...

Page 43: ...utilizes CSMA CD to arbitrate who can transmit data to the station s attached in the LAN When more than one station transmits data within the same slot time the signals will collide referred to as col...

Page 44: ...es And what s more when operating in full duplex mode the distance can reach farther than half duplex because it is not limited by the maximum propagation delay time 512 bits time If fiber media is ap...

Page 45: ...forwarded If DA does not exist have the packet broadcasted Due to the size of the MAC address limited MAC address aging function is applied When the MAC address has resided and keeps no update in the...

Page 46: ...plement and different chips may support different schedule algorithms Most common schedulers are FCFS First Come First Service Strictly Priority All High before Low Weighted Round Robin Set a weight f...

Page 47: ...station outside the LAN a router is needed which always lies on the edge of the LAN For a layer 2 VLAN it assumes it is a logical subset of a physical LAN separated by specific rules such as tag port...

Page 48: ...others This helps us configure the network easily according to the criteria needed for example financial accounting R D and whatever you think it necessary You can also easily move a user to a differ...

Page 49: ...gged Frame A frame carrying a tag field following the source MAC address is four bytes long and contains VLAN protocol ID and tag control information composed of user priority Canonical Format Indicat...

Page 50: ...tag field The frame with VID assigned by a port is called PVID Each port can only be assigned a PVID The default value for PVID is 1 the same as VID Ingress filtering The process to check a received p...

Page 51: ...transmitted with the priority accordingly If enabled an egress port will transmit out a tagged packet if the port is connected to a 802 1Q compliant device If an egress port is connected to a non 802...

Page 52: ...ingress filtering is disabled VLAN bridge will only check the MAC address table to see if the destination VLAN exists If VLAN does not exist then drop the packet and if both DA and VLAN do not exist f...

Page 53: ...cost beyond your budget and the solution caused by the limitation of hardware performance may not be scalable If the item 2 is the case now you do not have to pay much more extra cost and can keep fle...

Page 54: ...witch to switch switch to station and station to station Here station may be a host or a router Link Aggregation called port trunking sometimes has two types of link configuration including static por...

Page 55: ...in the table below IP Address 192 168 1 1 Subnet Mask 255 255 255 0 Default Gateway 192 168 1 254 Password admin Table 4 1 When the configuration of your Web Smart Switch is finished you can browse it...

Page 56: ...e lists default values and shows you the basic information of the switch including Switch Status TP Port Status Fiber Port Status Aggregation VLAN Mirror SNMP and Maximum Packet Length With this infor...

Page 57: ...les would depend on the ones you insert Vice versa if ports are disconnected they will show just in black On the left side the main menu tree for web is listed in the page According to the function na...

Page 58: ...onfiguration VLAN Mode Configuration VLAN Group Configuration Aggregation LACP RSTP 802 1X IGMP Snooping Mirror QoS Filter Rate Limit Storm Control and SNMP System Configuration Ports Configuration VL...

Page 59: ...ware version MAC address serial number active IP address active subnet mask active gateway DHCP server and Lease time left Set device name DHCP enable fallback IP address fallback subnet mask fallback...

Page 60: ...ss Users can configure the IP settings and fill in new values Then click Apply button to update Default 192 168 1 1 Fallback Subnet Mask Subnet mask is made for the purpose to get more network address...

Page 61: ...et the criteria for other pre defined path it must be forwarded to a default router on a default path This means any packet with undefined IP address in the routing table will be sent to this device u...

Page 62: ...Auto Speed 1000 Full and Disable If the media is TP the Speed Duplex is comprised of the combination of speed mode 10 100 1000Mbps and duplex mode full duplex and half duplex The following table summ...

Page 63: ...udes four modes Port based Tag based Metro mode or Disable you can choose one of them by pulling down list and pressing the Downward arrow key Then click Apply button the settings will take affect imm...

Page 64: ...see the section VLAN in Chapter 3 Each tag based VLAN you built up must be assigned VLAN name and VLAN ID Valid VLAN ID is 1 4094 User can create total up to 24 Tag VLAN groups Double tag Double tag m...

Page 65: ...d VLAN separately When you choose one of VLAN mode the switch will bring you the responded VLAN configuration which keeps the default data You can easily create and delete a VLAN group by pressing Add...

Page 66: ...8 Add Group Create a new port based VLAN or tag based VLAN which depends on the VLAN mode you choose in VLAN mode function Fig 4 8 Add or Remove VLAN Member Delete Group Just tick the check box beside...

Page 67: ...User Manual Publication date September 2007 Revision A3 59 Fig 4 9 Port Based VLAN Configuration...

Page 68: ...ample if three Fast Ethernet ports are aggregated into a logical port then this logical port s bandwidth would be as three times high as a single Fast Ethernet port s Function name Aggregation Configu...

Page 69: ...establish trunk groups LACP also allows port redundancy that is if an operational port fails then one of the standby ports become operational without user intervention Function name LACP Port Configur...

Page 70: ...esignated port The switch with the highest priority lowest numeric value becomes the STP root switch If all switches have the same priority the switch with the lowest MAC address will then become the...

Page 71: ...tick the check box beside the port x to enable RSTP protocol then press the Apply button to apply Edge Just tick the check box beside the port x to enable edge function Path Cost Path cost is the cos...

Page 72: ...t Access Entity by exchanging the authentication message when the Authenticator PAE request to it Authenticator An entity facilitates the authentication of the supplicant entity It controls the state...

Page 73: ...rver B and C is in the internal network D is Authentication server running RADIUS switch at the central location acts Authenticator connecting to PC A and A is a PC outside the controlled port running...

Page 74: ...est the authentication server sends Radius Access Challenge to the supplicant for asking for inputting user password via the authenticator PAE 7 The supplicant will convert user password into the cred...

Page 75: ...ol function supported by the switch is little bit complex for it just support basic Enabled mode which can distinguish the device s MAC address and its VID The following table is the summary of the co...

Page 76: ...ing may contain upper case lower case and 0 9 It is character sense It is not allowed for putting a blank between any two characters Default None Admin State This is used to set the operation mode of...

Page 77: ...nected to the port Force Reinitialize All Force Reinitialize for all ports in at once continue Fig 4 16 802 1X Configuration Statistics Choose the port which you want to show of 802 1X statistics the...

Page 78: ...d password to stay connected to the port Parameter description Reauthentication Enabled Choose whether regular authentication will take place in this port Default disable Reauthentication Period 1 655...

Page 79: ...e this function Default disable Router Ports Just tick the check box beside the port x to enable router ports then press the Apply button to start up Default none Unregistered IGMP Flooding enabled Ju...

Page 80: ...ror multi ports For example we assume that Port A and Port B are Source Ports and Port C is Mirror Port respectively thus the traffic passing through Port A and Port B will be copied to Port C for mon...

Page 81: ...Services Code Point on Layer 3 of network framework Fig 4 21 QoS Configuration Function name QoS Configuration Function description While setting QoS function please select QoS Mode in drop down menu...

Page 82: ...ty and All High Priority The QoS setting would apply to all ports on the switch if one of the following values is selected All Low Priority All Normal Priority All Medium Priority or All High Priority...

Page 83: ...wed to set up these 64 kinds of Class that belong to any of queue low normal medium high Parameter description Prioritize Traffic Five Prioritize Traffic values are provided Custom All Low Priority Al...

Page 84: ...ypes of mode in this drop down menu Default is disabled Disabled Allow all IP Address login to this switch and manage it Static Just allow the IP Address which set by administrator to login to this sw...

Page 85: ...User Manual Publication date September 2007 Revision A3 77 Fig 4 24 Filter Configuration...

Page 86: ...value you set up in Data Rate field Pause frames are also generated if flow control is enabled The format of the packet limits to unicast broadcast and multicast Valid value of Port 1 24 ranges from 1...

Page 87: ...4 26 Storm Control Configuration Parameter description ICMP Rate To enable the ICMP Storm capability User can use drop down menu to select number of frames Default is No Limit The setting range is 1k...

Page 88: ...er of frames Default is No Limit The setting range is 1k 1024k per second Flooded unicast Rate To enable the Flooded unicast Storm capability User can use drop down menu to select number of frames Def...

Page 89: ...ty name trap host and public traps as well as the throttle of SNMP A SNMP manager must pass the authentication by identifying both community names then it can access the MIB information of the target...

Page 90: ...ser Manual Publication date September 2007 Revision A3 82 Default community name for Get public Default community name for Set private Default community name for Trap public Fig 4 27 SNMP Configuratio...

Page 91: ...n show all ports counter information at the same time If the counting is overflow the counter will be reset and restart counting Function name Statistics Overview Function description Display the summ...

Page 92: ...lication date September 2007 Revision A3 84 The counting number of the packet received Tx Errors Number of bad packets transmitted Rx Errors Number of bad packets received Fig 4 28 Statistics Overview...

Page 93: ...Packets Number of Rx packets classified as low priority Rx Broadcast Show the counting number of the received broadcast packet Rx Multicast Show the counting number of the received multicast packet R...

Page 94: ...n good and bad packets received Rx 512 1023 Bytes Number of 512 1023 byte frames in good and bad packets received Rx 1024 Bytes Number of 1024 max_length byte frames in good and bad packets received T...

Page 95: ...ith invalid CRC Rx Jabber Number of long frames according tomax_length register with invalid CRC Rx Drops Frames dropped due to the lack of receiving buffer Tx Collisions Number of collisions transmit...

Page 96: ...rates that LACP Status window can show LACP information and status for all ports in the same time Parameter description LACP Aggregation Overview Show the group port status Default will set to red sig...

Page 97: ...stands for the MAC address of this switch Hello Time Show the current hello time of the root bridge Hello time is a time interval specified by root bridge used to request all other bridges periodical...

Page 98: ...User Manual Publication date September 2007 Revision A3 90 Fig 4 31 RSTP Status...

Page 99: ...the query for each group to which it belongs It Calculate the number of times of IGMPV1 report V2 Reports When a host receives a group membership query it identifies the groups associated with the que...

Page 100: ...n Parameter description Ping Parameters Target IP address Set up a Target IP address to ping Count Use drop down menu to set number of echo requests to send Four type of number can choose there are 1...

Page 101: ...P address Show the active target IP address Status Show the result of the ping status Received replies Show the received replies number of times Request timeouts Show the timeout of request Average Re...

Page 102: ...lication date September 2007 Revision A3 94 4 4 Maintenance There are five functions contained in the maintenance function Warm Restart Factory Default Maintenance Software Upgrade Configuration File...

Page 103: ...e and to retrieve default settings After upgrading software you have to reboot the device to have new configuration take effect The function being discussed here is software reset Function name Warm R...

Page 104: ...ent configuration Except the IP address setting all settings will be restored to the factory default values when Factory Default function is performed If you want to restore all configurations includi...

Page 105: ...eptember 2007 Revision A3 97 4 4 3 Software Upgrade Function name Software Upgrade Function description You can just click Browse button to retrieve the file you want in your system to upgrade your sw...

Page 106: ...e Configuration File Transfer Function description You can backup your switch s configuration file into your computer folder in case accident happens In addition uploading backup configuration file in...

Page 107: ...the permission If you do not logout and exit the browser the switch will automatically have you logout Besides this manually logout and implicit logout you can set up the parameter of Auto Logout Time...

Page 108: ...rk configuration on Computer C 2 The uplink connection function fails to work 9 The connection ports on another must be connection ports Please check if connection ports are used on that 24 Port GbE W...

Page 109: ...ny ports can be in disable mode force mode or auto polling mode Supports Head of Line HOL blocking prevention Supports broadcast storm filtering Web based management provides the ability to completely...

Page 110: ...LC or BiDi SC transceiver Transmission Mode 10 100Mbps support full or half duplex 1000Mbps support full duplex only Transmission Speed 10 100 1000Mbps for TP 1000Mbps for Fiber Full Forwarding Filter...

Page 111: ...100 1000M TP Port 1 to 24 LINK ACT 10 100 1000Mbps 1000M SFP Fiber Port 21 22 23 24 SFP LINK ACT Power Requirement AC Line Voltage 100 240 V Frequency 50 60 Hz Consumption 20W Ambient Temperature 0 t...

Page 112: ...disable any port set VLAN group set Trunk Connection VLAN Function Port Base 802 1Q Tagged allowed up to 24 active VLANs in one switch Trunk Function Ports trunk connections allowed Bandwidth Control...

Page 113: ...T IDENTIFIER switch 7 GESM SW24LProduces OBJECT IDENTIFIER GESM SW24LProductId 1 GESM SW24LIllegalLogin TRAP TYPE ENTERPRISE GESM SW24LProductId DESCRIPTION Send this trap when the illegal user try to...

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