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11 

 
Case1: All switch ports are in the same local area network.  Every port can access                 

each other (See Fig. 2-2). 

 

 

 
  
 
If the VLAN is enabled and configured, each node in the network that can 

communicate each other directly is bounded to the same VLAN area.  

 
The VLAN area is defined by which VLAN you are on. 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 the differences are. 

 

Case2a: Port-based VLAN (See Fig.2-3). 
 
 

 

 
 
 
1. The same VLAN members can not be connected to different switches.  
2. Every VLAN member can not access VLAN members from other VLAN 

group.  

3. The network administrator has to assign different names for every VLAN 

group on one switch.   

Fig. 2-2 No VLAN Configuration Diagram

Fig. 2-3 Port-based VLAN Diagram 

Содержание ES-5240G+

Страница 1: ...ES 5240G 24 Port GbE Web Smart Switch User s Manual Version 1 0 June 2007...

Страница 2: ...e contents hereof and specifically disclaims any warranties merchantability or fitness for any particular purpose Any software described in this manual is sold or licensed as is Should the programs pr...

Страница 3: ...cal Applications 20 3 Basic Concept and Management 22 3 1 What s the Ethernet 22 3 2 Media Access Control MAC 25 3 3 Flow Control 31 3 4 How does a switch work 34 3 5 Virtual LAN 38 3 6 Link Aggregati...

Страница 4: ...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...

Страница 5: ...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...

Страница 6: ......

Страница 7: ...iver is used for high speed connected expansion 1000Mbps LC Multi Mode SFP Fiber transceiver 1000Mbps LC 10km SFP Fiber transceiver 1000Mbps LC 30km SFP Fiber transceiver 1000Mbps LC 50km SFP Fiber tr...

Страница 8: ...dia auto sense 400KB on chip frame buffer Jumbo frame support Programmable classifier for QoS Layer 2 Layer 3 8K MAC address and support VLAN ID 1 4094 Per port shaping policing and Broadcast Storm Co...

Страница 9: ...nt configuration which is working on via Web UI and Reset button of the switch Supports hot swap plug unplug SFP modules Supports Quality of Service QoS for real time applications based on the informa...

Страница 10: ...LED display area Locating on the left side of the panel Power LED which indicates the power status and 24 ports working status of the switch Fig 1 1 Full View of 24 PORT GBE WEB SMART SWITCH Fig 1 2...

Страница 11: ...er 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 LX Gigabit Fiber Port 21 22 23 24 LED SFP...

Страница 12: ...w 1000Mbps LC MM SFP Fiber transceiver 1000Mbps LC SM 10km SFP Fiber transceiver 1000Mbps LC SM 30km SFP Fiber transceiver 1000Mbps LC SM 50km SFP Fiber transceiver 1000Mbps LC SM 70km SFP Fiber trans...

Страница 13: ...the 24 Port GbE Web Smart Switch Note If you do not have modules please skip this section Connecting the SFP Module to the Chassis The optional SFP modules are hot swappable so you can plug or unplug...

Страница 14: ...1000 TP device The switch is now in operation Power On The switch supports 100 240 VAC 50 60 Hz power sources The power supply will automatically convert the local AC power source to DC power After th...

Страница 15: ...ector type there are mainly 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 module Gigabit Fiber with BiDi...

Страница 16: ...able 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 the overall bit time delay of wires devic...

Страница 17: ...h 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 the differences are Case2a Port based...

Страница 18: ...N3 members but they can access VLAN4 members 3 VLAN3 members can not access VLAN1 VLAN2 and VLAN4 4 VLAN4 members can not access VLAN1 and VLAN3 members but they can access VLAN2 members Case3a The sa...

Страница 19: ...cess and manage its functions through its web based interface Users can monitor the status of the switch as well as to configure the switch through this web based interface Here we will guide you thro...

Страница 20: ...low 1 Set up a physical path between the configured switch and a PC with a qualified UTP Cat 5 cable with RJ 45 connectors Note If the PC directly connects to the switch you will have to set up same s...

Страница 21: ...t is classified into predefined address classes or categories Each class has its own network range Each IP address comprises two parts network identifier address and host identifier address The former...

Страница 22: ...is reserved for loopback function 0 Class B The IP address range in between 128 0 0 0 and 191 255 255 255 Each class B network has a 16 bit network prefix followed by a 16 bit host address There are 1...

Страница 23: ...have a subnet mask 255 255 0 0 by default in which the first two bytes are with all 1s This means more than 60 thousands of nodes in flat IP address will be at the same network It s too large to mana...

Страница 24: ...8 16 14 27 32 30 26 64 62 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 There will be a maximum of 254 eff...

Страница 25: ...gnated IP address which is known as the default router This is a routing policy For assigning an IP address to the switch you need to check what the IP address of the network will be connected to the...

Страница 26: ...ase refer to Appendix A The switch is suitable for the following applications Central Site Remote Site is used in carrier or ISP applications See Fig 2 10 Peer to peer is used for applications in betw...

Страница 27: ...21 Fig 2 12 Office Network Connection Fig 2 11 Peer to peer Network Connection...

Страница 28: ...d out and provided 1000Mbps Now 10G s Ethernet is under evaluation and may soon to be approved for practices Although these Ethernet standards have different speed same basic functions still apply Sam...

Страница 29: ...cts as the interface between the Ethernet MAC and upper layers in the protocol stack usually Network layer Network layer has nothing to do with the nature of the LAN so it operates over other differen...

Страница 30: ...sponse The DSAP and SSAP pair with certain reserved values indicates some well known services listed in the table below 0xAAAA SNAP 0xE0E0 Novell IPX 0xF0F0 NetBios 0xFEFE IOS network layer PDU 0xFFFF...

Страница 31: ...nd locally unique address Since this type of addresses apply only to the Ethernet LAN media access control MAC they are referred to as MAC addresses The first three bytes are Organizational Unique Ide...

Страница 32: ...ich means all network devices except the sender itself can receive the frame and response Ethernet Frame Format There are two major forms of Ethernet frame type encapsulation and length encapsulation...

Страница 33: ...d 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 acts as Type Different type value...

Страница 34: ...hat 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 followed by DA SA tag ID if tagged VLA...

Страница 35: ...t 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 half duplex only Under this condition when...

Страница 36: ...mitting and receiving frames are processed simultaneously This doubles total effective bandwidth Full duplex is much easier than half duplex because it does not involve media contention collision retr...

Страница 37: ...transmit data out and 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 wel...

Страница 38: ...e ready state 2 The DA of received frame should match the physical address of the receiving MAC or the address of the to be recognized designated multicast If not the frame will be discarded and the M...

Страница 39: ...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 the MAC will forward it acco...

Страница 40: ...rate 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 collision The arbitrator wil...

Страница 41: ...ting 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 applied the distance can be up...

Страница 42: ...t the switch will broadcast the packet Due to the limitation to the size of a MAC address the MAC address aging function is applied When the MAC address has resided and no updates been refreshed in th...

Страница 43: ...s 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 figure to the packet with a...

Страница 44: ...uter 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 MAC address and so on In oth...

Страница 45: ...ure 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 different location or join a new u...

Страница 46: ...ying 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 Indicator CFI and optional VLA...

Страница 47: ...port is called PVID Each port can only be assigned one PVID The default value for PVID is 1 which is the same as VID Ingress filtering This is the process to check a received packet and compare its VI...

Страница 48: ...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 1Q device o...

Страница 49: ...tering is disabled the 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 forward...

Страница 50: ...not be scalable if the unsatisfied performance is caused by hardware limitations If item 2 is the case no extra cost is required and the demand of bandwidth can be flexible because all that needs is t...

Страница 51: ...tion and station to station Here a station may be a host or a router Link Aggregation called port trunking sometimes has two types of link configuration including static port trunk and dynamic port tr...

Страница 52: ...sk 255 255 255 0 Default Gateway 192 168 1 254 Password admin Table 4 1 After the 24 Port GbE Web Smart Switch being finished configuration you can browse it by using the IP address you set up for it...

Страница 53: ...fault page and it displays you with the basic information of the system including Switch Status TP Port Status Fiber Port Status Aggregation VLAN Mirror SNMP and Maximum Packet Length With this inform...

Страница 54: ...ed Again if disconnected the port will show just dark if linked green On the left side the main tree menu of the web user interface is listed According to the function name in boldface all functions c...

Страница 55: ...QoS Filter Rate Limit Storm Control and SNMP are contained in this function folder for system and network management Each of them will be described in detail orderly in the following sections System...

Страница 56: ...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 gateway management VLAN password and...

Страница 57: ...click Apply button to update Default 192 168 1 1 Fallback Subnet Mask Subnet mask is made for the purpose to get more network addresses because any one IP device in a network must own its IP address...

Страница 58: ...e 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 unconditionally Default 192 1...

Страница 59: ...se 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 su...

Страница 60: ...se one of them by pulling down list and pressing the Downward arrow key Then click Apply button the settings will be in effect immediately Parameter description VLAN Mode Port based Port based VLAN is...

Страница 61: ...e assigned with a VLAN name and a VLAN ID Valid VLAN ID is 1 4094 User can create total up to 24 Tag VLAN groups Double tag Double tag mode belongs to the tag based mode however it would treat all fra...

Страница 62: ...of VLAN mode the switch will bring you the responded VLAN configuration which keeps the default data You can easily create or delete a VLAN group by pressing Add or Delete function buttons or click th...

Страница 63: ...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 the ID then press the Delete button to delete...

Страница 64: ...there are three Fast Ethernet ports aggregated in a logical port this logical port will have bandwidth of three times high as a single Fast Ethernet port Function name Aggregation Configuration Funct...

Страница 65: ...ps 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 Configuration Function descr...

Страница 66: ...riority 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 root switch Select a value from the drop dow...

Страница 67: ...t 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 cost of transmitting a frame on to a...

Страница 68: ...or PAE request is sent to it Authenticator An entity facilitates the authentication of the supplicant entity It controls the state of the port authorized or unauthorized according to the result of aut...

Страница 69: ...is a PC outside the controlled port running Supplicant PAE In this case PC A wants to access the services on device B and C first it must exchange the authentication message with the authenticator on...

Страница 70: ...supplicant will convert user password into the credential information perhaps in MD5 format and replies an EAP Response with this credential information as well as the specified authentication algorit...

Страница 71: ...dress and its VID The following table is the summary of the combination of the authentication status and the port status versus the status of port mode set in 802 1x Port mode port control state set i...

Страница 72: ...te This is used to set the operation mode of authorization There are three types of operation mode supported Force Unauthorized Force Authorized and Auto y Force Unauthorized The controlled port is fo...

Страница 73: ...or all ports at once continue Fig 4 16 802 1X Configuration Statistics Choose the port which you want to show of 802 1X statistics the screen include Authenticator counters backend Authenticator count...

Страница 74: ...o the port Parameter description Reauthentication Enabled Choose whether regular authentication will take place in this port Default disable Reauthentication Period 1 65535 s A non zero number seconds...

Страница 75: ...enable 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 enab...

Страница 76: ...le we assume that Port A and Port B are Source Ports and Port C is Mirror Port respectively The traffic passed by Port A and Port B will be copied to Port C for monitoring Parameter description Source...

Страница 77: ...iguration The switch offers powerful QoS function This function supports VLAN tagged priority that can make precedence of 8 priorities and DSCP Differentiated Services Code Point on Layer 3 of network...

Страница 78: ...edium priority or all high priority for QoS default value Function name 802 1p Setting Function description This function will affect the priority of VLAN tag Based on priority of VLAN tag it can arra...

Страница 79: ...and the last two bits are left unused DSCP can form total 64 0 63 kinds of Traffic Class based on the arrangement of 6 bit field in DSCP of the IP packet In the switch the user is allowed to set up t...

Страница 80: ...led Allow users from all IP address to log in to this switch and manage it Static Only the user from the IP Address set by administrator is allowed to login to this switch and manage it DHCP Allow the...

Страница 81: ...75 Fig 4 24 Filter Configuration...

Страница 82: ...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 128 3968 kbps Default No Limit...

Страница 83: ...d to block unnecessary frames of the multicast and broadcast that would have reduced the switch s performance When the frames of multicast or broadcast are over the rate and Strom Control is enabled t...

Страница 84: ...dcast Storm capability The user can use drop down menu to select number of frames Default is No Limit The setting range is 1k 1024k per second Multicast Rate To enable the Multicast Storm capability T...

Страница 85: ...y 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 d...

Страница 86: ...80 Default SNMP function Disable Default community name for Get public Default community name for Set private Default community name for Trap public Fig 4 27 SNMP Configuration...

Страница 87: ...81 4 3 Monitoring There are six functions under in the monitoring function Statistics Overview Detailed Statistics Monitoring LACP Status RSTP Status IGMP Status Ping...

Страница 88: ...he counting will restart Function name Statistics Overview Function description Display the summary counting of each port s traffic including Tx Bytes Tx Frames Rx Bytes Rx Frames Tx Errors and Rx Err...

Страница 89: ...cast Show the counting number of the received broadcast packet Rx Multicast Show the counting number of the received multicast packet Rx Broad and Multicast Show the counting number of the received br...

Страница 90: ...ast Show the counting number of the transmitted broadcast with multicast packet Tx Error Packets Show the counting number of the received error packets Rx 64 Bytes Number of 64 byte frames in good and...

Страница 91: ...ted Tx 128 255 Bytes Number of 127 255 byte frames in good and bad packets transmitted Tx 256 511 Bytes Number of 256 511 byte frames in good and bad packets transmitted Tx 512 1023 Bytes Number of 51...

Страница 92: ...ansmitting frames experienced Tx Drops Number of frames dropped due to excessive collision late collision or frame aging Tx Overflow Number of frames dropped due to the lack of transmitting buffer Fig...

Страница 93: ...rmation and status for each port at one time Parameter description LACP Aggregation Overview Show the group port status Red signs are set by default for link down ports user are recommended to refer t...

Страница 94: ...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 periodically sending hello message every...

Страница 95: ...89 Fig 4 31 RSTP Status...

Страница 96: ...r each group it belongs It calculates the number of times of IGMP V1 report V2 Reports When a host receives a group membership query it identifies the groups associated with the query and determines t...

Страница 97: ...91 Fig 4 32 IGMP Status...

Страница 98: ...to send One of the four numbers can be chosen 1 5 10 and 20 Default 1 Time Out in secs Use drop down menu to set the number of echo requests time out in seconds One of the four numbers can be chosen...

Страница 99: ...93 Fig 4 33 Ping...

Страница 100: ...94 4 4 Maintenance There are five functions under the maintenance section Warm Restart Factory Default Maintenance Software Upgrade Configuration File Transfer Logout...

Страница 101: ...oftware you must reboot to have the new configuration taken effect Here we will be discussing the software reset for the reboot in the main menu Function name Warm Restart Function description Reboot...

Страница 102: ...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 including the IP address setting to...

Страница 103: ...7 4 4 3 Software Upgrade Function name Software Upgrade Function description Browse through your PC for a newer version of software pre saved on your PC and upgrade the switch Fig 4 36 Software Upgrad...

Страница 104: ...o your computer to prevent accidental data lost If a device configuration crash occurs or to configure a new switch this pre saved configuration backup file can be used to quickly restore the switch b...

Страница 105: ...out and exit the browser the switch will automatically have you logged out Besides this manually logout and implicit logout you can set up the parameter of Auto Logout Timer in system configuration fu...

Страница 106: ...ction function fails to work 9 Please make sure that ports on the opposing device are connection ports Please check if connection ports are used on that 24 Port GbE Web Smart Switch 9 Please check the...

Страница 107: ...ode 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 manage the switch from any...

Страница 108: ...ansmission 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 Filtering Packet Rate PPS packets...

Страница 109: ...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 30W Ambient Temperature 0 to 50 C Humidity 5 to 90 Di...

Страница 110: ...roup 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 Supports by port Egress Ing...

Страница 111: ...5240G Produces OBJECT IDENTIFIER ES 5240G ProductId 1 ES 5240G IllegalLogin TRAP TYPE ENTERPRISE ES 5240G ProductId DESCRIPTION Send this trap when the illegal user try to login the Web management UI...

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