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23 

Store-and-Forward 

Store-and-Forward is one type of packet-forwarding 
techniques. A Store-and-Forward Ethernet Switch stores the 
incoming frame in an internal buffer, do the complete error 
checking before transmission. Therefore, no error packets 
occurrence, it is the best choice when a network needs 
efficiency and stability. 

The Switch scans the destination address from the packet 
header, searches the routing table provided for the incomi ng 
port and forwards the packet, only if required. The fast 
forwarding makes the switch attractive for connecting servers 
directly to the network, thereby increasing throughput and 
availability. However, the switch is most commonly used to 
segment existing hubs, which nearly always improves overall 
performance. A Ethernet Switch can be easily configured in 
any Ethernet network environment to significantly boost 
bandwidth using conventional cabling and adapters. 

Due to the learning function of the Ethernet switch, the source 
address and corresponding port number of each incoming 
and outgoing packet are stored in a routing table. This 
information is subsequently used to filter packets whose 
destination address is on the same segment as the source 
address. This confines network traffic to its respective domain, 
reducing the overall load on the network. 

The Switch performs "Store-and-forward" therefore, no error 
packets occur. More reliably, it reduces the re-transmission 
rate. No packet loss will occur. 

Auto-Negotiation 

The STP ports on the Switch have built-in "Auto-Negotiation." 
This technology automatically sets the best possible 
bandwidth when a connection is established with another 
network device (usually at Power On or Reset). This is done 
by detect the mo des and speeds at the second of both device 
is connected and capable of. Both 10Base-T and 

Содержание FSD-503

Страница 1: ...SOHOConnect Series SW 500 SW 800 FSD 503 FSD 803 5 8 port 10 100Mbps Fast Ethernet Switch...

Страница 2: ...cations Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense CE Mark Warning...

Страница 3: ...Identifying External Components 11 Front Panel 11 Rear Panel 12 LED Indicators 13 Chapter 4 Connecting The Switch 15 PC to Switch 15 Hubto Switch 15 Hub without Uplink MDI II port 16 Switch to Switche...

Страница 4: ...nual discusses how to install your SW 500 SW 800 FSD 503 FSD 803 5 8 port 10 100Mbps Fast Ethernet Switch Terms Usage In this guide the term Switch first letter upper case refers to your 5 8 port 10 1...

Страница 5: ...panel and LED indicators of the Switch Chapter 4 Connecting The Switch Tells how you can connect the Switch to your Ethernet network Appendix A Technical Specifications Lists the technical general phy...

Страница 6: ...ance Fast Ethernet solutions in the years to come 100Mbps Fast Ethernet is a new standard specified by the IEEE 802 3 LAN committee It is an extension of the 10Mbps Ethernet standard with the ability...

Страница 7: ...rk beyond the 205 meter network diameter limit for 100BASE TX networks Switches supporting both traditional 10Mbps Ethernet and 100Mbps Fast Ethernet are also ideal for bridging between the existing 1...

Страница 8: ...ade to Fast Ethernet in the future Ethernet workgroups can connect to the Switches now and change adapters and hubs anytime later without needing to change the Switches or reconfigure the network The...

Страница 9: ...s while the port s receiving buffer is full Note that flow control is only available in half duplex mode Data forwarding rate per port is at wire speed for 100Mbps speed Data forwarding rate per port...

Страница 10: ...ged please contact your local reseller for replacement Setup The setup of the Switch can be performed using the following steps The surface must support at least 1 5 Kg for the Switch The power outlet...

Страница 11: ...b Both the front and rear panels are shown followed by a description of each panel feature The indicator panel is described in detail in the next chapter Front Panel The figure below shows the front p...

Страница 12: ...wer adapter Check the technical specification section for information about the AC power input voltage Since the switch does not include a power switch plugging its power adapter into a power outlet w...

Страница 13: ...cable making a crossover cable unnecessary Note 1 The Hub is a power required device it means the Hub will not work until it is powered If your networked PCs will need to transmit data all the time p...

Страница 14: ...connected It remains OFF if an Ethernet station is connected FDX COL This LED indicator light amber when a respective port is in full duplex FDX mode Otherwise it is OFF for half duplex HDX operation...

Страница 15: ...nections The following are LED indicator possibilities for a PC to Switch connection 1 The LINK ACT Speed LED indicator light green for hookup to 100Mbps speed LINK ACT light green while Speed LED off...

Страница 16: ...II port If a hub is not equipped with an Uplink MDI II port connection can be made using either straight cable or crossover cable A Using straight cable When using straight cable the connection can b...

Страница 17: ...ch A to any of the 10Mbps 100Mbps MDI X port of the other switch switch B or other devices 1 The LINK ACT 100 Speed LED indicators light green for hookup to 100Mbps speed or only LINK ACT light green...

Страница 18: ...Topology Star Network Cables 10BASET 2 pair UTP Cat 3 4 5 100 m EIA TIA 568 100 ohm STP 100 m 100BASE TX 2 pair UTP Cat 5 100 m EIA TIA 568 100 ohm STP 100 m Number of Ports 5 8 x 10 100Mbps ports Up...

Страница 19: ...nsmit Method Store and forward RAM Buffer 128K bytes Filtering Address Table Up to 1K entries per device Packet Filtering Forwarding Rate 10Mbps Ethernet 14 880 pps 100Mbps Fast Ethernet 148 800 pps M...

Страница 20: ...bles show the standard RJ 45 receptacle connector and their pin assignments for the switch to network adapter card connection and the straight crossover cable for the Switch to switch hub bridge conne...

Страница 21: ...ight cable and crossover cable connection Straight cable for Switch Uplink MDI II port to switch Hub or other devices connection Crossover cable for Switch MDI X port to switch hub or other network de...

Страница 22: ...t comes from some port of the Ethernet Switch it will also check the destination address besides the source address learning The Ethernet Switch will lookup the address table for the destination addre...

Страница 23: ...any Ethernet network environment to significantly boost bandwidth using conventional cabling and adapters Due to the learning function of the Ethernet switch the source address and corresponding port...

Страница 24: ...Half or Full Duplex mode If attached device is 100Base TX port will set to 10Mbps no auto negotiation 10Mbps 10Mbps with auto negotiation 10 20Mbps 10Base T Full Duplex 100Mbps no auto negotiation 100...

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