EPTis gigabit ethernet significantly faster? - Page 3
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HellGreen
Denmark1146 Posts
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Pumplekin
United Kingdom50 Posts
In answer to the original question. > Is Gigabit Ethernet Significantly Faster ? Well, first, faster than what ?. Faster than FastEthernet. Sure. FastEthernet is 100Mbit/s, Gigabit Ethernet is 1000Mbit/s. In terms of bandwidth, GigabitEthernet is 10 times faster. In terms of latency, GigabitEthernet is also faster. The serialization delay of GigabitEthernet is notably lower, as the transmission speeds are faster. Serialization delay isn't the only factor on latency though, (in fact, it is rarely a significant factor) but it is a factor. Although almost negligable when dealing with 100Mbit/s or 1000Mbit/s speeds. For example, FastEthernet, transmitting a 1518 byte frame, will take (1518 * 8)/104857600 seconds due to serialization delay, ie: around 0.1ms. GigabitEthernet is about 10 times faster in terms of serialization delay, ie. around 0.001ms. Another factor that will matter a LOT for latency, is the forwarding method used by your ethernet switch. Most consumer grade kit, and in fact, most corporate/enterprise/SP kit, will use the Store And Forward switching method. This means you need to send the entire frame to your switch, it puts it into a buffer, and only once the whole frame has arrived will it be played out to the receiving device. An alternative is Cut Through Switching. With this, your frame can be played out the destination port by the switch once the destination MAC address has been seen by the switch (which is in the first few bytes of the ethernet header). | ||
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R1CH
Netherlands10341 Posts
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