Timeline for Store and forward latency
Current License: CC BY-SA 3.0
13 events
| when toggle format | what | by | license | comment | |
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| Aug 7, 2017 at 21:36 | comment | added | Ron Maupin♦ | Did any answer help you? if so, you should accept the answer so that the question doesn't keep popping up forever, looking for an answer. Alternatively, you could provide and accept your own answer. | |
| Jun 29, 2016 at 22:20 | history | bumped | CommunityBot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
| May 30, 2016 at 21:42 | history | bumped | CommunityBot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
| Apr 2, 2016 at 10:53 | comment | added | kll | Wirespeed means the device can switch/route packets at the same rate that you can send over the medium. A device will naturally add a certain delay. It would be ludicrous to believe you could have the same delay as in a cable of the same length. Even with cut-through switching you need to wait for (preamble n stuff) + 6 bytes so you get the dst mac and then you need to do a lookup before you can send. While some would consider this negligible, it is measurably more than what a cable of similar length would introduce, on the order of single or tens of microseconds. | |
| Mar 31, 2016 at 20:37 | answer | added | Ricky | timeline score: 1 | |
| Mar 31, 2016 at 19:35 | comment | added | user3523954 | Aha ... So 2 x S/1Gbit + epsilon?! And epsilon depends on S as well?! | |
| Mar 31, 2016 at 19:29 | comment | added | Ron Maupin♦ | Nominally, wire speed means no delay, or the same delay as experienced by a wire of the same length. Since the switch doesn't use ethernet internally, it may be transferred faster from one switch port to another switch port than it could be on a point-to-point ethernet cable, with a net result of no apparent delay. | |
| Mar 31, 2016 at 19:25 | comment | added | user3523954 | Assuming wire speed it sounds like a total delay of 3 x S/1Gb ... Correct?! | |
| Mar 31, 2016 at 14:59 | comment | added | Ron Maupin♦ | It depends on the switch model. Many switches will do wire-speed switching. Most of the switching today is done in hardware (very fast ASICs). You will need to be specific on the switch model. | |
| Mar 31, 2016 at 11:28 | history | edited | user3523954 | CC BY-SA 3.0 |
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| Mar 31, 2016 at 9:57 | history | edited | Teun Vink | CC BY-SA 3.0 |
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| Mar 31, 2016 at 9:24 | history | edited | user3523954 | CC BY-SA 3.0 |
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| Mar 31, 2016 at 9:15 | history | asked | user3523954 | CC BY-SA 3.0 |