cnp3-ebook/protocols/ethernet

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35 ../../protocols/ethernet.rst:174
	English 10 Mb/s over optical fiber
	French 0/260 · 26 Needs editing
36 ../../protocols/ethernet.rst:175
	English 100Base-Tx
	French 0/100 · 10 Needs editing
37 ../../protocols/ethernet.rst:175
	English Category 5 UTP or STP, 100 m maximum
	French 0/360 · 36 Needs editing
38 ../../protocols/ethernet.rst:176
	English 100Base-FX
	French 0/100 · 10 Needs editing
39 ../../protocols/ethernet.rst:176
	English Two multi-mode optical fiber, 2 km maximum
	French 0/420 · 42 Needs editing
40 ../../protocols/ethernet.rst:177
	English 1000Base-CX
	French 0/110 · 11 Needs editing
41 ../../protocols/ethernet.rst:177
	English Two pairs shielded twisted pair, 25m maximum
	French 0/440 · 44 Needs editing
42 ../../protocols/ethernet.rst:178
	English 1000Base-SX
	French 0/110 · 11 Needs editing
43 ../../protocols/ethernet.rst:178
	English Two multi-mode or single mode optical fibers with lasers
	French 0/560 · 56 Needs editing
44 ../../protocols/ethernet.rst:179 • ../../protocols/ethernet.rst:358
	English 10 Gbps
	French 0/100 · 7 Needs editing
45 ../../protocols/ethernet.rst:179
	English Optical fiber but also Category 6 UTP
	French 0/370 · 37 Needs editing
46 ../../protocols/ethernet.rst:180
	English 40-100 Gbps
	French 0/110 · 11 Needs editing
47 ../../protocols/ethernet.rst:180
	English Optical fiber (experiences are performed with copper)
	French 0/530 · 53 Needs editing
48 ../../protocols/ethernet.rst:192 • ../../protocols/ethernet.rst:308
	English Footnotes
	French 0/100 · 9 Needs editing
49 ../../protocols/ethernet.rst:193
	English Additional information about the history of the Ethernet technology may be found at http://ethernethistory.typepad.com/
	French 0/1190 · 119 Needs editing
50 ../../protocols/ethernet.rst:195
	English Initially, the OUIs were allocated by Xerox [DP1981]_. However, once Ethernet became an IEEE and later an ISO standard, the allocation of the OUIs moved to IEEE. The list of all OUI allocations may be found at http://standards.ieee.org/regauth/oui/index.shtml
	French 0/2590 · 259 Needs editing
51 ../../protocols/ethernet.rst:197
	English The official list of all assigned Ethernet type values is available from http://standards.ieee.org/regauth/ethertype/eth.txt
	French 0/1240 · 124 Needs editing
52 ../../protocols/ethernet.rst:199
	English The attentive reader may question the need for different `EtherTypes` for IPv4 and IPv6 while the IP header already contains a version field that can be used to distinguish between IPv4 and IPv6 packets. Theoretically, IPv4 and IPv6 could have used the same `EtherType`. Unfortunately, developers of the early IPv6 implementations found that some devices did not check the version field of the IPv4 packets that they received and parsed frames whose `EtherType` was set to `0x0800` as IPv4 packets. Sending IPv6 packets to such devices would have caused disruptions. To avoid this problem, the IETF decided to apply for a distinct `EtherType` value for IPv6. Such a choice is now mandated by :rfc:`6274` (section 3.1), although we can find a funny counter-example in :rfc:`6214`.
	French 0/7790 · 779 Needs editing
53 ../../protocols/ethernet.rst:201
	English These network interfaces compute the TCP checksum while a segment is transferred from the host memory to the network interface [SH2004]_.
	French 0/1370 · 137 Needs editing
54 ../../protocols/ethernet.rst:203
	English Fortunately, IEEE was able to define the [IEEE802.3]_ frame format while maintaining backward compatibility with the Ethernet [DIX]_ frame format. The trick was to only assign values above 1500 as `EtherType` values. When a host receives a frame, it can determine whether the frame's format by checking its `EtherType/Length` field. A value lower smaller than `1501` is clearly a length indicator and thus an [IEEE802.3]_ frame. A value larger than `1501` can only be type and thus a [DIX]_ frame.
	French 0/4970 · 497 Needs editing

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