cnp3-ebook/protocols/ipv6 — English @ Weblate

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117 ../../protocols/ipv6.rst:402

	English MTU 3/10000 · 3
118 ../../protocols/ipv6.rst:404

	English Ethernet 8/10000 · 8
119 ../../protocols/ipv6.rst:404

	English 1500 bytes 10/10000 · 10
120 ../../protocols/ipv6.rst:405

	English WiFi 4/10000 · 4
121 ../../protocols/ipv6.rst:405

	English 2272 bytes 10/10000 · 10
122 ../../protocols/ipv6.rst:406

	English ATM (AAL5) 10/10000 · 10
123 ../../protocols/ipv6.rst:406

	English 9180 bytes 10/10000 · 10
124 ../../protocols/ipv6.rst:407

	English 802.15.4 8/10000 · 8
125 ../../protocols/ipv6.rst:407

	English 102 or 81 bytes 15/10000 · 15
126 ../../protocols/ipv6.rst:408

	English Token Ring 10/10000 · 10
127 ../../protocols/ipv6.rst:408

	English 4464 bytes 10/10000 · 10
128 ../../protocols/ipv6.rst:409

	English FDDI 4/10000 · 4
129 ../../protocols/ipv6.rst:409

	English 4352 bytes 10/10000 · 10
130 ../../protocols/ipv6.rst:412

	English Although IPv6 can send 64 KBytes long packets, few datalink layer technologies that are used today are able to send a 64 KBytes packet inside a frame. Furthermore, as illustrated in the figure below, another problem is that a host may send a packet that would be too large for one of the datalink layers used by the intermediate routers. 337/10000 · 337
131 ../../protocols/ipv6.rst:418

	English The need for fragmentation and reassembly 41/10000 · 41
132 ../../protocols/ipv6.rst:422

	English To solve these problems, IPv6 includes a packet fragmentation and reassembly mechanism. In IPv4, fragmentation was performed by both the hosts and the intermediate routers. However, experience with IPv4 has shown that fragmenting packets in routers was costly [KM1995]_. For this reason, the developers of IPv6 have decided that routers would not fragment packets anymore. In IPv6, fragmentation is only performed by the source host. If a source has to send a packet which is larger than the MTU of the outgoing interface, the packet needs to be fragmented before being transmitted. In IPv6, each packet fragment is an IPv6 packet that includes the `Fragmentation` header. This header is included by the source in each packet fragment. The receiver uses them to reassemble the received fragments. 797/10000 · 797
133 ../../protocols/ipv6.rst:427

	English IPv6 fragmentation header 25/10000 · 25
134 ../../protocols/ipv6.rst:429

	English If a router receives a packet that is too long to be forwarded, the packet is dropped and the router returns an ICMPv6 message to inform the sender of the problem. The sender can then either fragment the packet or perform Path MTU discovery. In IPv6, packet fragmentation is performed only by the source by using IPv6 options. 326/10000 · 326
135 ../../protocols/ipv6.rst:433

	English In IPv6, fragmentation is performed exclusively by the source host and relies on the fragmentation header. This 64 bits header is composed of six fields : 154/10000 · 154
136 ../../protocols/ipv6.rst:435

	English a `Next Header` field that indicates the type of the header that follows the fragmentation header 97/10000 · 97

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