cnp3-ebook/protocols/ipv6 — English @ Weblate

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110 ../../protocols/ipv6.rst:382

	English ``10`` (resp. ``11``) : if a node does not recognize this header, it must return a control packet (ICMP, see later) back to the source (resp. except if the destination was a multicast address) 192/10000 · 192
111 ../../protocols/ipv6.rst:384

	English This encoding allows the designers of protocol extensions to specify whether the option must be supported by all nodes on a path or not. Still, deploying such an extension can be difficult in practice. 201/10000 · 201
112 ../../protocols/ipv6.rst:388

	English Two `hop-by-hop` options have been defined. :rfc:`2675` specifies the jumbogram that enables IPv6 to support packets containing a payload larger than 65535 bytes. These jumbo packets have their `payload length` set to `0` and the jumbogram option contains the packet length as a 32 bits field. Such packets can only be sent from a source to a destination if all the routers on the path support this option. However, as of this writing it does not seem that the jumbogram option has been implemented. The router alert option defined in :rfc:`2711` is the second example of a `hop-by-hop` option. The packets that contain this option should be processed in a special way by intermediate routers. This option is used for IP packets that carry Resource Reservation Protocol (RSVP) messages, but this is outside the scope of this book. 830/10000 · 830
113 ../../protocols/ipv6.rst:391

	English The `Destinations Option` header uses the same format as the `Hop-by-Hop Options` header. It has some usages, e.g. to support mobile nodes :rfc:`6275`, but these are outside the scope of this document. 201/10000 · 201
114 ../../protocols/ipv6.rst:395

	English The `Fragment Options` header is more important. An important problem in the network layer is the ability to handle heterogeneous datalink layers. Most datalink layer technologies can only transmit and receive frames that are shorter than a given maximum frame size. Unfortunately, all datalink layer technologies use different maximum frames sizes. 349/10000 · 349
115 ../../protocols/ipv6.rst:399

	English Each datalink layer has its own characteristics and as indicated earlier, each datalink layer is characterized by a maximum frame size. From IP's point of view, a datalink layer interface is characterized by its `Maximum Transmission Unit (MTU)`. The MTU of an interface is the largest packet (including header) that it can send. The table below provides some common MTU sizes. 377/10000 · 377
116 ../../protocols/ipv6.rst:402

	English Datalink layer 14/10000 · 14
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

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