cnp3-ebook/exercises/ipv6 — French @ Weblate: Assign IP subnets to all links in this network so …

Translation

English

French

Needs editing

Skip

	English	French	Actions
	on router ``R4``
	on router ``R6``
	What do you think about the proposed configuration?
	Sometimes, static routes must be configured on networks to enforce certain paths. Consider the six routers network shown in the figure below.
	In this network, we will focus on four IPv6 prefixes :
	``p:0000::/64`` used on the link ``A1-R1``. ``A1`` uses address ``p:0000::A1/64``
	``p:0001::/64`` used on the link ``A2-R3``. ``A2`` uses address ``p:0001::A2/64``
	``p:0002::/64`` used on the link ``B1-R5``. ``B1`` uses address ``p:0002::B1/64``
	``p:0003::/64`` used on the link ``B2-R6``. ``B2`` uses address ``p:0003::B2/64``
	Can you configure the forwarding tables of the six routers to achieve the following network objectives :
	All packets sent by ``B1`` and ``B2`` to ``A1`` and ``A2`` are always forwarded via ``R2`` while all packets from ``A1`` and ``A2`` are always forwarded via ``R4``
	The packets whose destinations are ``A1``, ``A2``, ``B1`` or ``B2`` are never forwarded via router ``R4``
	The packets sent by ``A1`` or ``A2`` towards ``B1`` are always forwarded via ``R2`` while the packets towards ``B2`` are always forwarded via ``R4``.
	When creating these forwarding tables, try to minimize the number of entries that you install on each router.
	When a network is designed, an important element of the design is the IP address allocation plan. A good allocation plan can provide flexibility and help to reduce the size of the forwarding tables.
	Assign IP subnets to all links in this network so that you can reduce the number of entries in the forwarding tables of all routers. Assume that you have received a ``/56`` prefix that you can use as you want. Each subnet containing a host must be allocated a ``/64`` subnet.
	Configuring IPv6 Networks
	With the previous exercises, you have learned how to reason about IPv6 networks "on paper". Given the availability of IPv6 implementations, it is also possible to carry out experiments in real and virtual labs. Several virtual environments are possible. In this section, we focus on mininet_. mininet_ is an emulation framework developed at Stanford University that leverages the namespaces features of recent Linux kernels. With those namespaces, a single Linux kernel can support a variety of routers and hosts interconnected by virtual links. mininet_ has been used by several universities as an educational tool, but unfortunately it was designed without IPv6 support.
	During the last years, `Olivier Tilmans <https://inl.info.ucl.ac.be/otilmans.html>`_ and `Mathieu Jadin <https://inl.info.ucl.ac.be/mjadin.html>`_ have developed the missing piece to enable students to use mininet_ to experiment with IPv6: ipmininet_. ipmininet_ is a python module that provides the classes that are required to automatically configure IPv6 networks with different routing protocols. It is available from PyPi from https://pypi.python.org/ipmininet.
	The syntax of IPMininet_ is relatively simple and can be learned by looking at a few examples.
	Let us start our exploration of IPv6 routing with a simple network topology that contains two hosts and three routers and uses static routes.
	IPMininet_ simplifies the creation of the network topology by providing a simple API. For this, you simply need to declare a class that extends the ``IPTopo`` class.
	Then, you need to extend the build method that creates routers and hosts.
	Although IPMininet_ can assign prefixes and addresses automatically, we use manually assigned addresses in this example.
	We use five /64 IPv6 prefixes in this network topology:
	``2001:db8:1341:1::/64`` on the link between ``a`` and ``r1``
	``2001:db8:1341:12::/64`` on the link between ``r1`` and ``r2``
	``2001:db8:1341:13::/64`` on the link between ``r1`` and ``r3``
	``2001:db8:1341:23::/64`` on the link between ``r2`` and ``r3``
	``2001:db8:1341:1::/64`` on the link between ``b`` and ``r3``
	We can then manually configure the IPv6 addresses of each host/router on each link. Let us start with the links attached to the two hosts.

Loading…

None

Source string added

English 0 characters edited

4 years ago

Browse all string changes

Glossary

English	French
No related strings found in the glossary.

30388 String information

Source string location

../../exercises/ipv6.rst:517

String age

4 years ago

Last updated

2 months ago

Source string age

4 years ago

Translation file

locale/fr/LC_MESSAGES/exercises/ipv6.po, string 54

Shortcut	Action
`?`	Open available keyboard shortcuts.
`Alt` + `Home`	Navigate to the first translation in the current search.
`Alt` + `End`	Navigate to the last translation in the current search.
`Alt` + `PageUp` or `Ctrl` + `↑` or `Alt` + `↑` or `Cmd` + `↑` or	Navigate to the previous translation in the current search.
`Alt` + `PageDown` or `Ctrl` + `↓` or `Alt` + `↓` or `Cmd` + `↓` or	Navigate to the next translation in the current search.
`Ctrl` + `Enter` or `Cmd` + `Enter`	Submit current form; this works the same as pressing Save and continue while editing translation.
`Ctrl` + `Shift` + `Enter` or `Cmd` + `Shift` +`Enter`	Unmark translation as Needing edit and submit it.
`Alt` + `Enter` or `Option` + `Enter`	Submit the string as a suggestion; this works the same as pressing Suggest while editing translation.
`Ctrl` + `E` or `Cmd` + `E`	Focus on translation editor.
`Ctrl` + `U` or `Cmd` + `U`	Focus on comment editor.
`Ctrl` + `M` or `Cmd` + `M`	Shows Automatic suggestions tab.
`Ctrl` + `1` to `Ctrl` + `9` or `Cmd` + `1` to `Cmd` + `9`	Copies placeable of a given number from source string.
`Ctrl` + `M` followed by `1` to `9` or `Cmd` + `M` followed by `1` to `9`	Copy the machine translation of a given number to current translation.
`Ctrl` + `I` followed by `1` to `9` or `Cmd` + `I` followed by `1` to `9`	Ignore one item in the list of failing checks.
`Ctrl` + `J` or `Cmd` + `J`	Shows the Nearby strings tab.
`Ctrl` + `S` or `Cmd` + `S`	Focus on search field.
`Ctrl` + `O` or `Cmd` + `O`	Copy the source string.
`Ctrl` + `Y` or `Cmd` + `Y`	Toggle the Needs editing checkbox.
`→`	Browse the next translation string.
`←`	Browse the previous translation string.