CCNA 1 v7 Modules 11 - 13: IP Addressing Exam Answers Full
IPv6 Link Local Addresses can be configured in two ways. These Link-Local address configuration ways are : Auto-Address Configuration; Manual Configuration . Auto-Address Configuration is done automaticaly with the help of Link Local Prefix (FE80::/10) and Interface Identifier in EUI-64 Format. This is the widely used method to configure a IPv6 Convert MAC address to Link-local address or Link-local The form below does the conversion for you (both ways); Start Link-local address with 'fe80::'. Make sure you don't cut-and-paste spaces or tabs. Link-Local IPv6 Address » Networkustad Sep 01, 2019 CCNA 1 v7 Modules 11 - 13: IP Addressing Exam Answers Full
fe80:: / 10 — Addresses in the link-local prefix are only valid and unique on a single link (comparable to the auto-configuration addresses 169.254.0.0 / 16 of IPv4). Within this prefix only one subnet is allocated (54 zero bits), yielding an effective format of fe80:: / 64 .
Aug 07, 2013 · In IPv6 Link-Local addresses are mandatory addresses according to RFC 4291. This means that all interfaces are required to have at least one Link-Local unicast address from the address block fe80::/10, which has been reserved for link-local unicast addressing. The actual link-local addresses are though assigned with the prefix fe80::/64. The Link-Local is however a fully functional address which you can use for multiple things. Using Link-Local. Here at the office my colleague has a desktop and his Link-Local Address is fe80::821f:2ff:fed6:5f08. So can I ping the address? wido@wido-desktop:~$ ping6 fe80::821f:2ff:fed6:5f08 connect: Invalid argument wido@wido-desktop:~$ In IOS, the assumption is that the link-local address is always constructed using Modified EUI-64 - and if it is configured manually, then it is assumed that the last 64 bits of the link-local address already contain the final Modified EUI-64 value. Therefore, if you later ask the router to configure its global prefix on the same interface
“its required Link-Local address for each interface.“ So we have just learned that IPv6 hosts must have a link-local unicast IPv6 address for each interface. We also know that this IPv6 link-local unicast address must start with FE80:: as per RFC4291 section 2.4. But where DO the rest of the numbers after FE80…
If the IPv6 address you want to connect to starts with fe80::, we are talking about a link-local address. Access to this address is only possible within the same network or domain. Every device has a link-local address. Either assigned by an administrator or automatic. To get all the details of the network interfaces, you can use ifconfig. I'm looking to prevent the IPv6 link local address from being randomly assigned. I'm not looking to disable v6 but rather statically assign my own link local. I've done ifconfig vboxnet0 inet6 add fe80::/126 and it works and I can do ping6 -I vboxnet0 fe80::1 and successfully ping my VM but then eventually I end up with 2 link local addresses # Edited by hand to avoid using the ipv6 link local scopeless address # check resolv.conf.old to see normal file #nameserver fe80::beef nameserver 127.0.1.1 search lan So. unless I start playing with chattr +i and other tricks to prevent that script (or whatever it is) from touching /etc/resolv.conf, I feel like this semi-static option isn't In the IPv6 address scheme, the network of fe80::/10 is reserved for link-local addresses. The address fe80::/64 is a network address that indicates, in this workstation, fe80::/64 is actually used for link-local addresses. Thus the address fe80::30d0:115:3f57:fe4c/128 is a valid IPv6 link-local address. Sep 14, 2012 · Link-local prefixes (fe80::/10), for the sake of my example, are the color green. Now imagine you are standing in a room with three doors. Each door is painted green. To you, each door looks identical. This means that each door is configured with the same link-local prefix (again, fe80::/10). IPv6-enabled hosts create an IPv6 link-local address even if the device has not been assigned a global unicast IPv6 address. true Typically, it is the ________________ IPv6 address of the router that is used as the default gateway for other devices on the link