RouterA is acting as an OSPF ABR between Area 1 and Area 0 as shown in Figure 8.3. Which of the following are valid IPv6 addresses? (Choose three.) ○Ī router that is running both IPv4 and IPv6 addressing on the same interface is known as what type of router? ○ Some of the more technical details can be found here: Īll these values starting from /74 are not exact.Which of the following are invalid IPv6 communication types? (Choose two.) ○ Ip -6 – For configuring/viewing IPv6 interfaces and routesĬalculating Unique Link Local Address (ULA): ::ffff:0:0/96 IPv4 to IPv6 Address, eg: ::ffff:10.10.10.10 (RFC 4038)Ģ001::/16 /32 subnets assigned to providers, they assign /48, /56 or /64 to the customerĢ001:db8::/32 reserved for use in documentationĢ001:678::/29 Provider Independent (PI) adresses and anycasting TLD nameserversĢ002::/16 6to4 scope, 2002:c058:6301:: is the 6to4 public router anycast (RFC 3068)Ĭonfiguring SLAAC (auto configuration) on Redhat/CentOS flavours of Linux: You can do this by enabling IPv6 on an interface which is already configured automatically on boot. For example (this is also where the table “IPv6 Subnet Reference IP Address” comes in a lot of handy above):įc00::/8 centrally assigned by unkown, routed within a site (RFC 4193)įd00::/8 free for all, global ID must be generated randomly with pseudo-random algorithm, routed within a site (RFC 4193)įf00::/8 multicast, following after the prefix ff there are 4 bits for flags and 4 bits for the scope In most cases a subnet calculator will not be required, since IPv6 using hex (hexadecimal) – and so long as the prefix length is a multiple of 4, it makes it quite easy. Using a /48 allocation would allow them to do so. 48 allocations are usually provided to business, who require additional VLANs or may require the range to be split up. ![]() In fact this is the case with assigning IPv6 allocations, it can be done fairly easily without any calculator (I’ll demonstrate this later in the reference sheet): It is fairly easy to calculate /64 allocations, and a subnet calculator is not required. It allows auto configuration, or SLAAC so makes life a lot easier when configuring. ![]() ![]() 64 IPv6 allocations are usually given to end users, who do not require any VLANs. Note: The IP address above is an IP address allocated to Crucial Paradigm. Brought to your by your friendly web hosting provider Crucial. ![]() The following article is aimed at providing some quick details on IPv6, which can be used as an IPv6 Subnet Cheat Sheet/Reference.
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