diff --git a/guide/english/network-engineering/ipv6-header/index.md b/guide/english/network-engineering/ipv6-header/index.md index ac16c652cf..58a9d38af2 100644 --- a/guide/english/network-engineering/ipv6-header/index.md +++ b/guide/english/network-engineering/ipv6-header/index.md @@ -3,13 +3,29 @@ title: IPv6 Header --- ## IPv6 Header Format -This is a stub. Help our community expand it. +Below is the IPv6 header format according to [RFC2460](https://tools.ietf.org/html/rfc2460): -This quick style guide will help ensure your pull request gets accepted. +![Image of IPv6 Header](https://i.imgur.com/Jq0eKrO.jpg) - +##### Version [4-bits] + * Internet Protocol (IP) version number (decimal 6, binary 0110) +##### Traffic Class [8-bits] + * Identifies different classes or priorities of IPv6 packets +##### Flow Label [20-bits] + * Services that require special handling can utilize this field (defaults to all 0's) +##### Payload Length [16-bits] + * Specifies the size of the payload including extension headers. Value is measured in Octets (8-bit values) +##### Next Header [8-bits] + * Specifies the type of the next header after the IPv6 header +##### Hop Limit [8-bits] + * Number of hops before the packet is discarded + * Value is decremented by each forwarding node in the network. When the value reaches 0, the packet is discarded + * Maximum hops using 8-bits is `2^8` or 256 hops +##### Source Address [128-bits] + * The IPv6 address of the device sending the packet +##### Destination Address [128-bits] + * The IPv6 address of the device(s) destined to receive the packet + * Destination may be more than one host/device when using Multicast/Anycast #### More Information: - - - +* [List of IP protocol numbers used in the Next Header](https://en.wikipedia.org/wiki/List_of_IP_protocol_numbers)