I pv6


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I pv6

  1. 1. IPV6 packetlife.net Protocol Header Address Notation 8 16 24 32 Eliminate leading zeros from all two-byte sets Ver Traffic Class Flow Label Replace up to one string of consecutive zeros Payload Length Next Header Hop Limit with a double-colon (::) Address Formats Source Address Global unicast Global Prefix Subnet Interface ID Destination Address 48 16 64 Link-local unicastVersion (4 bits) Always set to 6 Interface IDTraffic Class (8 bits) A DSCP value for QoS 64 64Flow Label (20 bits) Identifies unique flows (optional) MulticastPayload Length (16 bits) Length of the payload in bytes Scope Flags Group IDNext Header (8 bits) Header or protocol which follows 8 4 4 112Hop Limit (8 bits) Similar to IPv4s time to live fieldSource Address (128 bits) Source IP address EUI-64 FormationDestination Address (128 bits) Destination IP address MAC Address Types EUI-64Unicast One-to-one communicationMulticast One-to-many communication Insert 0xfffe between the two halves of the MACAnycast An address configured in multiple locations Flip the seventh bit (universal/local flag) to 1 Multicast Scopes Extension Headers1 Interface-local 5 Site-local Hop-by-hop Options (0) Carries additional information which must be examined by every2 Link-local 8 Org-local router in the path4 Admin-local E Global Routing (43) Provides source routing functionality Special-Use Ranges Fragment (44)::/0 Default route Included when a packet has been fragmented by its source::/128 Unspecified Encapsulating Security Payload (50) Provides payload encryption (IPsec)::1/128 Loopback Authentication Header (51)::/96 IPv4-compatible* Provides packet authentication (IPsec)::FFFF:0:0/96 IPv4-mapped Destination Options (60) Carries additional information which pertains only to the recipient2001::/32 Teredo2001:DB8::/32 Documentation Transition Mechanisms Dual Stack2002::/16 6to4 Transporting IPv4 and IPv6 across an infrastructure simultaneouslyFC00::/7 Unique local TunnelingFE80::/10 Link-local unicast IPv6 traffic is encapsulated into IPv4 using IPv6-in-IP, UDP (Teredo), or Intra-Site Automatic Tunnel Addressing Protocol (ISATAP)FEC0::/10 Site-local unicast* TranslationFF00::/8 Multicast Stateless IP/ICMP Translation (SIIT) translates IP header fields, NAT * Deprecated Protocol Translation (NAT-PT) maps between IPv6 and IPv4 addressesby Jeremy Stretch v2.0