January 2008
Intermediate to advanced
624 pages
14h 16m
English
Content preview from Windows Server® 2008 TCP/IP Protocols and Services
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Differences Between IPv4 and IPv6
Table 8-1 lists some of the differences between IPv4 and IPv6.
Table 8-1. Differences Between IPv4 and IPv6
Category | IPv4 | IPv6 |
|---|---|---|
Address length | 32 bits | 128 bits |
Header size | 20–60 bytes | 40 bytes |
IPsec header support | Optional | Required |
Prioritized delivery support | Limited | Better |
Fragmentation | Done by hosts and routers | Done by hosts only |
Is a header checksum present? | Yes | No |
Does the header include options? | Yes | No |
Link-layer address resolution | Broadcast ARP Request frames | Multicast Neighbor Solicitation messages |
Error reporting and diagnostic protocol | ICMP (for IPv4) | ICMPv6 |
Multicast group membership protocol | IGMPv1, IGMPv2, IGMPv3 | MLD, MLDv2 |
Router discovery support | Optional | Required |
Network layer broadcast addresses? | Yes | No |
Host configuration | DHCP or manual ... |
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