SCALANCE W780/W740 to IEEE 802.11n Web Based Management
Configuration Manual, 08/2018, C79000-G8976-C267-13
77
IPv4 / IPv6
What are the essential differences?
IP configuration
• DHCP server
• Manual
• Stateless Address Autoconfiguration (SLAAC): Stateless
autoconfiguration using NDP (Neighbor Discovery Proto-
col)
– Creates a link local address for every interface that
does not require a router on the link.
– Checks the uniqueness of the address on the link that
requires no router on the link.
– Specifies whether the global addresses are obtained
via a status-free mechanism, a mechanism with status
or via both mechanisms. (Requires a router on the
link.)
• Manual
• DHCPv6 (status dependent)
Available IP addresses 32-bit: 4, 29 * 10
9
ad-
128-bit: 3, 4 * 10
38
addresses
Address format Decimal: 192.168.1.1
with port: 192.168.1.1:20
Hexadecimal: 2a00:ad80::0123
with port: [2a00:ad80::0123]:20
IP addresses of the interface 4 IP addresses Multiple IP addresses
• LLA: A link local address (formed automatically)
fe80::/128 per interface
• ULA: Several unique local unicast addresses per inter-
face
• GUA: Several global unicast addresses per interface
Header
• Checksum
• Variable length
• Fragmentation in the
header
• No security
• Checking at a higher layer
• Fixed size
• Fragmentation in the extension header
Only endpoint of the communication
Quality of service Type of Service (ToS) for
The prioritization is specified in the header field "Traffic
Types of frame Broadcast, multicast,
Multicast, unicast, anycast
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