Ipv4 / Ipv6 - Siemens SCALANCE W770 Series Configuration Manuals

Description
2.6 Interface identifiers and addresses
2.6.3

IPv4 / IPv6

What are the essential differences?
IP configuration
Available IP addresses
Address format
Loopback
IP addresses of the interface
Header
Fragmentation
Quality of service
Types of frame
32
IPv4
● DHCP server
● Manual
32-bit: 4, 29 * 10 address‐
9
es
Decimal: 192.168.1.1
with port: 192.168.1.1:20
127.0.0.1
4 IP addresses
● Checksum
● Variable length
● Fragmentation in the
header
● No security
Host and router
Type of Service (ToS) for
prioritization
Broadcast, multicast, uni‐
cast
IPv6
● Stateless Address Autoconfiguration (SLAAC): Stateless
autoconfiguration using NDP (Neighbor Discovery
Protocol)
– 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)
128-bit: 3, 4 * 10 addresses
38
Hexadecimal: 2a00:ad80::0123
with port: [2a00:ad80::0123]:20
::1
Multiple IP addresses
● LLA: A link local address (formed automatically) fe80::/128
per interface
● ULA: Several unique local unicast addresses per interface
● GUA: Several global unicast addresses per interface
● Checking at a higher layer
● Fixed size
● Fragmentation in the extension header
Only endpoint of the communication
The prioritization is specified in the header field "Traffic Class".
Multicast, unicast, anycast
SCALANCE W770/W730 acc. to IEEE 802.11n Command Line Interface
Configuration Manual, 09/2017, C79000-G8976-C324-08