Siemens SCALANCE XR-500

Description
2.6 Interface identifiers and addresses
SCALANCE XM-400/XR-500 Command Line Interface (CLI)
Configuration Manual, 11/2015, C79000-G8976-C252-10
43
2.6.3
IPv4 / IPv6
What are the essential differences?
IPv4
IPv6
IP configuration
• DHCP server
• Manual
• Automatic:
– Creates a link local address for every interface on
which IPv6 is activated.
– Stateless Address Autoconfiguration (SLAAC): State-
less autoconfiguration using NDP (Neighbor Discov-
ery Protocol)
• Manual
• Stateful DHCPv6
Available IP addresses 32-bit: 4, 29 * 10
9
ad-
dresses
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
Loopback
127.0.0.1
::1
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
Fragmentation
Host and router
Only endpoint of the communication
Quality of service Type of Service (ToS) for
prioritization
The prioritization is specified in the header field "Traffic
Class".
Types of frame Broadcast, multicast,
unicast
Multicast, unicast, anycast