Assignment Of An Ip Address; Introduction - Siemens SCALANCE X-200 Configuration Manual

Assignment of an IP address

3.1

Introduction

Introduction
An IE switch provides a wide range of functions for settings and diagnostics. To access
these functions over the network, the Internet protocol is used.
The Internet protocol has its own address mechanism using IP addresses. As the protocol of
layer 3 of the ISO/OSI reference model, the IP protocol is independent of hardware allowing
flexible address assignment. In contrast to layer 2 communication (where the MAC address
is permanently assigned to a device), this makes it necessary to assign an address to a
device explicitly.
This section describes the structure of an IP address and the various options for assigning
the address with an IE switch.
Note
The initial assignment of an IP address for X-200 IE switches cannot be made with Web
Based Management because this configuration tool can only be used if an IP address
already exists.
Address classes to RFC 1518 and RFC 1519
An IP address consists of 4 bytes. Each byte is represented in decimal, with a dot separating
it from the previous one. This results in the following structure, where XXX stands for a
number between 0 and 255:
XXX.XXX.XXX.XXX
The IP address is made up of two parts, the network ID and the host ID. This allows different
subnets to be created. Depending on the bytes of the IP address used as the network ID and
those used for the host ID, the IP address can be assigned to a specific address class.
1.x.x.x to 126.x.x.x
128.0.x.x to 191.255.x.x
192.0.0.x to 223.255.255.x
Multicast groups
Reserved for experiments
SCALANCE X-200
Configuration Manual, 03/2015, C79000-G8976-C285-06
IP address range Max. number of Max. number of
networks hosts/network
126 16777214
16383 65534
2097151
Class CIDR notation
A
B
254 C
D
E
3
/8
/16
/24
33