hopf Elektronik GmbH 7052RC, Техническое руководство

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N
ETWORK
C
ONFIGURATION FOR
ETH0
VIA THE
B
ASE
S
YSTEM
7052RC Network Management Server - V01.00 29 / 98
hopf
Elektronik GmbH
Nottebohmstr. 41
• D-58511 Lüdenscheid • Tel.: +49 (0)2351 9386-86 • Fax: +49 (0)2351 9386-93 • Internet: http://www.hopf.com • E-Mail: info@hopf.com
Class D Networks
The addresses from 224.xxx.xxx.xxx - 239.xxx.xxx.xxx are used as multicast addresses.
Class E Networks
The addresses from 240.xxx.xxx.xxx - 254.xxx.xxx.xxx are designated as "Class E" and are
reserved.
Gateway Address
The gateway or router address is required in order to be able to communicate with other net-
work segments. The standard gateway must be set to the router address which connects these
segments. This address must be within the local network.
Network Mask
The network mask is used to partition IP addresses outside of network classes A, B and C.
When entering the network mask it is possible to designate the number of bits of the IP-ad-
dress to be used as the network part and the number to be used as the host part, e.g.:
Network
Class
Network
Part
Host
Part
Network Mask Binary
Network Mask
Decimal
A 8 Bit 24 Bit 11111111.00000000.00000000.00000000 255.0.0.0
B 16 Bit 16 Bit
11111111.11111111.00000000.00000000 255.255.0.0
C 24 Bit 8 Bit
11111111.11111111.11111111.00000000 255.255.255.0
The number of bits for the host part is entered in order to calculate the network mask:
Network Mask Host Bits
255.255.255.252 2
255.255.255.248 3
255.255.255.240 4
255.255.255.224 5
255.255.255.192 6
255.255.255.128 7
255.255.255.000 8
255.255.254.000 9
255.255.252.000 10
255.255.248.000 11
. .
. .
255.128.000.000 23
255.000.000.000 24
Example:
Desired network mask: 255.255.255.128
Value to be entered: 7