Page 12
4 Initial Start of Operation
4.3.1 Menu Option 0: Server configuration
The setup of the network parameters can be altered here:
IP Address : (172) .(016) .(003) .(202)
Set Gateway IP Address (Y) Y
Gateway IP Address : (172) .(016) .(003) .(002)
Netmask: Number of Bits for Host Part (0=default) (24)
IP addresses in the Telnet setup are entered as four separate decimal numbers (0-255), the Setup always shows
the number to be changed and waits for an input. It looks like this:
IP Address : (172) _
_ represents the cursor. Enter a new value and press RETURN. If you press RETURN without entering a
new value, the old one is taken. After RETURN the next number is displayed:
IP Address : (172) 192 .(016) _
Now you can enter the second part of your IP address and conrm it with RETURN. Afterwards you can enter
the third and nally the fourth part of the address. After entering all four parts the screen looks like this:
IP Address : (172) 192 .(016) 168 .(003) 100 .(202) 11
So, in this example you changed the IP address from 172.16.3.202 to 192.168.100.11.
The netmask for this converter has to be dened as a single decimal number representing the number of re-
served bits of the host part. If your netmask has to be set to 255.255.255.0, 24 bits are set for the net part and
8 bits reserved for the host part. So you would have to enter a 8. A netmask of 255.255.0.0 is represented by a
16, in order to dene a netmask of 255.0.0.0 you would have to enter 24.
Class A: 24 bits e.g. 255.000.000.000
Class B: 16 bits e.g. 255.255.000.000
Class C: 8 bits e.g. 255.255.255.000
4.3.2 Menu Option 1: Security configuration
Setting the Telnet conguration password prevents unauthorized access of the setup menu via a Telnet connection
to port 9999. Default password is meinberg. To change this password enter this menu by pressing 1 and return.
After the password is changed it has to be acknowledged by reentering it.
4.3.3 Menu Option 2: SNMP Configuration
Here you can setup the SNMP parameters:
SNMP community name for read (public):
The SNMP community value is some kind of a rudimentary access control. Every SNMP request pointed to
the module includes a community string dened by the originator of the request. This community is checked
against the congured community names and a reply is only sent if they matched. In order to improve SNMP
security, the Converter module additionally checks the IP address of the SNMP client and only accepts requests
by hosts congured as SNMP trap receivers. So, if you want to send SNMP requests to the module, you have to
dene the IP address of your PC as a SNMP trap receiver (see below).
SNMP community name for write (rwpublic):
An incoming SNMP request coming with this community string is granted read-writeaccess, meaning you can
change a value. At the moment there are no variables accessible for write-access, so this value can be used to
add a second SNMP community to be accepted by the module.
12
Date: 2nd July 2015
NTP-SLAVE-CLOCK
Содержание NTP-SLAVE-CLOCK
Страница 2: ......
