metrotek ETS-1000, Руководство по эксплуатации

Страница: 58 / 110

58 Analysis. Typical tasks and solutions
5.12.5 TCP-client
TCP-client is a utility to establish connection with remote network node,
to receive data from it and to transmit data to it.
TCP-client option
10
allows to manage the remote node via TELNET pro-
tocol. Remote control commands are described in Appendix B.
To establish connection perform the following steps:
•
Set connection parameters ( TCP-client
⇒
Setup ( )):
– enter domain name or IP address of a node;
– enter port number (see Table 5.4).
• Open TCP connection (press ( Open )).
If TCP connection is successfully established, user can enter remote control
commands and request web pages from server.
If there are problems with TCP connection establishing, the error message
will be displayed. Some possible messages:
•
protocol not supported;
•
can’t assign requested address;
•
network is down;
•
network is unreachable;
• network dropped connection on reset;
• software caused connection abort;
• connection reset by peer;
• connection timed out;
• connection refused;
• host is down;
• no route to host.
Port numbers of TCP/IP protocol are displayed in Table 5.4.
Table 5.4. Port numbers of TCP/IP protocol
Port number Protocol
21 FTP
22 SSH
23 TELNET
25
SMTP
80 HTTP (WWW)
161 SNMP
10
The option is not included in the basic configuration; should be purchased additionally.
ETS-1000. Operations manual