EZL-200F User
’
s Manual Ver. 2.1
Sollae Systems Co., Ltd.
- 51 -
http://www.sollae.co.kr
8.2
Connection Problem over TCP/IP
Checking parameters related with TCP/IP
When EZL-200F has a private network IP address, personal computer’s IP address has
to be the same sub network. Check if the IP address and local port number are
correct. The subnet mask, gateway IP address should be checked, too.
Table 8-1 major parameters related with TCP/IP
TCP Server side
TCP Client side
Local IP Address, Local Port, Subnet
Mask, Gateway IP Address and etc.
Local IP Address, Peer Address, Peer Port,
Subnet Mask, Gateway IP Address and etc.
PING Test
Confirm the connection over the network by PING test. If the EZL-200F doesn’t send
any reply from the request, check the network environment.
Firewall
In case the networks which need strong security, the access may be denied by their
firewall. Under this circumstance, users should ask the person in charge of their
network to release ports which will be used. (Ex: TCP 1470, UDP 50005)
Operation Mode
TCP connection is not possible when EZL-200F is operating in the ISP or Console
mode.
Communication Mode
To make TCP connection, both a server and client should exist. If there are only
servers or clients, TCP connection can’t be established.
Allowed IP Address
When users set the [Allowed IP Address], any hosts can’t be reachable except for a
host which has the allowed IP address. Inactivate the option or check the setting is
correct.
Checking the TCP status
TCP is a protocol connected one to one without multiple connection function.
Because of this, if a device is on TCP connection, other requests are denied. If users
are in this situation, check the network status by connecting on TELNET.
In case of using [Multiple Connection], EZL-200F can accept 8 hosts.
