Extron electronics CrossPoint 450 Plus 2412 HV, Руководство пользователя

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4-5
CrossPoint / MAV Matrix Switchers • Programmer’s Guide
Default IP addresses
To access the CrossPoint or MAV Plus switcher via the LAN port, you need the
Extron IP address, and may need the subnet mask and the gateway address. If the
IP address has been changed to an address comprised of words and characters,
you can determine the actual numeric IP address using the ping (ICMP) utility (see
appendix A, “Ethernet Connection”, for more details). If the addresses have not
been changed, the factory-specified defaults are:
• IP address 192.168.254.254
• Gateway address 0.0.0.0
• Subnet mask 255.255.0.0
Establishing a connection
Establish a network connection to a CrossPoint or MAV Plus switcher as follows:
1 . Open a TCP socket to port 23 using the switcher’s IP address.
N
If the local system administrators have not changed the value, the factory-
specified default, 192.168.254.254, is the correct value for this field.
The switcher responds with a copyright message including the date, the name
of the product, firmware version, part number, and the current date/time.
N
If the switcher is not password-protected, the device is ready to accept SIS
commands immediately after it sends the copyright message.
N If the switcher is password-protected, a password prompt appears below the
copyright message.
2 . If the switcher is password protected, enter the appropriate administrator or
user password.
If the password is accepted, the switcher responds with Login User or
Login Administrator .
If the password is not accepted, the Password prompt reappears.
Connection Timeouts
The Ethernet link times out after a designated period of time of no communications.
By default, this timeout value is set to 5 minutes but the value can be changed. See
the Configure port timeout commands on page 4-25.
N
Extron recommends leaving the default timeout at 5 minutes and periodically
issuing the Query (Q) command to keep the connection active. If there are long
idle periods, Extron recommends disconnecting the socket and reopening the
connection when another command must be sent.
Number of connections
A CrossPoint or MAV Plus switcher can have up to 200 simultaneous TCP
connections, including all http sockets and Telnet connections. When the
connection limit is reached, the switcher accepts no new connections until some
have been closed. No error message or indication is given that the connection limit
has been reached. To maximize performance of an IP Link device, the number of
connections should stay low and unnecessary open sockets should be closed.