Extron electronics System 5 IP Series User Manual page 116

Reference Material, cont'd
Pass-through allows control systems to work with the switcher and provides a link
Ping (ICMP) is a utility/diagnostic tool that tests network connections. It is used to
Port number is a preassigned address within a server that provides a direct route
SMTP (Simple Mail Transfer Protocol) is a standard for e-mail exchange across
Static IP refers to an IP address that has been specifically (instead of dynamically—
Subnet See: subnetwork.
Subnet address The portion of an IP address that is specifically identified by the
Subnet mask A 32-bit address mask used in IP to identify the bits of an IP address
Subnetwork is a network that is part of a larger IP network and is identified by a
TCP (Transmission Control Protocol) is a connection-oriented protocol defined at
TCP/IP (Transmission Control Protocol/Internet Protocol) is the communication
Telnet is a standard terminal emulation utility/protocol that allows a computer to
A-10 System 5 IP Switchers • Reference Material
the Internet, a table (see ARP) relates the device's IP address to its
corresponding physical (MAC) address on the LAN.
between two ports.
determine if the host has an operating connection and is able to exchange
information with another host. The term (ping) is a reference to submarine
sonar, which sends out a signal and waits to hear it echo ("ping") back from a
submerged object, much like how the ping utility functions in a network.
from the application to the transport layer or from the transport layer to the
application of a TCP/IP system.
systems/networks on the Internet.
see DHCP above) assigned to a device or system in a network configuration.
This type of address requires manual configuration of the actual network
device or system and can only be changed manually or by enabling DHCP.
subnet mask as the subnetwork.
that are used for the subnet address. Using a mask, the router does not need
to examine all 32 bits, only those selected by the mask.
subnet address. Networks can be segmented into subnetworks to provide a
hierarchical, multilevel routing structure.
the Transport layer of the OSI reference model. It provides reliable delivery
of data.
protocol (language) of the Internet. Computers and devices with direct
access to the Internet are provided with a copy of the TCP/IP program to
allow them to send and receive information in an understandable form.
communicate with a remote user/client. A user who wishes to access a
remote system initiates a Telnet session using the address of the remote client.
The user may be prompted to provide a user name and password if the client
is set up to require them. Telnet enables users to log in on remote networks
and use those resources as if they were locally connected.