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Extron XTP CrossPoint 1600 and 3200 ... - Extron Electronics

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Help<br />

For Telnet comm<strong>and</strong> definitions, at the Telnet prompt, type ? <strong>and</strong> then press .<br />

Quit<br />

Subnetting — A Primer<br />

Exit the Telnet utility by typing quit <strong>and</strong> then pressing at the Telnet prompt. If you<br />

are connected to the <strong>XTP</strong> <strong>CrossPoint</strong> switcher, access the Telnet prompt by typing the<br />

Escape character (+).<br />

It is not the purpose of this guide to describe TCP/IP protocol in detail. However, some<br />

underst<strong>and</strong>ing of TCP/IP subnetting (a subnet is a subset of a network — a set of IP devices<br />

that have portions of their IP addresses in common) is necessary in order to underst<strong>and</strong><br />

the interaction of the <strong>XTP</strong> <strong>CrossPoint</strong> switcher <strong>and</strong> the mail server gateway. To underst<strong>and</strong><br />

subnetting at the level required to install <strong>and</strong> operate the <strong>XTP</strong> <strong>CrossPoint</strong> switcher, you<br />

must underst<strong>and</strong> the concepts of a gateway, analog <strong>and</strong> remote devices, IP addresses <strong>and</strong><br />

octets, <strong>and</strong> subnet masks <strong>and</strong> octets.<br />

Gateways<br />

The <strong>XTP</strong> <strong>CrossPoint</strong> switcher can communicate with the e-mail server that the switcher<br />

uses for e-mail notification directly (if they are on the same subnet) or the communication<br />

can be routed via a gateway (a computer that provides a link between different subnets).<br />

Analog <strong>and</strong> Remote Devices<br />

The analog <strong>and</strong> remote devices are defined from the point of view of the function being<br />

described. In this guide, subnetting is an issue when you are using the controlling PC to set<br />

TCP/IP <strong>and</strong> e-mail values in the matrix switcher (see Email Settings Page on page 120).<br />

When you are setting up the variables for e-mail notification, which may include subnetting,<br />

the matrix switcher is the analog device <strong>and</strong> the e-mail server is the remote device.<br />

IP Addresses <strong>and</strong> Octets<br />

Valid IP addresses consist of four 1-, 2-, or 3-digit numeric subfields, properly called<br />

“octets,” separated by dots (periods) (see figure 76). Each octet can be numbered from 000<br />

through 255. Leading zeroes, up to three digits total per octet, are optional. Values of 256<br />

<strong>and</strong> above are invalid.<br />

Typical IP Address: 192.168.254.254<br />

Octets<br />

Figure 76. Typical IP Address<br />

<strong>XTP</strong> <strong>CrossPoint</strong> <strong>1600</strong> <strong>and</strong> <strong>3200</strong> Switchers • Ethernet Connection 145

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