Avaya Configuring IP Utilities Uživatelský manuál stáhnout pdf (Strana 49)

Overview of IP Utilities

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Both devices involved in a TFTP transfer are senders and receivers. One device

sends data and receives acknowledgments; the other device sends

acknowledgments and receives data.

The IP router includes a client and server implementation of TFTP, enabling the

router to transmit and receive files across a network.

For information about creating TFTP on the router, see Chapter 1. For information

about editing TFTP parameters, see Chapter 5.

Telnet Overview

Telnet is a virtual terminal protocol that is part of the TCP/IP protocol suite. It

allows you to access any system on your network running the Telnet server

software. Accessing Telnet establishes a virtual connection between your terminal

and the specified host. Once you connect to a host through Telnet, your terminal

appears to be connected directly to that host.

Telnet offers three basic services:

• It defines a network virtual terminal that provides a standard interface to

remote systems. Clients do not have to understand the details of all possible

remote systems; they are built to use the standard interface.

• It allows client and server to negotiate options, and it provides a set of

standard options.

• It treats both ends of the connection symmetrically. So, instead of forcing the

client side to connect to a user’s terminal, Telnet allows an arbitrary program

to become a client. Furthermore, either end of the connection can negotiate

options.

Telnet is used primarily to access the Technician Interface. You can execute

Technician Interface commands from a remote host (inbound Telnet) or originate

an outgoing Telnet session (outbound Telnet) to another Bay Networks router or

network device that accepts Telnet. You use outbound Telnet to access remote

routers when Site Manager or Simple Network Management Protocol (SNMP) is

unavailable.

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Avaya Configuring IP Utilities Uživatelský manuál Strana 49