Cisco 1005 - 1005 Router Bedienungsanleitung PDF herunterladen (Seite 4)

(such as an AUX port or a PC) to reinitialize. If a modem on an AUX port loses its initialization

string, you can use reverse telnet remotely to correct the problem.

A console port cannot be used for dial-on-demand routing; it has no corresponding async interface.●

Note: The remainder of this document addresses non-console connections.

Line Configuration

It is essential that the TTY line be configured before configuring/initializing the modem itself. The two

main reasons are:

To allow reverse telnet access to the modem.

●

If you change the line speed after the modem has been initialized, the modem will no longer

communicate with the router until it is again told at what speed to talk to the router.

●

In general, the following line configuration works best:

line "x"

TTY #. AUX port is line 1 on the router,

last_tty+1 on the access server, line 65 on

the Cisco 2600s and 3620, and line 129 on

the Cisco 3640.

speed

"xxxxx"

Set to the highest speed in common

between the modem and the port. This

value is usually 115200 baud, but see the

Bitrate Information.

stopbits 1

Improve throughput by reducing async

framing overhead (default is stopbits 2).

flowcontrol

hardware

RTS/CTS flow control.

modem

inout

Drop connection on loss of DCD (DSR).

Cycle DTR for connection close. This

command also allows outbound

connections to the modem.

transport

input all |

telnet

Allow outbound connections to this line.

Needed in order to allow reverse telnet to

the modem.

This configuration assumes that the modem will always talk to us at "speed" (which is why you must LOCK

SPEED on the modem), that the CD lead of the modem reflects the actual state of the carrier, and that the

modem will hang up when the router drops DTR. Avoid substituting autobaud for speed if at all possible;

it usually results in lower throughput.

Bitrate Information

Maximum Speed Supporting platforms and

interfaces

38400 Most AUX ports

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