MRV Communications LX-4000 Series Informacje Techniczne Pobierz pdf (Strona 104)

100

101

Setting Up Remote Console Management

Verifying Serial Port Connections 3-13

The LX unit will make three attempts to log in the user by using

LDAP, RADIUS, TACACS+, or RSA SecurID before it implements

Fallback. After the third attempt at logging in by using the

configured authentication method (RADIUS, TACACS+, or RSA

SecurID), the username/password combination will be validated

against the LOCAL security database for the LX unit.

LDAP, RADIUS, TACACS+, or RSA SecurID must be enabled on

a port in order for Fallback to function on the port. When all four

methods (such as LDAP, RADIUS, TACACS+, or RSA SecurID)

are disabled on the port, Fallback is ignored by the port.

L When using SSH and Fallback, make sure your SSH

client is configured to send a minimum of four

Password prompts (see your SSH client

documentation). You may also need to increase the

LoginGraceTime on the LX. To increase the

LoginGraceTime, go to the shell, change the

directory to /config, and edit the sshd_config file.

X To enable fallback on a port

1. Access the Asynchronous Command Mode for the

asynchronous port on which to enable Fallback.

2. Execute the following command to enable Fallback

authentication on the port:

Example Async5:0 >>authentication fallback enable

Verifying Serial Port Connections

When you use the Test Port command, the server tests the

physical connection between itself and a device attached to the

port. To end the test at any time, enter CTRL-C. The Test Port

feature allows you to validate cable configuration and port

settings, such as baud rate and bit parity.

See

“Command

Mode

Descriptions”

on page 1-5

for information

about

accessing

Asynchronous

Command

Mode.

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