Fabric OS Administrator's Guide v7.0.0 (53-1002148-02, June 2011)

Fabric OS Administrator’s Guide 17

53-1002148-02

Fabric OS command line interface

• In a UNIX environment, enter the following string at the prompt:

tip /dev/ttyb -9600

If ttyb is already in use, use ttya instead and enter the following string at the prompt:

tip /dev/ttya -9600

Telnet or SSH sessions

Connect to the Fabric OS through a Telnet or SSH connection or through a console session on the

serial port. The switch must also be physically connected to the network. If the switch network

interface is not configured or the switch has been disconnected from the network, use a console

session on the serial port as described in “Console sessions using the serial port” on page 16.

NOTE

To automatically configure the network interface on a DHCP-enabled switch, plug the switch into the

network and power it on. The DHCP client automatically gets the IP and gateway addresses from the

DHCP server. The DHCP server must be on the same subnet as the switch. Refer to “DHCP

activation” on page 23.

Rules for Telnet connections

The following rules must be observed when making Telnet connections to your switch:

• Never change the IP address of the switch while two Telnet sessions are active; if you do, your

next attempt to log in fails. To recover, gain access to the switch by one of these methods:

- You can use Web Tools to perform a fast boot. When the switch comes up, the Telnet quota

is cleared. (For instructions on performing a fast boot with Web Tools, see the Web Tools

Administrator’s Guide.)

- If you have the required privileges, you can connect through the serial port, log in as

admin, and use the killTelnet command to identify and kill the Telnet processes without

disrupting the fabric.

• For accounts with an admin role, Fabric OS limits the number of simultaneous Telnet sessions

per switch to two. For more details on session limits, refer to Chapter 5, “Managing User

Accounts”.

Connecting to Fabric OS using Telnet

1. Connect through a serial port to the switch that is appropriate for your fabric:

• If Virtual Fabrics is enabled, log in using an admin account assigned the chassis-role

permission.

• If Virtual Fabrics is not enabled, log in using an account assigned to the admin role.

Stop bits 1

Flow control None

TABLE 2 Terminal port parameters (Continued)

Parameter Value