Telnet or ssh sessions, Rules for telnet connections, Connecting to fabric os using telnet – Brocade Fabric OS Administrators Guide (Supporting Fabric OS v7.3.0) User Manual

Page 39

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Terminal port parameters (Continued)

TABLE 4

Parameter

Value

Flow control

None

• 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

You can connect to the Fabric OS through a Telnet or SSH connection or by using 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 38.

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 50.

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

Managing User Accounts

on page 133.

Connecting to Fabric OS using Telnet

Use the following procedure to connect to the 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.

2. Verify the switch’s network interface is configured and that it is connected to the IP network through

the RJ-45 Ethernet port.

Telnet or SSH sessions

Fabric OS Administrators Guide

39

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