Reference Guide

By default, the root user is disabled on the serial ports. Use the following steps to enable the root user.
1. Login as admin on the serial port.
2. Enable the root account using the userconfig --change root -e yes command.
3. Login as root and change the default password because login to the root with default password is not supported.
4. To enable root access via Telnet or SSH, run the rootaccess --set all command
.
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 51.
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 Telnet sessions are active; if you do, the existing Telnet sessions will hang and
your next attempt to log in will fail. 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, refer to 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 stop 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 four like other
users. For more details on session limits, refer to Managing User Accounts on page 145.
∙ The login command creates nested sessions and hence only a maximum of 5 logins are allowed from the same session, after
which the following session limit message is displayed. The killtelnet command kills only the latest login, but leaves the others
open.
switch:root> login
sw0 login: root
Password:
Same session login limit reached. Logout before next login <<<<<<<<<<<<<<<
Disclaimer for Root Account Usage!
This Fibre Channel switch is equipped with the Root account that
is intended for diagnostics and debugging purposes solely by the
Equipment vendor's trained engineers. Improper use of functionality
made available through the Root account could cause significant harm
and disruption to the operation of the SAN fabric.
Your use of the functionality made available through the Root account
is at your sole risk and you assume all liability resulting from such
use. The Equipment vendor shall have no liability for any losses or
damages arising from or relating to the use of the Root account
(and the functionality enabled thereby) by anyone other than
the Equipment vendor's authorized engineers.
Proceeding with the usage of this switch as the Root user explicitly
indicates your agreement to the terms of this disclaimer.
Connecting to Fabric OS using Telnet
Use the following procedure to connect to the Fabric OS using Telnet:
Performing Basic Configuration Tasks
Brocade Fabric OS Administration Guide, 8.0.1
53-1004111-02 39