Brocade FastIron SX Series Chassis Hardware Installation Guide - Manual (Page 83)

Recovering from a lost password
By default, the CLI does not require passwords. However, if someone has configured a password for
the device but the password has been lost, you can regain super-user access to the device using the
following procedure.
NOTE
Recovery from a lost password requires direct access to the serial port and a system reset.
To recover from a lost password, complete the following steps.
1. Start a CLI session over the serial interface to the Brocade device.
2. Reboot the device.
3. While the system is booting, before the initial system prompt appears, enter b to enter the boot
monitor mode.
4. Enter no password at the prompt. (You cannot abbreviate this command.)
5. Enter boot system flash primary at the prompt. This command causes the device to bypass the
system password check.
6. After the console prompt reappears, assign a new password.
Configuring IP addresses
You must configure at least one IP address using the serial connection to the CLI before you can
manage the system using the other management interfaces. In addition, Brocade routers require an IP
subnet address for the subnet in which you plan to place them in your network.
IPv4 devices
Brocade IPv4 devices support both classical IP network masks (Class A, B, and C subnet masks, and
so on) and Classless Interdomain Routing (CIDR) network prefix masks:
• To enter a classical network mask, enter the mask in IP address format. For example, enter
"10.x.x.x 255.255.255.0" for an IP address with a Class-C subnet mask.
• To enter a prefix number for a network mask, enter a forward slash ( / ) and the number of bits in
the mask immediately after the IP address. For example, enter "10.x.x.x/24" for an IP address that
has a network mask with 24 significant ("mask") bits.
By default, the CLI displays network masks in classical IP address format (example: 255.255.255.0).
You can change the display to the prefix format. Refer to the FastIron Ethernet Switch Layer 3
Configuration Guide for more information.
Configuring IPv4 management interface while running Layer 3 software
Before attaching equipment to a Brocade router, you must assign an interface IP address to the subnet
on which the router will be located. You must use the serial connection to assign the first IP address.
For subsequent addresses, you also can use the CLI through Telnet.
By default, you can configure up to 24 IP interfaces on each port, virtual interface, and loopback
interface. You can increase this amount to up to 64 IP subnet addresses per port by increasing the size
of the subnet-per-interface table. Refer to the FastIron Configuration Guide for more information.
Recovering from a lost password
Brocade FastIron SX Series Chassis Hardware Installation Guide 81
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