Dhcp auto-deployment enable – Brocade Network OS Command Reference v4.1.0 User Manual

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Network OS Command Reference

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dhcp auto-deployment enable

Enables DHCP auto-deployment on the switch.

Synopsis

dhcp auto-deployment enable

Operands

None

Defaults

Disabled

Command Modes

Privileged EXEC mode

Description

Use this command to enable DHCP auto-deployment on the switch.

Usage Guidelines

This command will cause a cold/disruptive reboot and will require that Telnet, secure Telnet, or
SSH sessions be restarted.

Scenario 1: When you enable DHCP auto-deployment and the system starts to reboot, the DAD
process is triggered after configuration replay is complete.

In the case of dual Management Moddule (MM) chassis, the DAD process waits for the dual MMs
to be in sync before starting the requested firmware download. However, if you manually issue
firmwaredownload –sb during this period (after DAD is triggered and before the MM is in sync),
DHCP auto-deployment will fail because the previous firmware download takes precedence. If you
manually issue firmwaredownload –sb before DAD is triggered, DHCP auto-deployment will fail for
the same reason.

Scenario 2: You issue the command to enable DAD (answer “Yes” when prompted), but before the
system reboot, there is an HA failover. DAD will be cancelled. You must enable DHCP
auto-deployment from the new active switch.

Scenario 3: You issue the command to enable DAD, but after the system reboot is invoked,
takeover occurs (the previous standby switch becomes the new active switch), DHCP
auto-deployment will proceed.

Scenario 4: You manually issue the firmwaredownload command, but before the firmware
download is completed, you enable DAD from the CLI and answer “Yes” when prompted to reboot
the switch. When the switch boots up, even if the DAD process detects that the firmware download
is needed, it will fail during the sanity check because the previous incomplete firmware download
takes precedence. DHCP auto-deployment will fail.

Examples

None