APC NBRK0200 Dhcp Server, How to set up option, How to disable the cookie requirement

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DHCP Server

The DHCP server must be set up with an encapsulated APC cookie in the Vendor Specific Information option (DHCP option 43); otherwise, DHCP offers will be ignored by the Rack Monitor 200. If you do not want to use option 43, disable the cookie requirement (see “How to disable the cookie requirement” on this page).

For complete details on Rack Monitor 200 communication with a DHCP server, see “TCP/IP and Communication Settings” in the NetBotz Rack Monitor 200 User’s Guide. For details on how to access the user’s guide, see “Additional Documentation” on page 1.

How to set up option 43

The Main Module (NetBotz Rack Monitor 200) requires option 43 in a DHCP response to determine whether the DHCP response is valid. This option contains up to two APC-specific options in a TAG/ LEN/DATA format: the APC Cookie and the Boot Mode Transition.

• APC Cookie. Tag 1, Len 4, Data “1APC”

Option 43 communicates to the Main Module that a DHCP server is configured to service APC devices. By default, the DHCP response must contain the APC Cookie for the Main Module to accept the lease.

Following, in hexadecimal format, is an example of a Vendor Specific Information option that contains the APC cookie:

Option 43 = 0x01 0x04 0x31 0x41 0x50 0x43

• Boot Mode Transition. Tag 2, Len 1, Data 1/2

Boot Mode Transition enables or disables the Main Module option Remain in DHCP & BOOTP mode after accepting TCP/IP settings, which is disabled by default.

A data value of 1 enables the option Remain in DHCP & BOOTP mode after accepting TCP/IP settings. When the Main Module reboots, it will request its network assignment first from a BOOTP server and then, if necessary, from a DHCP server.

A data value of 2 disables the option Remain in DHCP & BOOTP mode after accepting TCP/IP settings. The TCP/IP Configuration setting switches to DHCP when the Main Module accepts this DHCP response. Thereafter, whenever the Main Module reboots, it will request its network assignment from a DHCP server only.

Following, in hexadecimal format, is an example of the Vendor Specific Information option that contains the APC cookie and the data value to disable the Remain in DHCP & BOOTP mode after accepting TCP/IP settings:

Option 43 = 0x01 0x04 0x31 0x41 0x50 0x43 0x02 0x01 0x01

How to disable the cookie requirement

1.Access the control console through the serial port on the Rack Monitor 200. (See “How to access the control console” on page 19.)

2.Follow the menu path Network > TCP/IP > Boot Mode > DHCP only > Advanced > DHCP Cookie Is > Not required to accept offer.

3.Enter Accept Changes.

NetBotz Rack Monitor 200 Installation and Quick Configuration Manual

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Contents Installation Quick Configuration Manual Manual em Português está disponível no CD-ROM em anexo Contents Access the Rack Monitor Additional Documentation IntroductionProduct Description Document OverviewInventory Receiving InspectionInfraStruXure-certified Additional OptionsFront InstallationPhysical Description RearDescription Toolless peg-mount installation How to Install the Rack MonitorRack-mount installation Power cord and network cable connections How to Install the Temperature/Humidity Sensor How to Connect Sensors to Universal Sensor Ports How to Connect an Alarm Beacon and Other Optional Devices How to Cascade Devices to A-Link Ports How to Wire to the Modbus Interface Server type Procedure Quick ConfigurationHow to disable the cookie requirement How to set up optionDhcp Server How to Update the Bootptab File Important Information about the Default GatewayHow to Use the APC Device IP Configuration Wizard Use apc for both User Name and Password How to Use ARP, Ping, and TelnetControl Console How to access the control consoleWeb Interface Access the Rack MonitorTelnet and SSH Simple Network Management Protocol Snmp Modbus How to Recover from a Lost PasswordNetBotz Rack Monitor 200 NBRK0200 SpecificationsSystem Specifications Temperature/Humidity Sensor AP9335THNon-transferable warranty Exclusions Warranty and Life SupportTwo-Year Factory Warranty Terms of warrantyWarranty claims Obtaining service General policy Life Support PolicyExamples of life-support devices Page Page Page Taiwan-BSMI Radio Frequency InterferenceCanada-ICES Japan-VCCI2008 990-3283-001