APC AP8861, AP8886, AP88XX manual Dhcp response options, APC Cookie. Tag 1, Len 4, Data 1APC

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DHCP response options

Each valid DHCP response contains options that provide the TCP/IP settings that the Rack PDU needs to operate on a network, and other information that affects the operation of the Rack PDU.

Vendor Specific Information (option 43). The Rack PDU uses this option in a DHCP response to determine whether the DHCP response is valid. This option contains an APC-specific options in a TAG/ LEN/DATA format, called the APC Cookie. This is disabled by default.

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

Option 43 communicates to the Rack PDU that a DHCP server is configured to service devices.

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

TCP/IP options. The Rack PDU uses the following options within a valid DHCP response to define its TCP/IP settings. All of these options except the first are described in RFC2132.

•IP Address (from the yiaddr field of the DHCP response, described in RFC2131): The IP address that the DHCP server is leasing to the Rack PDU.

•Subnet Mask (option 1): The Subnet Mask value that the Rack PDU needs to operate on the network.

•Router, i.e., Default Gateway (option 3): The default gateway address that the Rack PDU needs to operate on the network.

•IP Address Lease Time (option 51): The time duration for the lease of the IP Address to the Rack PDU.

•Renewal Time, T1 (option 58): The time that the Rack PDU must wait after an IP address lease is assigned before it can request a renewal of that lease.

•Rebinding Time, T2 (option 59): The time that the Rack PDU must wait after an IP address lease is assigned before it can seek to rebind that lease.

Other options. The Rack PDU also uses these options within a valid DHCP response. All of these options except the last are described in RFC2132.

•Network Time Protocol Servers (option 42): Up to two NTP servers (primary and secondary) that the Rack PDU can use.

•Time Offset (option 2): The offset of the Rack PDU's subnet, in seconds, from Coordinated Universal Time (UTC).

•Domain Name Server (option 6): Up to two Domain Name System (DNS) servers (primary and secondary) that the Rack PDU can use.

•Host Name (option 12): The host name that the Rack PDU will use (32-character maximum length).

•Domain Name (option 15): The domain name that the Rack PDU will use (64-character maximum length).

•Boot File Name (from the file field of the DHCP response, described in RFC2131): The fully qualified directory-path to a user configuration file (.ini file) to download. The siaddr field of the DHCP response specifies the IP address of the server from which the Rack PDU will download the .ini file. After the download, the .ini file is used as a boot file to reconfigure the settings.

Metered Rack PDU User Guide

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Contents User Guide Contents Log on to the Command Line Interface Web Interface Logs Administration Notification Device IP Configuration Wizard Troubleshooting Product Features IntroductionAccess Priorities for Logging on Types of User AccountsWatchdog Features Network Port SharingGetting Started Establish Network Settings TCP/IP configuration methodsDhcp and Bootp configuration INI file utilityOption 43 = 01 04 31 41 50 Command Line Interface Recovering from a Lost Password Rack PDU Front Panel FunctionFunction Display Tree Example Display Tree Example Load indicator LED Network Status LEDCondition Description 10/100 LEDCommand Line Interface About the Command Line InterfaceLog on to the Command Line Interface Remote access to the command line interfaceLocal access to the command line interface About the Main ScreenUsing the Command Line Interface IPv4 IPv6 Description OnlyCommand Syntax DescriptionCommand Response Codes Code MessageNetwork Management Card Command Descriptions AlarmcountAbout Option Arguments DescriptionClrrst BootOption Argument Description Console Date DeleteArgument Description DirDns EventlogExit FormatOption Argument Definition HelpNetstat NtpPing PortSpeedPrompt QuitReboot RadiusSystem ResetToDefSnmp, snmpv3 Tcpip Tcpip6User WebXferINI XferStatusDevice Command Descriptions Network Port Sharing CommandsBkLowLoad BkNearOverDevLowLoad BkOverLoadBkReading DevNearOver DevOverLoadDevReading Argument DefinitionHumReading HumLowHumMin PhOverLoad PhLowLoadPhNearOver PhReading ProdInfo SensorNameTempReading TempHighTempMax Whoami Logging On to the Web Interface Web InterfaceSupported Web Browsers Error Message Browser Cause of the Error URL address formatsWeb Interface Features Symbol DescriptionTabs Device status iconsOther Web interface features Quick LinksGroup Control using Network Port Sharing Network Port Sharing on the Web InterfaceMetered Rack PDU User Guide Overview view Alarm Status viewAbout the Home Tab Configuring Load Thresholds Device ManagementAbout the Device Manager Tab Viewing the Load Status and Peak LoadConfigure the Name and Location of the Rack PDU Resetting Peak Load and kWhConfigure Temperature and Humidity Sensors EnvironmentEvent log LogsUse the Event and Data Logs Example event log Rack PDU 4 Device low load Data log Path Logs Data optionsParameter Description How to use FTP or SCP to retrieve log files Scp username@hostnameoripaddressdata.txt ./data.txtAdministration Security Setting user accessAuthentication Local UsersRadius Setting Definition Radius Configure the Radius Server Summary of the configuration procedure Configuring a Radius server on Unix with shadow passwords Supported Radius serversInactivity Timeout Administration Network Features TCP/IP and Communication SettingsTCP/IP settings Setting DescriptionDhcp response options APC Cookie. Tag 1, Len 4, Data 1APCPort Speed Ping ResponseDNS Query Type Selected Query Question to UseStatus WebOption Description Console Telnet 152.214.12.1145000 telnet 152.214.12.114Snmp SNMPv1 SNMPv3 FTP Server Administration Notification Configuring event actionsEvent Actions Types of notificationMetered Rack PDU User Guide Active, Automatic, Direct Notification Mail notificationSend a test message to a configured recipient Snmp traps Snmp Trap TestSyslog Remote Monitoring ServiceSetting Definition Informational is mapped to Info Administration General Options IdentificationSet the Date and Time ModeUse an .ini File Daylight savingEvent Log and Temperature Units Reset the Rack PDUChange the default temperature scale Color-code event log textConfigure Links About the Rack PDUUse the Wizard Device IP Configuration WizardCapabilities, Requirements, and Installation Select Locally through the serial port, and click Next Configure or reconfigure the TCP/IP settings locallySelect Remotely over the network, and click Next How to Export Configuration Settings Summary of the procedureContents of the .ini file Retrieving and Exporting the .ini FileDetailed procedures Ftp open ipaddress Upload Event and Error Messages Event and its error messagesMessages in config.ini Errors generated by overridden valuesHow to Upgrade Firmware File TransfersFirmware File Transfer Methods Benefits of upgrading firmwareUsing the Firmware Upgrade Utility Use FTP or SCP to upgrade one Rack PDUUse Xmodem to upgrade one Rack PDU Using a USB flash drive to upgrade one Rack PDU How to upgrade multiple Rack PDUsUsing the Firmware Upgrade Utility for multiple upgrades Firmware Module Binary File Verifying Upgrades and Updates Verify the version numbers of installed firmwareVerify the success or failure of the transfer Last Transfer Result codesProblem Solution TroubleshootingRack PDU Access Problems Appendix a List of Supported Commands Network Management Card Command DescriptionsSets manual IPv6 address Device Command Descriptions APC Worldwide Customer Support 990-3429D-001 10/2012
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