APC Switched Rack Power Distribution Unit (PDU) manual Dhcp & Bootp boot process

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USER’S GUIDE switched rack pdu

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DHCP & BOOTP boot process

When Boot mode is set to its default DHCP & BOOTP setting, the following occurs when the Switched Rack PDU is started or reset:

1.The Switched Rack PDU makes up to five requests for its network assignment from any BOOTP server. If a valid BOOTP response is received, the PDU starts the network services and sets Boot mode to BOOTP Only.

2.If the Switched Rack PDU fails to receive a valid BOOTP response after five BOOTP requests, the PDU makes up to five requests for its network assignment from any DHCP server. If a valid DHCP response is received, the PDU starts the network services and sets Boot mode to DHCP Only.

To configure the Switched Rack PDU so that it always uses the DHCP & BOOTP setting for Boot mode, enable the

Remain in DHCP & BOOTP mode after accepting TCP/IP settings option, which is disabled by default.

See Switched Rack PDU settings.

3.If the Switched Rack PDU fails to receive a valid DHCP response after five DHCP requests, it repeats BOOTP and DHCP requests until it receives a valid network assignment. First it sends a BOOTP request every 32 seconds for 12 minutes, then it sends one DHCP request with a time-out of 64 seconds, and so forth.

If a DHCP server responds with an invalid offer (e.g., without the APC Cookie), the Switched Rack PDU accepts the lease from that server on the last request of the sequence and immediately releases that lease. This prevents the DHCP server from reserving the IP Address associated with its invalid offer.

For more information on what a valid response requires, see DHCP response options.

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Contents Contents Web Interface Network Menu Index Product Description Features of the PDUIntroduction Initial setup Overview Access ProceduresAccess priority for logging on Types of user accounts How to Recover From a Lost Password Upgrading Firmware XmodemUSER’S Guide switched rack pdu Front Panel Single-phaseThree-phase See Status LED Condition Description Link-RX/TX 10/100 LEDStatus LED Load indicator LED Network interface watchdog mechanism Watchdog FeaturesResetting the network timer Control Console How to Log OnRemote access to the control console Local access to the control console Information and status fields Main ScreenExample main screen System Menu Main screen status fields Control Console Menus Menu structureNetwork option Main menuDevice Manager option System option Web Interface Supported Web browsers URL address formats Summary StatusQuick status tab Navigation menuNavigation Menu Events menu Network menu System menuSelecting a menu to perform a task Help menu Links menu Device Manager Menus Outlet SettingsPower On Delays Control outletsConfigure outlet settings and outlet name For Power Off DelaySelect Outlet Control/Config from the Device Manager menu Setting DescriptionSwitched Rack PDU Settings Configure Load ThresholdsUSER’S Guide switched rack pdu Configure Device Settings Control consoleEvent-Related Menus IntroductionMenu options Event Log Logged events Web interfaceControl console How to use FTP to retrieve log files USER’S Guide switched rack pdu Event Actions Web Interface Only Snmp traps action Severity levelsEvent log action Email action Definition Trap receiver settingsEvent Recipients Mail Feature Smtp settings DNS serversEmail Recipients USER’S Guide switched rack pdu Event List How to Configure Individual EventsDetailed Event Action Configuration Code Description SeveritySystem Menu Menu options Administrator and Device Manager User Option SettingsSetting Definition User ManagerOutlet Manager Identification Date & TimeUSER’S Guide switched rack pdu Tools Action DefinitionLinks Web interface APC’s Web Site , Testdrive Demo , and Remote MonitoringAbout System Network Menu TCP/IP DNSTCP/IP For more information on using Bootp and DHCP, see Boot Mode DNS Ping utility control console FTP Server, and Telnet & Web options Ftp Telnet Http//159.215.12.11432740Snmp USER’S Guide switched rack pdu Boot Mode Dhcp & Bootp boot process See Switched Rack PDU settingsDhcp Configuration Settings Switched Rack PDU settingsUSER’S Guide switched rack pdu Dhcp response options APC Cookie. Tag 1, Len 4, Data 1APCBoot Mode Transition. Tag 2, Len 1, Data 1/2 USER’S Guide switched rack pdu User names, passwords, community names Security FeaturesPlanning and implementing security features SecuritySummary of access methods Interface Security AccessFirewalls AuthenticationAuthentication versus encryption USER’S Guide Product Information Warranty and ServiceLimited warranty Warranty limitations Obtaining serviceUSER’S Guide switched rack pdu Examples of life-support devices Life-Support PolicyGeneral policy Index APC OSFTP Smtp Xmodem APC Worldwide Customer Support Copyright