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58 Zero-touch, bare-metal server provisioning using the Dell EMC iDRAC with Lifecycle Controller Auto Config
9 Glossary
DHCP scope
option
A Dynamic Host Configuration Protocol (DHCP) server provides the ability to distribute information to
clients in a pool of IP addresses that are assigned by the server. This pool of IP addresses is
commonly referred to as a DHCP scope.
For example, 192.168.0.100 to 192.168.0.200 is a pool, and scope options can be distributed to clients
in this pool.
iDRAC
The integrated Dell Remote Access Controller (iDRAC) with Lifecycle Controller is an embedded
device in PowerEdge servers that helps IT administrators manage, monitor, update, and deploy
PowerEdge servers.
PERC
PowerEdge Expandable RAID Controller.
RACADM
This is the command line interface (CLI) to the iDRAC. It can be invoked from the Host of the iDRAC
(local RACADM), a remote laptop or workstation (remote RACADM), or by using a secure shell (SSH)
tunnel to log in to the IP address of the iDRAC and running directly on the iDRAC (firmware
RACADM).
WS-Man
WS-Man is a network transport service that enables a user to access a number of Common
Information Model (CIM) data access and methods supported by the target platform. WS-Man can be
scripted by using command line interfaces (CLI) such as WinRM on Microsoft® Windows® systems,
and WS-Man CLI on Linux systems.
Vendor-specific
DHCP scope
options
RFC 2132 defines two DHCP Options that are relevant to vendor specific options—Option 60 and
Option 43.
DHCP Option 60 is the Vendor Class Identifier (VCI). The VCI is a text string that uniquely identifies a
type of vendor device. In this case this identifier is “iDRAC”. On the DHCP server, the vendor specific
information is mapped to VCI text strings. When the DHCP server sees a recognizable VCI in a DHCP
discover from a DHCP client, it returns the mapped vendor specific information in its DHCP offer to the
client as DHCP Option 43.
DHCP Option 43 is defined in each DHCP pool (scope) that offers IP addresses to the LAPs.