Class: DHCP::ServerIdentifierOption

Inherits:
Option
  • Object
show all
Defined in:
lib/net/dhcp/options.rb

Overview

This option is used in DHCPOFFER and DHCPREQUEST messages, and may optionally be included in the DHCPACK and DHCPNAK messages. DHCP servers include this option in the DHCPOFFER in order to allow the client to distinguish between lease offers. DHCP clients use the contents of the ‘server identifier’ field as the destination address for any DHCP messages unicast to the DHCP server. DHCP clients also indicate which of several lease offers is being accepted by including this option in a DHCPREQUEST message.

The identifier is the IP address of the selected server.

The code for this option is 54, and its length is 4.

The default value is 0.0.0.0

Instance Attribute Summary

Attributes inherited from Option

#len, #payload, #type

Instance Method Summary collapse

Methods inherited from Option

#eql?, #pack, #to_a

Constructor Details

#initialize(params = {}) ⇒ ServerIdentifierOption

Returns a new instance of ServerIdentifierOption.



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# File 'lib/net/dhcp/options.rb', line 283

def initialize(params={})
  params[:type] = $DHCP_SERVIDENT
  params[:payload] = params.fetch(:payload, [0, 0, 0, 0])
  super(params)
end

Instance Method Details

#to_s ⇒ Object 



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# File 'lib/net/dhcp/options.rb', line 289

def to_s
  "Server Identifier = #{self.payload.join('.')}"
end