DHCP Commands
XSR CLI Reference Guide 15-101

next-server

Thiscommandspecifiestheserverfromwhichtheinitialbootfilewillbeloaded.Theservercan
bedesignatedeitherbyIPaddressorhostname.
Syntax
next-server server [hostname | ip_address]
Syntax of the “no” Form
Usethenoformofthiscommandtoremovethenextserver:
no next-server server [hostname | ip_address]
Mode
Anyofthefollowingcommandmodesareavailable:
DHCPpoolconfiguration:XSR(config-dhcp-pool)#
DHCPhostconfiguration:XSR(config-dhcp-host)#
DHCPclientclassconfiguration:XSR(config-dhcp-class)#
Example
ThefollowingexamplespecifiestheIPaddressofanextserver:
XSR(config-dhcp-pool)next-server 192.168.57.4

option

ThiscommandconfiguresDHCPserveroptions/extensions.DHCPServerprovidesaframework
forpassingconfigurationdatatohostsonaTCP/IPnetwork.Configurationvaluesandother
controldataarecarriedintaggeddataitemsstoredintheoptionsfieldoftheDHCPmessage.
Thedataitemsarealsocalledoptionsorclientextensions.ThecurrentsetofXSRsupported
DHCPoptionsandBOOTPvendorextensionsaredescribedinTable 151onpage 102and
generallyinRFC2132.DefaultvaluesaredefinedinRFC1122.
Dependingontheclientconfigurationinheritance,thecommandshouldbeusedfromtheproper
mode.Ifitisspecifiedfrommultiplemodes,anoverridemechanismchoosestheinnermostconfig
value,withhostasinnermost,thenclientclassandpoolasthemostgeneral.
Syntax
option code {ascii string | hex string | ip address}
hostname Designation of the server by name.
ip_address Designation of the server by IP address.
code DHCP option code.
ascii string An ASCII character string. Strings containing space must be enclosed with quotes.
The following options are set with an ASCII string: 12, 14, 15, 17, 18, 40, 47, and 64.