Enterasys D2 D2G124-12P User Manual

D-Series CLI Reference 14-1
14
DHCP Server Configuration
ThischapterdescribesthecommandstoconfiguretheIPv4DHCPserverfunctionalityonaD‐
Seriesswitch.
DHCP Overview
DynamicHostConfigurationProtocol(DHCP)forIPv4isanetworklayerprotocolthat
implementsautomaticormanualassignmentofIPaddressesandotherconfigurationinformation
toclientdevicesbyservers.ADHCPservermanagesauser‐configuredpoolofIPaddressesfrom
whichitcanmakeassignmentsuponclientrequests.A
relayagentpassesDHCPmessages
betweenclientsandserverswhichareondifferentphysicalsubnets.
DHCP Server
DHCPserverfunctionalityallowstheD‐SeriesswitchtoprovidebasicIPconfiguration
informationtoaclientonthenetworkwhorequestssuchinformationusing theDHCPprotocol.
DHCPprovidesthefollowingmechanismsforIPaddressallocationbyaDHCPserver:
• Automatic—DHCPserverassignsanIPaddresstoaclientfor
alimitedperiodoftime(or
untiltheclientexplicitlyrelinquishestheaddress)fromadefinedpoolofIPaddresses
configuredontheserver.
•Manual—Aclient’sIPaddressisassignedbythenetworkadministrator,andDHCPisused
simplytoconveytheassignedaddresstotheclient.Thisismanagedby
meansof“static”
addresspoolsconfiguredontheserver.
TheamountoftimethataparticularIPaddressisvalidforasystemiscalledalease.TheD‐Series
maintainsaleasedatabasewhichcontainsinformationabouteachassignedIPaddress,theMAC
addresstowhichitisassigned,the
leaseexpiration,andwhethertheaddressassignmentis
dynamic(automatic)orstatic(manual).TheDHCPleasedatabaseisstoredinflashmemory.
InadditiontoassigningIPaddresses,theDHCPservercanalsobeconfiguredtoassignthe
followingtorequestingclients:
•Defaultrouter(s)
•DNSserver(s)anddomainname
•NetBIOSWINSserver(s)
andnodename
For information about... Refer to page...
DHCP Overview 14-1
Configuring General DHCP Server Parameters 14-3
Configuring IP Address Pools 14-10

Enterasys D2 D2G124-12P Specifications

General

Brand	Enterasys
Model	D2 D2G124-12P
Category	Network Router
Language	English