Specifications

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DHCP Overview

13-2 Configuring DHCP Server

TheamountoftimethataparticularIPaddressisvalidforasystemiscalledaleas e.The

SecureStackC3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

• Bootfile

•DHCPoptionsasdefinedby

RFC2132

DHCP Server Configuration Task List

Configurationtasksinclude:

1. ConfiguringIPaddresspoolsfordynamicIPaddressassignment.Theonlyrequiredstepsare

tonamethepoolanddefinethenetworknumberandmaskforthepool.Forexample:

set dhcp pool auto-pool network 192.168.1.0 255.255.255.0

2. Youcanlimitthescopeofaddressesassignedtoapoolfordynamicaddressassignmentwith

thesetdhcpexcludecommand.Upto128non‐overlappingaddressrangescanbeexcluded

ontheSecureStackC3.Forexample:

set dhcp exclude 192.168.1.88 192.168.1.100

3. Configuringstaticaddresspoolsformanualaddressassignment.Theonlyrequiredstepsareto

namethepool,configureeitherthehardwareaddressoftheclientortheclientidentifier,and

configuretheIPaddressandmaskforthemanualbinding.Forexample:

set dhcp pool static-pool hardware-address 0011.2233.4455

set dhcp pool static-pool host 192.168.1.200 255.255.255.0

4. SettingotherDHCPserverparameterssuchasthenumberofpingpacketstobesentbefore

assigninganIPaddress,orenablingconflictlogging.

5. EnablingtheDHCPserver.

“ConfiguringGeneralDHCPServerParameters”onpage 13‐3describesthecommandsusedto

enable/disabletheDHCPserver,configureexcludedaddressranges,andset

otherserver

parameters.

“ConfiguringIPAddressPools”onpage 13‐11describesthecommandsusedtoconfigureand

displayaddresspools.

Note: A total of 16 address pools, dynamic and/or static, can be configured on the SecureStack C3.