Specifications

ipv6 nd prefix
18-20 IPv6 Configuration
Defaults
Suppressiondisabled.
Mode
Routerinterfaceconfiguration:C3(su)‐>router(configif(Vlan1))#
Usage
Bydefault,transmissionofrouteradvertisementsisenabled.Thiscommanddisablessuch
transmissions.Usethenoformofthiscommandtore‐enabletransmission.
Example
Thisexampledisablesrouteradvertisementtransmission.
C3(su)->router(configif(Vlan 1))# ipv6 nd suppress-ra
ipv6 nd prefix
ThiscommandconfigurestheIPv6prefixestobeincludedinrouteradvertisementssentbythis
interface.
Syntax
ipv6 nd prefix {ipv6-prefix/prefix-length} [{valid-lifetime | infinite}
{preferred-lifetime | infinite}] [no-autoconfig] [off-link]
no ipv6 nd prefix {ipv6-prefix/prefix-length}
Parameters
ipv6‐prefix/prefix‐length The IPv6networkprefixandtheprefixlengthbeingconfigured.
TheprefixmustbeintheformdocumentedinRFC4291,withthe
addressspecifiedinhexadecimalusing16‐bitvaluesbetweencolons.
Theprefixlengthisadecimalnumberindicatingthenumberofhigh‐
ordercontiguousbits
oftheaddressthatcomprisethenetworkportion
oftheaddress.
valid‐lifetime|infinite (Optional)Specifiesthelengthoftimeinseconds(relativetothetime
thepacketissent)thattheprefixisvalidforthepurposeofon‐link
determination.
Thelifetimevaluecanrangefrom0to4,294,967,295.
Specifying
infinitemeansthattheprefixisalwaysvalid.
preferred‐lifetime|
infinite
(Optional)Specifiesthelengthoftimeinseconds(relativetothetime
thepacketissent)thataddressesgeneratedfromtheprefixbymeansof
statelessaddressautoconfigurationremainpreferred.
Thelifetimevaluecanrangefrom0to4,294,967,295.
Specifying
infinitemeansthattheprefixisalwayspreferred.
no‐autoconfig Unsetstheautonomousaddress‐configurationflag.Whennotset,
meansthatthisprefixcannotbeusedforautonomousaddress
configuration.Bydefault,theautonomousaddress‐configurationflagis
set/enabled.