Specifications

ipv6 nd prefix
SecureStack C3 Configuration Guide 18-21
Defaults
•Valid‐lifetime—604 800
• Preferred‐lifetime—2592000
• Autoconfig—enabled
•On‐link—enabled
Mode
Routerinterfaceconfiguration:C3(su)‐>router(configif(Vlan1))#
Usage
RefertoRFC2461, “NeighborDiscoveryforIPVersion6,”formoreinformationaboutrouter
advertisements.
Routeradvertisementscontainalistofprefixesusedforon‐linkdeterminationand/or
autonomousaddressconfiguration.Flagsassociatedwiththeprefixesspecifytheintendedusesof
aparticularprefix.Hostsusetheadvertisedon‐link
prefixestobuildandmaintainalistthatis
usedindecidingwhenapacket’sdestinationison‐linkorbeyondarouter.Hostscanusethe
advertisedautoconfigurationprefixestoperformautonomous(stateless)addressconfiguration,if
statelessconfigurationisallowed(seeipv6ndmanaged‐config‐flag).
Theno
formofthiscommandremovestheprefixfromthelistofprefixesadvertisedinrouter
advertisementsbythisinterface.
Example
Thisexampleconfiguresaprefixthatcanbeusedforbothon‐linkdeterminationand 
autoconfiguration,using thedefaultvaluesforvalidlifetimeandpreferredlifetime.
C3(su)->router(configif(Vlan 1))# ipv6 nd prefix 2001:0db8:4444:5555/64
off‐link Unsetstheon‐linkflag.Whennotset,meansthatthisprefixcannotbe
usedforon‐linkdetermination.Bydefault,theon‐linkflagisset/
enabled.