Specifications

ipv6 ospf mtu-ignore
20-26 OSPFv3 Configuration
ipv6 ospf mtu-ignore
ThiscommanddisablesOSPFv3maximumtransmissionunit(MTU)mismatchdetection.
Syntax
ipv6 ospf mtu-ignore
no ipv6 ospf mtu-ignore
Parameters
None.
Defaults
Bydefault,MTUmismatchdetectionisenabled.
Mode
Routerinterfaceconfiguration:C3(su)‐>router(configif(Vlan1))#
Usage
OSPFDatabaseDescriptionpacketsspecifythe sizeofthelargestIPpacketthatcanbesent
withoutfragmentationontheinterface.WhenarouterreceivesaDatabaseDescriptionpacket,it
examinestheMTUadvertisedbytheneighbor.Bydefault,iftheMTUislargerthantheroutercan
accept,theDatabase
DescriptionpacketisrejectedandtheOSPFadjacencyisnotestablished.
UsethiscommandtopreventtheOSPFv3routerprocessfromcheckingwhetherneighborsare
usingthesamemaximumtransmissionunit(MTU)onacommoninterfa c ewhenexchanging
DatabaseDescriptionpackets.
UsethenoformofthiscommandtoenableMTU
mismatchdetection.
Example
ThisexampledisablesMTUmismatchdetectiononrouterinterfaceVLAN7.
C3(su)->router(Config)# interface vlan 7
C3(su)->router(config-if(Vlan 7))# ipv6 ospf mtu-ignore
ipv6 ospf network
ThiscommandchangesthedefaultOSPFv3networktypefortherouterinterface.
Syntax
ipv6 ospf network {broadcast | point-to-point}
no ipv6 ospf network {broadcast | point-to-point}
Parameters
Defaults
Defaultnetworktypeisbroadcast.
broadcast Setsthenetworktypetobroadcast.
point‐to‐point Setsthenetworktypetopoint‐to‐point.