Switch User Manual

ipv6 ospf network
SecureStack C3 Configuration Guide 25-25
Defaults
Bydefault,MTUmismatchdetectionisenabled.
Mode
Routerinterfaceconfiguration:C3(su)‐>router(Config‐if(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.
Mode
Routerinterfaceconfiguration:C3(su)‐>router(Config‐if(Vlan1))#
Usage
Normally,thenetworktypeisdeterminedfromthephysicalIPnetworktype.Bydefault,all
EthernetnetworksareOSPFv3 typebroadcast.Similarly,tunnelinterfacesdefaulttopoint‐to‐
point.WhenanEthernetportisusedasasinglelargebandwidthIPnetworkbetweentworouters,
thenetworktypecanbepoint
‐to‐pointsincethereareonlytworouters.Usingpoint ‐to‐pointas
thenetworktypeeliminatestheoverheadoftheOSPFv3designatedrouterelection.Itisnormally
notusefultosetatunnel toOSPFv3networktypebroadcast.
broadcast Setsthenetworktypetobroadcast.
point‐to‐point Setsthenetwork
typetopoint‐to‐point.