Specifications

interface
SecureStack C3 Configuration Guide 15-3
interface
UsethiscommandtoconfigureinterfacesforIProuting.
Syntax
interface vlan vlan-id | loopback loop-id
Parameters
Defaults
None.
Mode
Routerglobalconfigurationmode:C3(su)‐>router(Config)#
Usage
Thiscommandenablesinterfaceconfigurationmodefromglobalconfigurationmode,and,ifthe
interfacehasnotpreviouslybeencreated,thiscommandcreatesanewroutinginterface.For
detailsonconfigurationmodessupportedbytheSecureStackC3deviceandtheiruses,referto
Table 14‐2in“EnablingRouterConfigurationModes”on
page 14‐3.
VLANsmustbecreatedfromtheswitchCLIbeforetheycanbeconfiguredforIProuting.For
detailsoncreatingVLANsandconfiguringthemforIP,referto“EnablingRouterConfiguration
Modes”onpage 14‐3.
EachVLANinterfacemustbeconfiguredforroutingseparatelyusingtheinterfacecommand.
To
endconfigurationononeinterfacebeforeconfiguringanother,typeexitatthecommandprompt.
Enablinginterfaceconfigurationmodeisrequiredforcompletinginterface‐specificconfiguration
tasks.Foranexampleofhowthesecommandsareused,referto“Pre‐RoutingConfiguration
Tasks”onpage 14‐1.
Aloopbackinterfaceisalways
expectedtobeup.Thisinterfacecanprovidethesourceaddressfor
sentpacketsandcanreceivebothlocalandremotepackets.Theloopbackinterfaceistypically
usedbyroutingprotocols.
EachSecureStackC3systemcansupportupto256routinginterfaces.Eachinterfacecanbe
configuredfortheRIPand/or
OSPFroutingprotocols.
Examples
ThisexampleshowshowtoenterconfigurationmodeforVLAN1:
C3(su)->router#configure
C3(su)->router(Config)#interface vlan 1
C3(su)->router(Config-if(Vlan 1))#
vlanvlan‐id Specifiesthenumberofthe VLANinterfacetobeconfiguredforrouting.
ThisinterfacemustbeconfiguredforIProutingasdescribedin“Pre‐
RoutingConfigurationTasks”onpage 14‐1.
loopbackloop‐id Specifiesthenumberoftheloopbackinterfacetobeconfiguredforrouting.
Thevalueof
loop‐idcanrangefrom0to7.
Note: For information about configuring tunnel interfaces, see “Configuring Tunnel Interfaces” on
page 15-8.