Switch User Manual

passive-interface
20-8 IPv4 Routing Protocol Configuration
Mode
Routerconfiguration:C3(su)‐>router(Config‐router)#
Usage
Splithorizonpreventsanetworkfrombeingadvertisedoutthesameinterfaceitwasreceivedon.
Thisfunctionisdisabledbydefault.
Example
ThisexampleshowshowtodisablesplithorizonpoisonreverseforRIPpacketstransmittedon
theVLAN1interface:
C3(su)->router(Config)#router rip
C3(su)->Router1(Config-router)#no split-horizon poison
passive-interface
UsethiscommandtopreventRIPfromtransmittingupdatepacketsonaninterface.Thenoform
ofthiscommanddisablespassiveinterface.
Syntax
passive-interface vlan vlan-id
no passive-interface vlan vlan-id
Parameters
Defaults
None.
Mode
Routerconfiguration:C3(su)‐>router(Config‐router)#
Usage
ThiscommanddoesnotpreventRIPfrommonitoringupdatesontheinterface.
Example
ThisexampleshowshowtosetVLAN2asapassiveinterface.NoRIPupdateswillbetransmitted
onVLAN2:
C3(su)->router(Config)#router rip
C3(su)->router(Config-router)#passive-interface vlan 2
vlanvlan‐id SpecifiesthenumberoftheVLANtomakeapassiveinterface.ThisVLAN
mustbeconfiguredforIProutingasdescribedin“Pre‐Routing
ConfigurationTasks”onpage18‐1.