Configuring IP Routing 1081Configuring Router Discovery (IRDP)Beginning in Privileged EXEC mode, use the following commands toconfigure IRDP settings.Command Purposeconfigure Enter global configuration mode.interfaceinterface Enter interface configuration mode for the specifiedVLAN routing interface. Theinterface variable includesthe interface type (vlan) and number, for example vlan100.ip irdp Enable IRDP on the interface.ip irdp addressip-address Configure the address that the interface uses to send therouter discovery advertisements.The allowed addresses are 224.0.0.1 (all-hosts IPmulticast address) or 255.255.255.255 (limited broadcastaddress)ip irdp holdtimeseconds Configure the value of the holdtime field of the routeradvertisement sent from this interface.ip irdp maxadvertintervalsecondsConfigure the maximum time allowed between sendingrouter advertisements from the interface.ip irdp minadvertintervalsecondsConfigure the minimum time allowed between sendingrouter advertisements from the interface.ip irdp preferenceinteger Configure the preference of the address as a defaultrouter address relative to other router addresses on thesame subnet.exit Exit to Global Config mode.exit Exit to Privileged EXEC mode.show ip irdp [vlanvlan-id] View the router discovery information for all interfaces,or for a specified interface.
