Users Guide

Layer 3 Routing Commands 1828
• minadvertinterval seconds—Minimum time in seconds allowed between
sending router advertisements from the interface. (Range: 3 to value of
maximum advertisement interval in seconds)
• preference number—Preference of the address as a default router address,
relative to other router addresses on the same subnet. (Range: -
2147483648 to 2147483647)
• address address—IP address for router discovery advertisements. (Range:
224.0.0.1 [all-hosts IP multicast address] or 255.255.255.255 [limited
broadcast address])
Default Configuration
• Router discovery is disabled by default.
• 1800 seconds is the default value for holdtime.
• 600 seconds is the default value for maxadvertinterval.
• The minadvertinterval default value is 450.
• The preference default value is 0.
• IP address 224.0.0.1 is the default configuration for address.
Command Mode
Interface Configuration (VLAN) mode
User Guidelines
This command has no user guidelines.
Example
The following example enables router discovery on the selected interface.
console(config)#interface vlan 15
console(config-if-vlan15)#ip irdp
ip irdp holdtime
Use the ip irdp holdtime command in Interface Configuration mode to
configure the value, in seconds, of the holdtime field of the router
advertisement sent from this interface. Use the no form of the command to
set the time to the default value.