Administrator Guide

Layer 3 Routing Commands 1798
• multicast—Configure the address that the interface uses to send the
router discovery advertisements to be 224.0.0.1, the all-hosts IP multicast
address. Use the no form of the command to use 255.255.255.255, the
limited broadcast address.
• holdtime seconds—Integer value in seconds of the holdtime field of the
router advertisement sent from this interface. (Range: 4-9000 seconds)
• maxadvertinterval seconds—Maximum time in seconds allowed between
sending router advertisements from the interface. (Range: 4 or the
minimum advertisement interval, whichever is greater, and 1800 seconds).
• 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.