ip irdp (Interface)

Enables ICMP Router Discovery Protocol (IRDP) on an interface and configures IRDP parameters.
Syntax
ip irdp {broadcast | multicast } [ holdtime second s] [ minadvertinterval seconds ] [ maxadvertinterval seconds ] [ preference number ]
no ip irdp {broadcast | multicast } [ holdtime second s] [ minadvertinterval seconds ] [ maxadvertinterval seconds ] [ preference number ]
Command Default

IRDP is not enabled.

Parameters
broadcast
Configures the Layer 3 switch to send the Router Advertisement as IP broadcasts. This is the default.
multicast
Configures the Layer 3 switch to send the Router Advertisement as multicast packets addressed to IPmulticast group 224.0.0.1.
holdtime seconds
Specifies how long a host that receives a Router Advertisementfrom the Layer 3 switch should consider the advertisement to be valid. The value must be greater than the value of themaxadvertinterval parameter and cannot be greater than 9000. The default is three times the valueof the maxadvertinterval parameter.
minadvertinterval seconds
Specifies the minimum amount of time the Layer 3 switch can waitbetween sending Router Advertisements. The default is three-fourths (0.75) the value of themaxadvertinterval parameter.
maxadvertinterval seconds
Specifies the maximum amount of time the Layer 3 switch waits between sending Router Advertisements. You can specify a value from 1 to the current value of theholdtime parameter. The default is 600 seconds.
preference number
Specifies the IRDP preference level of this Layer 3 switch. If a host receives Router Advertisements from multiple routers, the host selects the router interface that sent the message with the highest interval. The valid range is from 0 to 4294967296. The default is 0.
Modes

Interface configuration mode

Usage Guidelines

IRDP is used by RUCKUS Layer 3 switches to advertise the IP addresses of its router interfaces to directly attached hosts.

You can enable the feature on a global basis or on an individual port basis. If you enable the feature globally, all ports use the default values for the IRDP parameters. If you leave the feature disabled globally but enable it on individual ports, you also can configure the IRDP parameters on an individual port basis. You cannot configure IRDP parameters on individual ports if the feature is globally enabled.

The no form of the command disables IRDP on the specific interface.

Examples

The following example enables IRDP on a specific port and changes the maximum advertisement interval for Router Advertisement messages to 400 seconds 

device# configure terminal
device(config)# interface ethernet 1/1/3
device(config-if-e1000-1/1/3)# ip irdp maxadvertinterval 400
Parent topic: Commands I