IP Routing Features

Configuring IRDP

Syntax: [no] ip irdp

Enables or disables (the default) ip irdp on the specified

VLAN.

[broadcast multicast]

This parameter specifies the packet type the routing switch uses to send the Router Advertisement: broadcast - The routing switch sends Router

Advertisements as IP broadcasts. multicast - The routing switch sends Router

Advertisements as multicast packets addressed to IP multicast group 224.0.0.1. This is the default.

[ holdtime < seconds >]

This parameter specifies how long a host that receives a Router Advertisement from the routing switch should consider the advertisement to be valid. When a host receives a new Router Advertisement message from the routing switch, the host resets the hold time for the routing switch to the hold time specified in the new advertisement. If the hold time of an advertisement expires, the host discards the advertisement, concluding that the router interface that sent the advertisement is no longer available. The value must be greater than the value of the maxadvertinterval parameter and cannot be greater than 9000. The default is three times the value of the maxadvertinterval parameter.

[maxadvertinterval < seconds >]

This parameter specifies the maximum amount of time the routing switch waits between sending Router Advertisements. You can specify a value from 1 to the current value of the holdtime parameter. Default: 600 (seconds).

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