Installation and Getting Started Guide

7.Select the Save link at the bottom of the dialog. Select Yes when prompted to save the configuration change to the startup-config file on the device’s flash memory.

Enabling IRDP on an Individual Port

To enable IRDP on an individual port and configure IRDP parameters, use either of the following methods.

USING THE CLI

To enable IRDP on an individual interface and change IRDP parameters, enter commands such as the following:

HP9300(config)# interface ethernet 1/3

HP9300(config-if-1/3)# ip irdp maxadvertinterval 400

This example shows how to enable IRDP on a specific port and change the maximum advertisement interval for Router Advertisement messages to 400 seconds.

NOTE: To enable IRDP on individual ports, you must leave the feature globally disabled.

Syntax: [no] ip irdp [broadcast multicast] [holdtime <seconds>] [maxadvertinterval <seconds>] [minadvertinterval <seconds>] [preference <number>]

The broadcast multicast parameter specifies the packet type the routing switch uses to send Router Advertisement.

•broadcast – The routing switch sends Router Advertisement as IP broadcasts. This is the default.

•multicast – The routing switch sends Router Advertisement as multicast packets addressed to IP multicast group 224.0.0.1.

The holdtime <seconds> 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.

The maxadvertinterval 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. The default is 600 seconds.

The minadvertinterval parameter specifies the minimum amount of time the routing switch can wait between sending Router Advertisements. The default is three-fourths (0.75) the value of the maxadvertinterval parameter. If you change the maxadvertinterval parameter, the software automatically adjusts the minadvertinterval parameter to be three-fourths the new value of the maxadvertinterval parameter. If you want to override the automatically configured value, you can specify an interval from 1 to the current value of the maxadvertinterval parameter.

The preference <number> parameter specifies the IRDP preference level of this routing switch. If a host receives Router Advertisements from multiple routers, the host selects the router interface that sent the message with the highest interval as the host’s default gateway. The valid range is -4294967296 to 4294967295. The default is 0.

USING THE WEB MANAGEMENT INTERFACE

You cannot configure these options using the Web management interface.

Configuring RARP

The Reverse Address Resolution Protocol (RARP) provides a simple mechanism for directly-attached IP hosts to boot over the network. RARP allows an IP host that does not have a means of storing its IP address across power cycles or software reloads to query a directly-attached router for an IP address.

RARP is enabled by default. However, you must create a RARP entry for each host that will use the routing switch for booting. A RARP entry consists of the following information:

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