Alcatel-Lucent 6850-48 网络指南

Configuring RDP

Creating an RDP Interface

OmniSwitch AOS Release 6 Network Configuration Guide

page 29-9

It is only necessary to change the above parameter values if the default value is not sufficient. The follow-
ing subsections provide information about how to configure RDP interface parameters if it is necessary to 
use a different value.

Active RDP interfaces transmit advertisement packets at random intervals and in response to ICMP solici-
tation messages received from network hosts. These packets are sent to one of two supported destination 
addresses, all systems multicast (224.0.0.1) or broadcast (255.255.255.255). 

By default, RDP interfaces are configured to use the 224.0.0.1 as the destination address. To change the 
RDP destination address, use the 

 command. 

For example, the following command changes the destination address to the broadcast address:

-> ip router-discovery interface Marketing advertisement-

address broadcast

Enter all-systems-multicast when using this command to change the destination address to 224.0.0.1. For 
example:

-> ip router-discovery interface Marketing advertisement-address all-systems-

multicast

The advertisement interval represents a range of time, in seconds, in which the RDP will transmit adver-
tisement packets at random intervals. This range is defined by configuring a maximum amount of time 
that the RDP will not exceed before the next transmission and configuring a minimum amount of time that 
the RDP will observe before sending the next transmission. Both of these values are referred to as the 
maximum advertisement interval and the minimum advertisement interval.

Note that when an RDP interface becomes active, it transmits 3 advertisement packets at intervals no 
greater than 16 seconds. This facilitates a quick discovery of this router on the network. After these initial 
transmissions, advertisements occur at random times within the advertisement interval value or in 
response to solicitation messages received from network hosts.

To set the maximum amount of time, in seconds, that the RDP will allow between advertisements, use the

 command. For example, the following 

command sets this value to 1500 seconds for the Marketing IP router interface:

-> ip router-discovery interface Marketing max-advertisement-interval 1500

Make sure that the value specified with this command is greater than the current minimum advertisement 
interval value. By default, this value is set to 600 seconds.

Advertisement lifetime.

1800 seconds (3 * maximum value)

Router IP address preference level.

0