Multicast and Routing Guide K/KA/KB.15.15

HP Switch(config)# ip irdp
This command enables IRDP on the IP interfaces on all ports. Each port uses the default values for
the IRDP parameters.
Enabling IRDP on an individual VLAN interface
To enable IRDP on an individual VLAN interface and configure IRDP parameters, enter commands
such as the following:
HP Switch(config)# vlan 1
HP Switch(vlan-1)# ip irdp maxadvertinterval 400
This example shows how to enable IRDP on a specific interface (VLAN 1) and change the maximum
advertisement interval for Router Advertisement messages to 400 seconds.
Syntax:
[no] ip irdp [ broadcast | multicast ] [holdtime seconds]
[maxadvertinterval seconds] [minadvertinterval seconds]
[preference number]
broadcast | multicast 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 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 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.
minadvertinterval Specifies the minimum amount of time the routing
switch can wait between sending Router
226 ICMP Router Discovery Protocol