IP Routing Features

Configuring IRDP

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 adver­ tisement, 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 - 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. The default is 600 seconds.

minadvertinterval - This 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.

preference <number> - This 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 preference as the host's default gateway. The valid range is -4294967296 to 4294967295. The default is 0.

Displaying IRDP Information

To display IRDP information, enter the following command from any CLI level:

HPswitch# show ip irdp

Stat us and Counters - ICMP Router Discovery Protocol

Glo bal Status : Disabled

VLA N Name

Status

Advertising

Min int Max int

Holdtime

Preference

 

 

Address

(sec)

(sec)

(sec)

 

--------------

--------

- ----------- ------- ------- -------- -----------

DEF AULT_VLAN

Enabled

multicast

450

600

1800

0

VLA N20

Enabled

multicast

450

600

1800

0

VLA N30

Enabled

multicast

450

600

1800

0

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