HP 6120G/XG HP ProCurve Series 6120 Blade Switches Multicast and Routing Guide - Page 85
Enabling IRDP Globally, Enabling IRDP on an Individual VLAN Interface, broadcast | multicast
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IP Routing Features Configuring IRDP ■ Maximum message interval and minimum message interval - when IRDP is enabled, the routing switch sends the Router Advertisement messages every 450-600 seconds by default. The time within this interval that the routing switch selects is random for each message and is not affected by traffic loads or other network factors. The random interval minimizes the probability that a host will receive Router Advertisement messages from other routers at the same time. The interval on each IRDPenabled routing switch interface is independent of the interval on other IRDP-enabled interfaces. The default maximum message interval is 600 seconds. The default minimum message interval is 450 seconds. ■ Preference - If a host receives multiple Router Advertisement messages from different routers, the host selects the router that send the message with the highest preference as the default gateway. The preference can be a number from -4294967296 to 4294967295. The default is 0. Enabling IRDP Globally To enable IRDP globally, enter the following command: ProCurve(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 param eters, enter commands such as the following: ProCurve(config)# vlan 1 ProCurve(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 ] [maxadvertinterval < seconds >] [minadvertinterval < seconds >] [preference < number >] ■ 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. 3-39