H3C S5500-SI Series Operation Manual

Also see for S5500-SI Series: Configuration Operation manual Configuration guide Configuration guide Configuration guide

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H3C S5500-SI Series Operation Manual Manual pdf 20 page image

Operation Manual – IPv6H3C S5500-SI Series Ethernet Switches Chapter 1 IPv6 Basics Configuration1-19To do… Use the command… RemarksSet the reachable time ipv6 nd nudreachable-time valueOptionalBy default, the neighborreachable time on thelocal interface is 30,000milliseconds and theReachable Timer field inRA messages is 0.Caution:The maximum interval for sending RA messages should be less than or equal to therouter lifetime in RA messages.1.4.4 Configuring the Number of Attempts to Send an NS Message for DADAn interface sends a neighbor solicitation (NS) message for DAD after acquiring anIPv6 address. If the interface does not receive a response within a specified time(determined by the ipv6 nd ns retrans-timer command), it continues to send an NSmessage. If it still does not receive a response after the number of attempts to send anNS message reaches the maximum, the acquired address is considered available.Follow these steps to configure the attempts to send an NS message for DAD:To do… Use the command… RemarksEnter system view system-view —Enter interface view interface interface-typeinterface-number —Configure the number ofattempts to send an NSmessage for DADipv6 nd dad attemptsvalueOptional1 by default. When thevalue argument is set to 0,DAD is disabled.1.5 Configuring PMTU Discovery1.5.1 Configuring a Static PMTU for a Specified IPv6 AddressYou can configure a static PMTU for a specified destination IPv6 address. When asource host sends packets through an interface, it compares the interface MTU with thestatic PMTU of the specified destination IPv6 address. If the packet size is larger than