H3C S5500-SI Series Operation Manual

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

Operation Manual – IPv6 ConfigurationH3C S5500-SI Series Ethernet Switches Chapter 1 IPv6 Configuration1-8Table 1-3 Types and functions of ICMPv6 messagesICMPv6 message FunctionUsed to acquire the link-layer address of a neighborUsed to verify whether the neighbor is reachableNeighbor solicitation(NS) messageUsed to perform a duplicate address detectionUsed to respond to a neighbor solicitation messageNeighbor advertisement(NA) message When the link layer changes, the local node initiates aneighbor advertisement message to notify neighbornodes of the node information change.Router solicitation (RS)messageAfter started, a host sends a router solicitation messageto request the router for an address prefix and otherconfiguration information for the purpose ofautoconfiguration.Used to respond to a router solicitation messageRouter advertisement(RA) messageWith the RA message suppression disabled, the routerregularly sends a router advertisement messagecontaining information such as address prefix and flagbitsRedirect messageWhen a certain condition is satisfied, the default gatewaysends a redirect message to the source host so that thehost can reselect a correct next hop router to forwardpackets.The NDP mainly provides the following functions:I. Address resolutionSimilar to the ARP function in IPv4, a node acquires the link-layer address of neighbornodes on the same link through NS and NA messages. Figure 1-4 shows how node Aacquires the link-layer address of node B.NSNAICMP Type = 135Src = ADst = solicited-node multicast of BNSNAData = link-layer address of A ICMP TypeSrc = BDst = AData = linkA B= 136-layer address of BnFigure 1-4 Address resolutioThe address resolution procedure is as follows:

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