DHCPv6 introduction


DHCPv6 servers are responsible for assigning IPv6 addresses/prefixes and other configuration parameters (such as the DNS server address) to clients. After a DHCP client sends an Information-request message to a DHCP server for configuration parameters, the DHCP server responds with a Reply message carrying the requested configuration parameters based on a policy. Both the Request and Reply messages are encapsulated using UDP.

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DHCPv6 support on S series switch
Versions and models of S series switches (except S1700 switches) that support DHCPv6 are as follows: - S9300 and S7700 series switches in V100R003 and later versions - S3700SI, S3700EI, S5700SI, and S5700EI switches in V100R005 and later versions - S3700HI, S5700HI, and S6700EI switches in V100R006 and later versions - S9700 series, S5700LI, S5700S-LI, S5710-C-LI, and S5710EI switches in V200R001 and later versions - S2750EI and S5710HI switches in V200R003 and later versions - S12708 and S12712 switches in V200R005 and later versions - S1720, S2720EI, and S5720HI switches in V200R006 and later versions - S5720EI switches in V200R007 and later versions

How to limit DHCPv6 packets?
we can configure "cpu-defend policy"to limite the DHCPv6 packet. For V200R001 and above , we can configure"undo dhcp snooping enable ipv6"to disable the DHCPv6 snooping function.

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