Edge-Core ECS4660-28F Management Manual page 1628

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| DHCP Commands

DHCP for IPv6

ipv6 dhcp client

rapid-commit vlan

This command specifies the Rapid Commit option for DHCPv6 message

exchange for all DHCPv6 client requests submitted from the specified

interface. Use the no form to disable this option.

[no] ipv6 dhcp client rapid-commit vlan vlan-id

vlan-id - VLAN ID, specified as a single number, a range of

consecutive numbers separated by a hyphen, or multiple numbers

separated by commas. (Range: 1-4094; Maximum command

length: 300 characters)

Global Configuration

DHCPv6 clients can obtain configuration parameters from a server

through a normal four-message exchange (solicit, advertise, request,

reply), or through a rapid two-message exchange (solicit, reply). The

rapid-commit option must be enabled on both client and server for the

two-message exchange to be used.

This command allows two-message exchange method for prefix

delegation. When enabled, DCHPv6 client requests submitted from the

specified interface will include the rapid commit option in all solicit

If the rapid commit option has been enabled on the switch with this

command, and on the DHCPv6 server, message exchange can be

reduced from the normal four step process to a two-step exchange of

only solicit and reply messages.

Console(config)#ipv6 dhcp client rapid-commit vlan 2

Console(config)#

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