IP Configuration
IPv6 Management and Interfaces
316 Cisco 350, 350X and 550X Series Managed Switches, Firmware Release 2.4, ver 0.4
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STEP 6 To configure the interface as a DHCPv6 client, meaning to enable the interface to receive
information from the DHCPv6 server, such as: SNTP configuration and DNS information,
enter the DHCPv6 Client fields:
• DHCPv6 Client—Select to enable DHCPv6 Client (stateless and statefull) on the
interface.
• Rapid Comment—Select to enable the use of the two-message exchange for address
allocation and other configuration. If it is enabled, the client includes the rapid-commit
option in a solicit message.
• Minimum Information Refresh Time—This value is used to put a floor on the refresh
time value. If the server sends a refresh time option that is less than this value, this value
is used instead. Select either Infinite (no refresh unless the server sends this option) or
User Defined to set a value.
• Information Refresh Time—This value indicates how often the device will refresh
information received from the DHCPv6 server. If this option is not received from the
server, the value entered here is used. Select either Infinite (no refresh unless the server
sends this option) or User Defined to set a value.
STEP 7 To configure additional IPv6 parameters, enter the following fields:
• IPv6 Address Auto Configuration—Select to enable automatic address configuration
from router advertisements sent by neighbors.
• Number of DAD Attempts—Enter the number of consecutive neighbor solicitation
messages that are sent while Duplicate Address Detection (DAD) is performed on the
interface’s Unicast IPv6 addresses. DAD verifies the uniqueness of a new Unicast IPv6
address before it is assigned. New addresses remain in a tentative state during DAD
verification. Entering 0 in this field disables duplicate address detection processing on
the specified interface. Entering 1 in this field indicates a single transmission without
follow-up transmissions.
• Send ICMPv6 Messages—Enable generating unreachable destination messages.
• MLD Version—IPv6 MLD version.
• IPv6 Redirects—Select to enable sending ICMP IPv6 redirect messages. These
messages inform other devices not to send traffic to the device, but rather to another
device.
STEP 8 Click Apply to enable IPv6 processing on the selected interface. Regular IPv6 interfaces have
the following addresses automatically configured:
• Link local address using EUI-64 format interface ID based on a device’s MAC address
• All node link local Multicast addresses (FF02::1)
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