Cisco Small Business RV220W Administration Manual page 42

Configuring Networking
IPv6
STEP 3
Cisco RV220W Administration Guide
addresses. If you disable DHCPv6, proceed to the next step. If you enable
DHCPv6, enter these settings:
• Choose the DHCP mode.
- Stateless—If you choose this option, an external IPv6 DHCP server is not
required because the IPv6 LAN hosts are auto-configured by the Cisco
RV220W. In this case, the Cisco RV220W advertisement daemon
(RADVD) must be configured on this device, and ICMPv6 RV220W
discovery messages are used by the host for auto-configuration. There
are no managed addresses to serve the LAN nodes.
- Stateful—If you choose this option, the IPv6 LAN host will rely on an
external DHCPv6 server to provide required configuration settings.
• Domain Name—(Optional) Enter the domain name of the DHCPv6 server.
• Server Preference—Enter a number to indicate the preference level of this
DHCP server. DHCP advertise messages with the highest server preference
value are preferred over other DHCP server advertise messages. The range
is 0 to 255. The default setting is 255.
• DNS Servers—Choose the DNS proxy behavior:
- Use DNS Proxy—If you choose this option, the RV220W acts as a proxy
for all DNS requests and communicate with the ISP's DNS servers (as
configured in the WAN settings page).
- Use DNS from ISP—If you choose this option, the ISP defines the DNS
servers (primary/secondary) for the LAN DHCP client.
- Use Below—If you choose this option, you specify the primary/
secondary DNS servers to use. If you chose this option, enter the IP
address of the primary and secondary DNS servers.
• Lease/Rebind Time—Enter the duration (in seconds) for which IP
addresses will be leased to endpoints on the LAN.
In the IP Address Pool Table, manage the entries as needed. You can define the
IPv6 delegation prefix for a range of IP addresses to be served by the Cisco
RV220W's DHCPv6 server. Using a delegation prefix, you can automate the
process of informing other networking equipment on the LAN of DHCP information
specific for the assigned prefix.
• To add an entry, click Add. To edit an entry, check the box and then click Edit.
Enter the starting IP address, the ending IP address, and the prefix length.
The number of common initial bits in the network's addresses is set by the
prefix length field.
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