ZyXEL Communications ZyWall USG20-VPN, User Manual

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Chapter 9 Interfaces
USG20(W)-VPN Series User’s Guide
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IPv6 Router Advertisement
An IPv6 router sends router advertisement messages periodically to advertise its presence and
other parameters to the hosts in the same network.
DHCPv6
The Dynamic Host Configuration Protocol for IPv6 (DHCPv6, RFC 3315) is a server-client protocol
that allows a DHCP server to assign and pass IPv6 network addresses, prefixes and other
configuration information to DHCP clients. DHCPv6 servers and clients exchange DHCP messages
using UDP.
Each DHCP client and server has a unique DHCP Unique IDentifier (DUID), which is used for
identification when they are exchanging DHCPv6 messages. The DUID is generated from the MAC
address, time, vendor assigned ID and/or the vendor's private enterprise number registered with
the IANA. It should not change over time even after you reboot the device.
9.1.3 What You Need to Do First
For IPv6 settings, go to the Configuration > System > IPv6 screen to enable IPv6 support on the
USG first.
9.2 Port Role Screen
To access this screen, click Configuration > Network > Interface > Port Role . Use the Port
Role screen to set the USG’s flexible ports as part of the lan1 , lan2 , or dmz interfaces. This
creates a hardware connection between the physical ports at the layer-2 (data link, MAC address)
level. This provides wire-speed throughput but no security.
Note the following if you are configuring from a computer connected to a lan1 , lan2 , or dmz port
and change the port's role:
• A port's IP address varies as its role changes, make sure your computer's IP address is in the
same subnet as the USG's lan1 , lan2 , or dmz IP address.
• Use the appropriate lan1 , lan2 , or dmz IP address to access the USG.