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Chapter 7 Interfaces
ZyWALL 110/310/1100 Series User’s Guide
116
Subnet Mask Enter the subnet mask of this interface in dot decimal notation. The subnet mask
indicates what part of the IP address is the same for all computers in the network.
Gateway This option appears when Interface Type is external or general. Enter the IP
address of the gateway. The ZyWALL sends packets to the gateway when it does not
know how to route the packet to its destination. The gateway should be on the same
network as the interface.
Metric This option appears when Interface Type is external or general. Enter the priority
of the gateway (if any) on this interface. The ZyWALL decides which gateway to use
based on this priority. The lower the number, the higher the priority. If two or more
gateways have the same priority, the ZyWALL uses the one that was configured first.
IPv6 Address
Assignment
These IP address fields configure an IPv6 IP address on the interface itself.
Enable Stateless
Address Auto-
configuration
(SLAAC)
Select this to enable IPv6 stateless auto-configuration on this interface. The interface
will generate an IPv6 IP address itself from a prefix obtained from an IPv6 router in the
network.
Link-Local
address
This displays the IPv6 link-local address and the network prefix that the ZyWALL
generates itself for the interface.
IPv6 Address/
Prefix Length
Enter the IPv6 address and the prefix length for this interface if you want to use a
static IP address. This field is optional.
The prefix length indicates what the left-most part of the IP address is the same for all
computers in the network, that is, the network address.
Gateway Enter the IPv6 address of the default outgoing gateway using colon (:) hexadecimal
notation.
Metric Enter the priority of the gateway (if any) on this interface. The ZyWALL decides which
gateway to use based on this priority. The lower the number, the higher the priority. If
two or more gateways have the same priority, the ZyWALL uses the one that was
configured first.
Address from
DHCPv6 Prefix
Delegation
Use this table to have the ZyWALL obtain an IPv6 prefix from the ISP or a connected
uplink router for an internal network, such as the LAN or DMZ. You have to also enter a
suffix address which is appended to the delegated prefix to form an address for this
interface. See Prefix Delegation on page 107 for more information.
To use prefix delegation, you must:
• Create at least one DHCPv6 request object before configuring this table.
• The external interface must be a DHCPv6 client. You must configure the DHCPv6
request options using a DHCPv6 request object with the type of prefix-delegation.
• Assign the prefix delegation to an internal interface and enable router
advertisement on that interface.
Add Click this to create an entry.
Edit Select an entry and click this to change the settings.
Remove Select an entry and click this to delete it from this table.
# This field is a sequential value, and it is not associated with any entry.
Delegated
Prefix
Select the DHCPv6 request object to use from the drop-down list.
Suffix
Address
Enter the ending part of the IPv6 address, a slash (/), and the prefix length. The
ZyWALL will append it to the delegated prefix.
For example, you got a delegated prefix of 2003:1234:5678/48. You want to configure
an IP address of 2003:1234:5678:1111::1/128 for this interface, then enter
::1111:0:0:0:1/128 in this field.
Table 41 Configuration > Network > Interface > Ethernet > Edit (continued)
LABEL DESCRIPTION