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Page 71 / 268 Scroll up to view Page 66 - 70
Chapter 5 LAN Setup
P-660R-F1 Series User’s Guide
71
5.5
LAN Client List
This table allows you to assign IP addresses on the LAN to specific individual computers based on
their MAC Addresses.
Every Ethernet device has a unique MAC (Media Access Control) address. The MAC address is
assigned at the factory and consists of six pairs of hexadecimal characters, for example,
00:A0:C5:00:00:02.
To change your ZyXEL Device’s static DHCP settings, click
Network > LAN
> Client List
. The
screen appears as shown.
Figure 37
LAN Client List
Remote DHCP Server
If
Relay
is selected in the
DHCP
field above then enter the IP address of the
actual remote DHCP server here.
DNS Server
DNS Servers
Assigned by DHCP
Server
The ZyXEL Device passes a DNS (Domain Name System) server IP address to
the DHCP clients.
Primary DNS Server
Secondary DNS
Server
This field is not available when you set
DHCP
to
Relay
.
Enter the IP addresses of the DNS servers. The DNS servers are passed to the
DHCP clients along with the IP address and the subnet mask.
If the fields are left as
0.0.0.0
, the ZyXEL Device acts as a DNS proxy and
forwards the DHCP client’s DNS query to the real DNS server learned through
IPCP and relays the response back to the computer.
Apply
Click
Apply
to save your changes back to the ZyXEL Device.
Reset
Click
Reset
to begin configuring this screen afresh.
Table 20
DHCP Setup
LABEL
DESCRIPTION
Page 72 / 268
Chapter 5 LAN Setup
P-660R-F1 Series User’s Guide
72
The following table describes the labels in this screen.
5.6
LAN IP Alias
IP alias allows you to partition a physical network into different logical networks over the same
Ethernet interface. The ZyXEL Device supports three logical LAN interfaces via its single physical
Ethernet interface with the ZyXEL Device itself as the gateway for each LAN network.
Note: Make sure that the subnets of the logical networks do not overlap.
Table 21
LAN Client List
LABEL
DESCRIPTION
IP Address
Enter the IP address that you want to assign to the computer on your LAN with
the MAC address specified below.
The IP address should be within the range of IP addresses you specified in the
DHCP Setup
for the DHCP client.
MAC Address
Enter the MAC address of a computer on your LAN.
Add
Click
Add
to add a static DHCP entry.
#
This is the index number of the static IP table entry (row).
Status
This field displays whether the client is connected to the ZyXEL Device.
Host Name
This field displays the computer host name.
IP Address
This field displays the IP address relative to the # field listed above.
MAC Address
The MAC (Media Access Control) or Ethernet address on a LAN (Local Area
Network) is unique to your computer (six pairs of hexadecimal notation).
A network interface card such as an Ethernet adapter has a hardwired address
that is assigned at the factory. This address follows an industry standard that
ensures no other adapter has a similar address.
Reserve
Select the check box(es) in each entry to have the ZyXEL Device always assign
the selected entry(ies)’s IP address(es) to the corresponding MAC address(es)
(and host name(s)). You can select up to 32 entries in this table.
Modify
Click the modify icon to have the
IP address
field editable and change it.
Apply
Click
Apply
to save your changes back to the ZyXEL Device.
Cancel
Click
Cancel
to begin configuring this screen afresh.
Refresh
Click
Refresh
to reload the DHCP table.
Page 73 / 268
Chapter 5 LAN Setup
P-660R-F1 Series User’s Guide
73
The following figure shows a LAN divided into subnets A, B, and C.
Figure 38
Physical Network & Partitioned Logical Networks
To change your ZyXEL Device’s IP alias settings, click
Network
>
LAN
>
IP Alias
. The screen
appears as shown.
Figure 39
LAN IP Alias
The following table describes the labels in this screen.
Table 22
LAN IP Alias
LABEL
DESCRIPTION
IP Alias 1, 2
Select the check box to configure another LAN network for the ZyXEL Device.
IP Address
Enter the IP address of your ZyXEL Device in dotted decimal notation.
Alternatively, click the right mouse button to copy and/or paste the IP address.
IP Subnet Mask
Your ZyXEL Device will automatically calculate the subnet mask based on the IP
address that you assign. Unless you are implementing subnetting, use the
subnet mask computed by the ZyXEL Device.
Page 74 / 268
Chapter 5 LAN Setup
P-660R-F1 Series User’s Guide
74
RIP Direction
RIP (Routing Information Protocol, RFC 1058 and RFC 1389) allows a router to
exchange routing information with other routers. The
RIP Direction
field
controls the sending and receiving of RIP packets. Select the RIP direction from
Both
/
In Only
/
Out Only
/
None
. When set to
Both
or
Out Only
, the ZyXEL
Device will broadcast its routing table periodically. When set to
Both
or
In Only
,
it will incorporate the RIP information that it receives; when set to
None
, it will
not send any RIP packets and will ignore any RIP packets received.
RIP Version
The
RIP Version
field controls the format and the broadcasting method of the
RIP packets that the ZyXEL Device sends (it recognizes both formats when
receiving).
RIP-1
is universally supported but RIP-2 carries more information.
RIP-1 is probably adequate for most networks, unless you have an unusual
network topology. Both
RIP-2B
and
RIP-2M
sends the routing data in RIP-2
format; the difference being that
RIP-2B
uses subnet broadcasting while
RIP-
2M
uses multicasting. Multicasting can reduce the load on non-router machines
since they generally do not listen to the RIP multicast address and so will not
receive the RIP packets. However, if one router uses multicasting, then all
routers on your network must use multicasting, also. By default, RIP direction is
set to
Both
and the Version set to
RIP-1
.
Apply
Click
Apply
to save your changes back to the ZyXEL Device.
Cancel
Click
Cancel
to begin configuring this screen afresh.
Table 22
LAN IP Alias
LABEL
DESCRIPTION
Page 75 / 268
P-660R-F1 Series User’s Guide
75
C
HAPTER
6
Network Address Translation (NAT) Screens
This chapter discusses how to configure NAT on the ZyXEL Device.
6.1
NAT Overview
NAT (Network Address Translation - NAT, RFC 1631) is the translation of the IP address of a host in
a packet, for example, the source address of an outgoing packet, used within one network to a
different IP address known within another network.
6.1.1
NAT Definitions
Inside/outside denotes where a host is located relative to the ZyXEL Device, for example, the
computers of your subscribers are the inside hosts, while the web servers on the Internet are the
outside hosts.
Global/local denotes the IP address of a host in a packet as the packet traverses a router, for
example, the local address refers to the IP address of a host when the packet is in the local
network, while the global address refers to the IP address of the host when the same packet is
traveling in the WAN side.
Note that inside/outside refers to the location of a host, while global/local refers to the IP address
of a host used in a packet.
Thus, an inside local address (ILA) is the IP address of an inside host in
a packet when the packet is still in the local network, while an inside global address (IGA) is the IP
address of the same inside host when the packet is on the WAN side. The following table
summarizes this information.
NAT never changes the IP address (either local or global) of an outside host.
Table 23
NAT Definitions
ITEM
DESCRIPTION
Inside
This refers to the host on the LAN.
Outside
This refers to the host on the WAN.
Local
This refers to the packet address (source or destination) as the packet travels on the
LAN.
Global
This refers to the packet address (source or destination) as the packet travels on the
WAN.

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