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Chapter 6 LAN Setup
P-870HN-51D User’s Guide
95
6.4 Technical Reference
The following section contains additional technical information about the P-870HN-
51D features described in this chapter.
LANs, WANs and the ZyXEL Device
The actual physical connection determines whether the P-870HN-51D ports are
LAN or WAN ports. There are two separate IP networks, one inside the LAN
network and the other outside the WAN network as shown next.
Figure 42 LAN and WAN IP Addresses
DHCP Setup
DHCP (Dynamic Host Configuration Protocol, RFC 2131 and RFC 2132) allows
individual clients to obtain TCP/IP configuration at start-up from a server. You can
configure the P-870HN-51D as a DHCP server or disable it. When configured as a
server, the P-870HN-51D provides the TCP/IP configuration for the clients. If you
turn DHCP service off, you must have another DHCP server on your LAN, or else
the computer must be manually configured.
Blocking Mode Select this to have the P-870HN-51D block all unknown multicast
packets from the WAN.
Enable IP Alias Select the check box to configure another LAN network for the P-
870HN-51D.
IP Address Enter the IP address of your P-870HN-51D in dotted decimal notation.
IP Subnet
Mask
Type the subnet mask of your network in dotted decimal notation, for
example 255.255.255.0 (factory default).
Apply Click Apply to save your changes back to the P-870HN-51D.
Table 23 LAN > IP
LABEL DESCRIPTION
WAN
LAN