ZyXEL p-2802h-i1 Guia Do Utilizador

Chapter 7 LAN Setup

P-2802H(W)(L)-I Series User’s Guide

The following lists out the steps taken, when a computer tries to access the Internet for the first 
time through the ZyXEL Device.

1 When a computer (which is in a different subnet) first attempts to access the Internet, it 

sends packets to its default gateway (which is not the ZyXEL Device) by looking at the 
MAC address in its ARP table. 

2 When the computer cannot locate the default gateway, an ARP request is broadcast on 

the LAN. 

3 The ZyXEL Device receives the ARP request and replies to the computer with its own 

MAC address. 

4 The computer updates the MAC address for the default gateway to the ARP table. Once 

the ARP table is updated, the computer is able to access the Internet through the ZyXEL 
Device. 

5 When the ZyXEL Device receives packets from the computer, it creates an entry in the 

IP routing table so it can properly forward packets intended for the computer. 

After all the routing information is updated, the computer can access the ZyXEL Device and 
the Internet as if it is in the same subnet as the ZyXEL Device. 

Click Network > LAN to open the IP screen. See 

 for background 

information. Use this screen to set the Local Area Network IP address and subnet mask of your 
ZyXEL Device.

Figure 42   LAN IP

The following table describes the fields in this screen.  

Table 23   LAN IP

LAN TCP/IP

IP Address

Enter the LAN IP address you want to assign to your ZyXEL Device in dotted 

decimal notation, for example, 192.168.1.1 (factory default). 

IP Subnet Mask 

Type the subnet mask of your network in dotted decimal notation, for example 

255.255.255.0 (factory default). Your ZyXEL Device automatically computes the 

subnet mask based on the IP Address you enter, so do not change this field 

unless you are instructed to do so.

Apply

Click Apply to save your changes back to the ZyXEL Device.