ZyXEL Communications MAX-206M1R User Manual

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Chapter 6 The LAN Configuration Screens
User’s Guide
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6.6  Technical Reference
The following section contains additional technical information about the WiMAX 
Modem features described in this chapter.
6.6.1  IP Address and Subnet Mask
Similar to the way houses on a street share a common street name, computers on 
a LAN share one common network number.
Where you obtain your network number depends on your particular situation. If 
the ISP or your network administrator assigns you a block of registered IP 
addresses, follow their instructions in selecting the IP addresses and the subnet 
mask.
If the ISP did not explicitly give you an IP network number, then most likely you 
have a single user account and the ISP will assign you a dynamic IP address when 
the connection is established. If this is the case, it is recommended that you select 
a network number from 192.168.0.0 to 192.168.255.0 and you must enable the 
Network Address Translation (NAT) feature of the WiMAX Modem. The Internet 
Assigned Number Authority (IANA) reserved this block of addresses specifically for 
private use; please do not use any other number unless you are told otherwise. 
Let's say you select 192.168.1.0 as the network number; which covers 254 
individual addresses, from 192.168.1.1 to 192.168.1.254 (zero and 255 are 
reserved). In other words, the first three numbers specify the network number 
while the last number identifies an individual computer on that network.
Multicast
You do not have to enable multicasting to use RIP-2M. (See RIP 
Version
.)
Select which version of IGMP the WiMAX Modem uses to support 
multicasting on the LAN. Multicasting sends packets to some computers 
on the LAN and is an alternative to unicasting (sending packets to one 
computer) and broadcasting (sending packets to every computer).
• None - The WiMAX Modem does not support multicasting.
• IGMP-v1 - The WiMAX Modem supports IGMP version 1.
• IGMP-v2 - The WiMAX Modem supports IGMP version 2.
Multicasting can improve overall network performance. However, it 
requires extra processing and generates more network traffic. In 
addition, other computers on the LAN have to support the same version 
of IGMP.
Apply
Click to save your changes.
Reset
Click to restore your previously saved settings.
Table 18   ADVANCED > LAN Configuration > Other Settings (continued)
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