Netgear DG824M 참조 매뉴얼

Network and Routing Basics

B-7

NETGEAR strongly recommends that you configure all hosts on a LAN segment to use the same 
netmask for the following reasons:

•

So that hosts recognize local IP broadcast packets

When a device broadcasts to its segment neighbors, it uses a destination address of the local 
network address with all ones for the host address. In order for this scheme to work, all devices 
on the segment must agree on which bits comprise the host address. 

•

So that a local router or bridge recognizes which addresses are local and which are remote

If your local network is isolated from the Internet (for example, when using NAT), you can assign 
any IP addresses to the hosts without problems. However, the IANA has reserved the following 
three blocks of IP addresses specifically for private networks:

10.0.0.0 - 10.255.255.255

172.16.0.0 - 172.31.255.255
192.168.0.0 - 192.168.255.255

NETGEAR recommends that you choose your private network number from this range. The 
DHCP server of the DG824M wireless gateway is preconfigured to automatically assign private 
addresses.

255.255.255.0

/24

255.255.255.128

/25

255.255.255.192

/26

255.255.255.224

/27

255.255.255.240

/28

255.255.255.248

/29

255.255.255.252

/30

255.255.255.254

/31

255.255.255.255

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