ZyXEL Communications VMG1312-B Series - What You Need to Know

Chapter 8 Home Networking
VMG1312-B Series User’s Guide
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8.1.2 What You Need To Know
8.1.2.1 About LAN
IP Address
I P addresses identify individual devices on a net work. Every net working device ( including
com puters, servers, rout ers, printers, etc.) needs an I P address t o com m unicate across t he
net work. These networking devices are also known as hosts.
Subnet Mask
Subnet m asks det erm ine t he m axim um num ber of possible host s on a network. You can also use
subnet m asks t o divide one net work into m ultiple sub- networks.
DHCP
A DHCP (Dynam ic Host Configurat ion Prot ocol) server can assign your Device an I P address, subnet
m ask, DNS and other routing inform ation when it 's turned on.
DNS
DNS ( Dom ain Nam e System ) is for m apping a dom ain nam e to its corresponding I P address and
vice versa. The DNS server is extrem ely im port ant because without it, you m ust know t he I P
address of a networ king device before you can access it.
RADVD (Router Advertisement Daemon)
When an I Pv6 host sends a Router Solicit at ion ( RS) request t o discover t he available routers,
RADVD with Router Advertisement (RA) m essages in response to the request . I t specifies the
m inim um and m axim um intervals of RA broadcast s. RA m essages containing the address prefix.
I Pv6 hosts can be generated with the I Pv6 prefix an I Pv6 address.
8.1.2.2 About UPnP
Identifying UPnP Devices
UPnP hardware is identified as an icon in t he Net work Connect ions folder ( Windows XP) . Each UPnP
com pat ible device inst alled on your net work will appear as a separat e icon. Selecting the icon of a
UPnP device will allow you t o access t he inform ation and properties of that device.
NAT Traversal
UPnP NAT t raversal autom ates the process of allowing an applicat ion t o operat e t hrough NAT. UPnP
net work devices can aut om at ically configure network addressing, announce t heir presence in t he
net work to other UPnP devices and enable exchange of sim ple product and ser vice descriptions.
NAT t raversal allows t he following:
• Dynam ic port m apping
• Learning public I P addresses