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Vigor2700Ge/e User’s Guide
21
VPI Type in the value provided by your ISP.
VCI Type in the value provided by your ISP.
QoS Type Select a proper QoS type for the channel.
Protocol Select a proper protocol for this channel.
Encapsulation Choose a proper type for this channel. The types will be different
according to the protocol setting that you choose.
3
3
.
.
2
2
L
L
A
A
N
N
Local Area Network (LAN) is a group of subnets regulated and ruled by router. The design of
network structure is related to what type of public IP addresses coming from your ISP.
3
3
.
.
2
2
.
.
1
1
B
B
a
a
s
s
i
i
c
c
s
s
o
o
f
f
L
L
A
A
N
N
The most generic function of Vigor router is NAT. It creates a private subnet of your own. As
mentioned previously, the router will talk to other public hosts on the Internet by using public
IP address and talking to local hosts by using its private IP address. What NAT does is to
translate the packets from public IP address to private IP address to forward the right packets
to the right host and vice versa. Besides, Vigor router has a built-in DHCP server that assigns
private IP address to each local host. See the following diagram for a briefly understanding.