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Page 61 / 82 Scroll up to view Page 56 - 60
Wireless Cable Voice Gateway Model CBVG834G Adminstrators User Manual
Managing Your Network
4-7
v1.0, February 2008
LAN IP Settings
The gateway is preconfigured to use private IP addresses on the LAN side, and to act as a DHCP
server. You can use the LAN IP Setup screen to configure LAN IP services such as the IP address
of the gateway and DHCP.
To configure the LAN IP:
1.
Under the Advanced heading on the main menu, select LAN IP. The LAN IP screen displays.
2.
Enter the following information:
•
LAN IP Address.
The LAN IP address that you want to assign to your gateway. The
default is 192.168.0.1.
•
Subnet Mask.
The subnet mask for your network IP address. The default is
255.255.255.0. (Unless you are implementing subnetting, use the default subnet mask.)
Note:
If you change the LAN IP address of the gateway while connected through the
browser, you will be disconnected. You must then open a new connection to the
new IP address and log in again
Figure 4-6
Page 62 / 82
Wireless Cable Voice Gateway Model CBVG834G Adminstrators User Manual
4-8
Managing Your Network
v1.0, February 2008
These addresses are part of the IETF-designated private address range for use in private
networks, and should be suitable in most applications. If your network has a requirement
to use a different IP addressing scheme, you can make those changes in the LAN IP page.
•
DHCP Server.
To to assign IP addresses to your computers automatically, select Yes. To
disable the DHCP Server and assign IP addresses to your computers manually, select No.
See
“Using the Gateway as a DHCP Server” on page 4-8
.
•
Starting IP Address.
Enter the first of the contiguous addresses in the address pool. The
default start address is 192.168.0.10.
These addresses should be part of the same IP address subnet as the gateway’s LAN IP
address. Using the default addressing scheme, you should define a range between
192.168.0.10 and 192.168.0.253. The range of IP addresses between 192.168.0.2 and
192.168.0.9 can be used for devices with fixed (or static) addresses.
•
Ending IP Address.
Enter the last of the contiguous addresses in the address pool. The
default end address is 192.168.0.19.
•
DHCP Reservation Lease Info.
View information about each PC that has been assigned
a DHCP lease by the gateway. The MAC address of the PC, IP address assigned and the
expiration time of the DHCP lease are listed. You can manually revoke the DHCP leases
by clicking Clear DHCP Leases.
3.
Click
Apply
to save your settings.
Using the Gateway as a DHCP Server
By default, the gateway is a DHCP server. It can assign IP, DNS server, and default gateway
addresses to all computers connected to the LAN. The default wireless voice gateway address is its
LAN address. The wireless voice gateway assigns IP addresses to the network computers from a
pool of addresses specified in the Starting Address and Ending Address fields. Each pool address
is tested before it is assigned to avoid duplicate addresses on the LAN.
Note:
If you select no for the DHCP server setting, then you must assign a static
IP address to your PC in order to reconnect to the gateway and enable the
DHCP server again.
Note:
If another device on your network is the DHCP server, or if you will manually
configure the network settings of all of your computers, select No for the DHCP
Server. For more information about DHCP and IP addresses, see the link to
“Preparing a Computer for Network Access:” in Appendix B
.
Page 63 / 82
Wireless Cable Voice Gateway Model CBVG834G Adminstrators User Manual
Managing Your Network
4-9
v1.0, February 2008
The gateway delivers the following parameters to any LAN device that requests DHCP:
•
An IP Address from the range you have defined.
•
Subnet Mask.
•
Gateway IP Address is the gateway’s LAN IP address.
•
Primary DNS Server, if you entered a Primary DNS address in the Basic Settings page;
otherwise, the gateway’s LAN IP address.
•
Secondary DNS Server, if you entered a Secondary DNS address in the Basic Settings page.
Configuring DHCP Server Reservation Parameters
To configure DHCP server reservation parameters for your LAN:
1.
Enter the MAC address of the PC for which you want to reserve an IP Address.
2.
Enter a free IP Address for the PC.
3.
CLick
Add
.
To remove a reserved IP from the DHCP Reservation Lease Info table:
1.
Select the radio button adjacent to the entry that you want to remove from the table.
2.
Click
Delete
.
The DHCP Client Lease details for all computers in the LAN gateway are shown in the DHCP
Client Lease Info table. To clear all DHCP Client leases, click Clear DHCP Leases.
.
Remote Management Access
You can use remote management to configure, upgrade, and check the status of your gateway
through the Internet.
Note:
The gateway implements a DNS relay function. When it receives a DNS request on
the LAN, it passes it to the DNS server specified on the WAN. It then relays the
response back to the original requesting PC.
Page 64 / 82
Wireless Cable Voice Gateway Model CBVG834G Adminstrators User Manual
4-10
Managing Your Network
v1.0, February 2008
To configure remote management:
1.
Under the Advanced heading on the main menu, select Remote Management. The Remote
Management screen displays:
2.
Select the
Allow Remote Management
check box.
3.
Enter the
Remote User Name
and
Remote Password
that will be required to remotely access
your gateway.
4.
Enter the
Port Number
that will be used for accessing the management interface.
Web browser access normally uses the standard HTTP service port 80. For greater security,
you can specify a custom port by entering that number in the box provided. Choose a number
between 1024 and 65535, but do not use the number of any common service port. The default
is 8080, which is a common alternate for HTTP.
5.
To make sure that you can use remote management even if the wireless voice gateway is reset,
select the
Allow Remote Management after Factory Default Reset
check box.
If you do not select this check box, you will not be able to remotely access the gateway if you
use the Erase feature to revert to the Factory Default settings.
6.
Click
Apply
to have your changes take effect.
When accessing your wireless voice gateway from the Internet, type the WAN IP address of your
gateway into your browser, followed by a colon (:) and the port number. For example, if your
WAN IP address is 134.177.0.123 and you use port number 8080, type the following in your
browser:
Figure 4-7
Page 65 / 82
Wireless Cable Voice Gateway Model CBVG834G Adminstrators User Manual
Managing Your Network
4-11
v1.0, February 2008
Universal Plug and Play (UPnP)
Universal Plug and Play (UPnP) helps devices, such as Internet appliances and computers, access
the network and connect to other devices as needed. UPnP devices can automatically discover the
services from other registered UPnP devices on the network.
UPnP can be enabled or disabled for automatic device configuration. The default setting for UPnP
is disabled. If disabled, the router will not allow any device to automatically control the resources,
such as port forwarding (mapping), of the router.
Other features of UPnP:
•
Advertisement Period
. The number entered in this field (in minutes) determines how often
the router will advertise (broadcast) its UPnP information. This value can range from 1 to 1440
minutes. The default period is for 30 minutes.
–
Shorter durations ensure that control points have current device status at the expense of
additional network traffic.
–
Longer durations might compromise the freshness of the device status but can
significantly reduce network traffic.
•
Advertisement Time To Live.
The time to live for the advertisement is measured in hops
(steps) for each UPnP packet sent. A hop is the number of steps allowed to propagate for each
UPnP advertisement before it disappears. The number of hops can range from 1 to 255. The
default value for the advertisement time to live is 4 hops, which should be fine for most home
networks. If you notice that some devices are not being updated or reached correctly, then you
may need to increase this value a little.
•
UPnP Portmap Table.
The UPnP Portmap Table displays the IP address of each UPnP device
that is currently accessing the router and which ports (internal and external) that device has
opened. The UPnP Portmap Table also displays what type of port is opened and if that port is
still active for each IP address.

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