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Disconnect if no activity
The CT-5071 can be configured to disconnect if there is no activity for a period of
time by selecting the
Disconnect if no activity
check box. When the checkbox is
ticked, you need to enter the inactivity timeout period.
The timeout period ranges
from 1 minute to 4320 minutes.
PPP IP Extension
The PPP IP Extension is a special feature deployed by some service providers. Unless
your service provider specially requires this setup, do not select it.
The PPP IP Extension supports the following conditions:
z
Allows only one PC on the LAN
z
The public IP address assigned by the remote side using the PPP/IPCP protocol
is actually not used on the WAN PPP interface.
Instead, it is forwarded to the
PC’s LAN interface through DHCP.
Only one PC on the LAN can be connected to
the remote, since the DHCP server within the ADSL router has a single IP
address to assign to a LAN device.
z
NAPT and firewall are disabled when this option is selected.
z
The ADSL router becomes the default gateway and DNS server to the PC
through DHCP using the LAN interface IP address.
z
The ADSL router extends the IP subnet at the remote service provider to the
LAN PC.
That is, the PC becomes a host belonging to the same IP subnet.
z
The ADSL router bridges the IP packets between WAN and LAN ports, unless the
packet is addressed to the router’s LAN IP address.
2. Click
Next
to display the screen below.
Enable IGMP Multicast checkbox:
Tick the checkbox to enable IGMP multicast
(proxy).
IGMP (Internet Group Membership Protocol) is a protocol used by IP hosts
to report their multicast group memberships to any immediately neighboring
multicast routers.
Enable WAN Service checkbox:
Tick this item to enable the ADSL service.
Untick
it to stop the ADSL service.
Service Name:
This is user-defined.
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Page 17 / 75
3. After entering your settings, select
Next
.
The following screen appears. This page
allows the user to configure the LAN interface IP address, subnet mask and DHCP
server.
If the user would like this ADSL router to assign dynamic IP address, DNS
server and default gateways to other LAN devices, select the button
Enable DHCP
server on the LAN
to enter the starting IP address and end IP address and DHCP
leased time.
4. Click
Next
to display the WAN Setup-Summary screen that presents the entire
configuration summary.
Click
Save/Reboot
if the settings are correct.
Click
Back
if you wish to modify the settings.
16
Page 18 / 75
5. After clicking
Save/Reboot
, the router will save the configuration to the flash
memory, and reboot.
The Web UI will not respond until the system is brought up
again.
After the system is up, the Web UI will refresh to the Device Info page
automatically.
The CT-5071 is ready for operation and the LEDs display as described
in the LED description tables.
17
Page 19 / 75
z
MAC Encapsulation Routing (MER)
To configure MER, do the following.
1. Select
Quick Setup
and click
Next
.
2. Enter the PVC Index provided by the ISP and click
Next
and click
Next
3. Select the MAC Encapsulation Routing (MER) radio button, and click
Next
.
The
following screen appears.
Enter information provided to you by your ISP to configure the WAN IP settings.
Notice: DHCP can be enabled for PVC in MER mode if
Obtain an IP address
automatically
is chosen.
Changing the default gateway or the DNS effects the
whole system. Configuring them with static values will disable the automatic
assignment from DHCP or other WAN connection.
If you configure static default gateway over this PVC in MER mode, you must enter
the IP address of the remote gateway in the "Use IP address". The "Use WAN
interface" is optional.
The ISP should provide the values that must be entered in the entry fields.
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Page 20 / 75
4. Click
Next
to display the following screen appears.
Enable NAT checkbox:
If the LAN is configured with a private IP address, the user
should select this checkbox.
The NAT submenu on the left side main panel will be
displayed after reboot.
The user can then configure NAT-related features after the
system comes up.
If a private IP address is not used on the LAN side, this checkbox
should be de-selected to free up system resources for better performance.
When the
system comes back after reboot, the NAT submenu will not be displayed on the left
main panel.
Enable Firewall checkbox:
If the firewall checkbox is selected, the firewall
submenu on the left side main panel will be displayed after system reboot.
The user
can then configure firewall features after the system comes up.
If firewall is not
used, this checkbox should be de-selected to free up system resources for better
performance.
When system comes back after reboot, the Firewall submenu will not
be displayed on the left main panel.
Enable IGMP Multicast:
Tick the checkbox to enable IGMP multicast (proxy).
IGMP
(Internet Group Membership Protocol) is a protocol used by IP hosts to report their
multicast group memberships to any immediately neighboring multicast routers.
Enable WAN Service:
Tick the checkbox to enable the WAN (ADSL) service.
If this
item is not selected, you will not be able to use the ADSL service.
Service Name:
This is User-defined.
19

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