Operation Manual

Cerberus ADSL2 Wi-Fi Plus (P6331-6)

• LAN to WAN – You want to control the traffic flow from the local network to the outside

world. E.g., you have a FTP server inside the local network and you want to have a

limited traffic rate controlled by the QOS policy. So, you need to add a policy with LAN to

WAN direction setting.

• WAN to LAN – Control Traffic flow from the WAN to LAN. The connection maybe either

issued from LAN to WAN or WAN to LAN.)

Assigned Bandwidth Ratio – This field shows the assigned bandwidth ratio in percentage for

a QOS policy. If WAN connection to internet is established, the estimated transfer rate will be

shown in kbps. You may specify a fixed transfer rate or Minimum Guaranteed Rate with

priority for non-used bandwidth.

Non-Assigned Bandwidth Ratio – This field shows the available bandwidth ratio, for LAN to

WAN and WAN to LAN, that has not yet assigned.

Add – Press this button to add a new QOS policy.

Edit / Delete – Before using these buttons to edit or delete a policy, please select one policy

you want to edit/delete from the radio option.

Apply – After you have configured the policies, you can press this button to apply the

configuration. If you want to make the change persistent in flash, choose Save Config to

Flashin the left windows to save it into flash.

When you press Add or Edit buttons described above, the following page will show up in your

browser. You can use it to define a QOS policy.

Controlled Traffic Flow – Specify the traffic flow you want to control. For GRE protocol, there

is no need to specify the IP addresses or Application ports in this page. For other protocols, at

least one value shall be given.

Packet type – The packet type will be controlled. For GRE protocol, there is no need to

specify the IP addresses or Application ports in this page. For other protocols, at least one

value shall be given.

• ANY – No specified protocol type is specified.

• TCP

• UDP

• ICMP

• GRE – For PPTP VPN Connections.

Assigned Data rate – Assign the data ratio for this policy to be controlled. For examples, we

want to only allow 20% of the total data transfer rate for the LAN-to-WAN direction to be used

for FTP server. Then we can specify here with data ratio = 20. If you have ADSL LINE with

256K/bps.rate, the estimated data rate, in kbps, for this rule is 20%*256*0.9 = 46kbps. (For 0.9