Operation Manual

Cerberus ADSL2 Wi-Fi Plus (P6331-6)
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is an estimated factor for the effective data transfer rate for a ADSL LINE from LAN to WAN.
For WAN-to-LAN, it is 0.85 to 0.8).
Data Ratio – percentage for the data rate to be controlled by this policy. As above FTP server
examples, it is 20.
Rate Type – We provide 2 types here:
• Fixed (Maximum): specify a fixed data rate for this policy. It also is the maximal rate for
this policy. As above FTP server example, you may want to “throttle” the outgoing FTP
speed to 20% of 256K and limit to it, you may use this type.
• Guaranteed (Minimum): specify a minimal data rate for this policy. For example, you want
to provide a guaranteed data rate for your outside customers to access your internal FTP
server with, say at least, 20% of your total bandwidth. You can use this type. Then, if
there is available bandwidth that is not used, it will be given to this policy by following
priority assignment.
Priority for Non-used Bandwidth – Specify the priority for the bandwidth that is not used. For
examples, you may specify two different QOS policies for different applications. Both
applications need a minimal bandwidth and need more bandwidth, beside the assigned one, if
there is any available/non-used one available. So, you may specify which application can have
higher priority to acquire the non-used bandwidth.
• High
• Normal – The default is normal priority.
• Low
For the sample priority assignment for different policies, it is seved in a First-In-First-Out way.
DSCP Marking – Differentiated Services Code Point (DSCP), it is the first 6 bits in the ToS
byte. DSCP Marking allows users to classify traffic based on DSCP value and send packets to
next Router.
DSCP Mapping Table
Disabled None
Best Effort Best Effort (000000)
Premium Express Forwarding (101110)
Gold service (L) Class 1, Gold (001010)
Gold service (M) Class 1, Silver (001100)
Gold service (H) Class 1, Bronze (001110)
Silver service (L) Class 2, Gold (010010)
Silver service (M) Class 2, Silver (010100)
Silver service (H) Class 2, Bronze (010110)
Bronze service (L) Class 3, Gold (011010)
Bronze service (M) Class 3, Silver (011100)
Bronze service (H) Class 3, Bronze (011110)
Local Machine IPs – The IP address values for Local LAN machines you want to control. (For
IP packets from LAN to WAN, it is the source IP address. For IP packages from WAN to LAN,
it is the destination IP address.)
Remote Machine IPs – The IP address values for Remote WAN machines you want to
control. (For IP packets from LAN to WAN, it is the destination IP address. For IP packages
from WAN to LAN, it is the source IP address.)
Local Application Ports – The Application port values for local LAN machines you want to
control. (For TCP/UDP packets from LAN to WAN, it is the source port value. For TCP/UDP
packets from WAN to LAN, it is the destination port value.)
Remote Application Ports – The Application port values for remote machines you want to
control. (For TCP/UDP packets from LAN to WAN, it is the destination port value. For
TCP/UDP packets from WAN to LAN, it is the source port value.)
Schedule Time – Schedule your QOS policy.