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DSCP Mapping Table
ADSL2+ Router Standard DSCP
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)
Rate Type: 2 types are provided:
~ Limited (Maximum): specify a limited 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.
Ratio: 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 is an estimated factor for the effective data transfer rate for an ADSL LINE from LAN to
WAN. For WAN-to-LAN, it is 0.85 to 0.8).
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