Billion Electric Company BiPAC 7202G User Manual download pdf (Page 66)

 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 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

1 2 ... 61 62 63 64 65 66 67 68 69 70 71 ... 94 95

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Billion Electric Company BiPAC 7202G User Manual Page 66