Downstream rate

The downstream rate is measured in kilobits and includes everything arriving at the router over the WAN Ethernet. For example, on a T-DSL connection with guaranteed 768 kbit downstream, the upstream rate negotiated by the modem is 864 kbit. This still includes an overhead typical for this type of connection, which results from the modem using ATM as the transport protocol. If we adjust the 864 kbit to allow for the overhead that results from the structure of an ATM cell (48 bytes of payload for a cell length of 53 bytes), we arrive at 864 * 48/53 = 792 kbit gross downstream rate, which is transferred from the modem to the router over Ethernet. If data rates negotiated by the modem are unknown, it is possible to multiply the guaranteed data rates by 56/55 to approximate the gross data rates.

SNMP ID:
2.23.4.18 
Console path:
Setup > Interfaces > DSL
Possible values:

Max. 6 characters from [0-9]

Special values:
0
No restriction on the received data traffic.
Default:
empty

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