Adjusting the Data Rate Reported by ANCP for DSL Lines
When a DSLAM calculates the data rate, it ignores
additional headers on the DSL line. When ANCP reports the upstream
data rate (L2C Type 4 Sub-type 129) or the downstream data rate (L2C
Type 4 Sub-type 130), it includes the headers in its calculation and
therefore reports a slightly higher value. This discrepancy causes
the QoS shaping rate to be slightly higher than the actual rate.
You can use the adjustment-factor command to set a percentage value ANCP applies to the data rate
to generate a more accurate value that is reported to AAA whenever
AAA requests the data rate from ANCP.
ANCP does not report the calculated data rate to
RADIUS or to L2TP.
adjustment-factor
Use to configure a QoS adjustment factor that is applied
to the upstream data rate and downstream data rate reported by ANCP
for a DSL type. The adjustment factor is used to generate an accurate QoS
shaping rate.
The factor is applied for all subscribers that use the
specified DSL line type
Example
host1(config-l2c)#adjustment-factor adsl1
45
host1(config-l2c)#adjustment-factor adsl2
55
host1(config-l2c)#adjustment-factor adsl2+
67
host1(config-l2c)#adjustment-factor vdsl 91
host1(config-l2c)#adjustment-factor vdsl2
55
host1(config-l2c)#adjustment-factor sds 12
Use the no version to restore
the default condition, wherein no adjustment factor is applied to
the ANCP-reported value. This command has the same effect as applying
an adjustment factor of 100 to a DSL line type.
