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17-8 Preliminary May 9, 2000 APX 8000/MAX TNT/DSLTNT Physical Interface Configuration Guide
Configuring DSL Connections (DSLTNT)
Configuring data transfer rates
To configure the maximum transfer rate for the 24-port SDSL card:
1 Open the SDSL profile:
admin>read sdsl {2 1 7}
SDSL/{ shelf-2 slot-1 7 } read
2 Enable the line:
admin>set enabled=yes
3 List the Line-Config profile:
admin> list line-config
[in SDSL/{ shelf-2 slot-1 7 }:line-config]
trunk-group = 0
nailed-group = 1
activation = static
call-route-info = { any-shelf any-slot 0 }
data-rate-mode = singlebaud
max-rate = 784000
unit-type = coe
4 Specify a maximum rate:
admin> set max-rate=1552000
5 Write the profile:
admin> write
Configuring per-session data transfer rates
The DSL cards support configuring per-session data transfer rates for individual DSLPipe
customer premises equipment (CPE) user sessions.
You can use two different methods to configure the per-session data transfer rates for DSL
connections: modem rate control and data-rate limits.
In modem rate control, the DSLTNT initially establishes a CPE session at the maximum
available data rate. If the CPE specifies a lower data rate, the DSLTNT terminates the session,
then reestablishes it at the rate specified by the CPE . The next time the CPE initiates a
connection, the DSLTNT does not retrain if the initial rate is the same or lower than the rate
used previously for that CPE.
In data-rate limit, you specify transmit and receive data rate limits that apply to logical sessions
on the DSL line. Data-rate limits enable multiple individual sessions on each DSL line.
Following are the Connection profile parameters for configuring per-session data rates:
Parameter/RADIUS attribute Specifies
Ses-Rate-Type/
Ascend-Dsl-Rate-Type (92)
Type of DSL connection to rate control. Disabled (the
default) means that modem rate control is not active
for the connection. Currently, Disabled and
ADSL-CAP settings are the only supported options.