Quality of Service Guide ATM QoS Traffic Descriptor Profiles
Edition: 01 3HE 11014 AAAC TQZZA 399
• Rate < 1920K weight = 7
Everything above 1920K will be assigned a weight of 8.
Since the 7705 SAR operates in cells/second with one cell granularity, PIR and SIR values
programmed need to be converted to cells/second. When converting values to be used for
the scheduler, the result is rounded up to the next cell when required by conversion.
When any of SIR, PIR, or MIR is greater than the physical maximum port/channel capacity
for a given PVCC, then the maximum physical port/channel capacity is used in bandwidth
accumulation and when configuring the hardware for that PVCC.
Hardware-enforceable MBS is in the inclusive range of 3 to 256 000 cells on all 7705 SAR
ATM-capable adapter cards. Assigning an atm-td-profile with an MBS value outside of this
range to a SAP is blocked. As well, once an atm-td-profile is assigned to a SAP, the CLI will
block any change of the MBS value to a value outside of this range.
The no form of the command restores traffic parameters to their defaults for a given service
category.
Default Table 59 shows the ATM traffic parameter defaults.
Parameters sir-val — the Sustained Information Rate (including cell overhead) in kb/s
Values 0 to 4294967295
Table 59 ATM Traffic Parameter Defaults
Service Category Traffic Parameter Defaults
CBR:
PIR 0
CDVT 250
rt-VBR and nrt-VBR
PIR 4294967295
SIR 0
MBS 32
CDVT 250
UBR (note by default UBR is without MIR)
PIR 0
CDVT 250
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