Quality of Service Guide ATM QoS Traffic Descriptor Profiles
Edition: 01 3HE 11014 AAAC TQZZA 397
Changing the service category of a profile will reset all traffic attributes to their
defaults (see the traffic command) and will cause reprogramming of the data path
(with a small impact on user traffic) and a reset of VC statistics for all VCs using this
traffic descriptor profile.
shaping
Syntax [no] shaping
Context config>qos>atm-td-profile
Description This command determines whether egress shaping should occur. Shaping is only applied in
the egress direction.
Default The default is determined by the service category. Table 57 describes default shaping values.
Table 56 ATM Service Categories
Service Category Description
CBR Constant Bit Rate
rt-VBR Real-time Variable Bit Rate
nrt-VBR Non-real-time Variable Bit Rate
UBR Unspecified Bit Rate without Minimum Desired Cell Rate (defined
by specifying service category to be ubr, and MIR of 0)
UBR (with MIR) Unspecified Bit Rate with non-zero Minimum Desired Cell Rate
(defined by specifying service category to be ubr, and MIR > 0)
Table 57 Default Shaping Values
Applicable Service
Category
Default Shaping
Value
Comments
UBR Disabled Shaping cannot be enabled
CBR Enabled Shaping cannot be disabled
rt-VBR Enabled Shaping cannot be disabled
nrt-VBR Enabled Shaping cannot be disabled
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