Alcatel-Lucent OmniSwitch 6850-48 Cli Reference Manual page 2366

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The cir and pir bits and the cbs and pbs bytes parameter values may be entered as an integer (for
example, 10000) or with abbreviated units (for example, 10m).
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The cbs and pbs parameters are optional. If not specified, the switch uses 10K for these values by
default.
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This implementation of TCM supports two rate limiting modes: Single-Rate (srTCM) and Two-Rate
(trTCM). The srTCM mode marks packets based only on the CIR and the two burst sizes: CBS and
PBS. The trTCM mode marks packets based on both the CIR and PIR and their associated CBS and
PBS values.
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There is no explicit CLI command to configure the mode (srTCM or trTCM) in which the TCM meter
operates. Instead, the mode is determined by the CIR and PIR values configured for the policy action.
If the PIR value is greater than the CIR value, trTCM is used. If the PIR value is less than the CIR
value, srTCM is used.
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Configuring CIR and CBS is similar to configuring a maximum bandwidth. Configuring CIR and PIR
is similar to configuring maximum depth.
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The number of packets counted as a result of the counter color mode setting is displayed using the
show active policy rule meter-statistics command. These statistics are only shown for those rules that
are configured with a TCM policy action.
Examples
The following command examples configure srTCM (the default):
-> policy action A3 cir 10M
-> policy action A4 cir 10M cbs 4k
-> policy action A5 cir 10M cbs 4k pir 10M
-> policy action A6 cir 10M cbs 4k pir 10M pbs 4k
-> policy action a7 cir 5M cbs 2k counter-color green-nongreen
-> policy action A3 no cir
-> policy action A5 no pir
The following command examples configure trTCM (note that PIR is greater than CIR):
-> policy action A7 cir 10M cbs 4k pir 20M
-> policy action A8 cir 10M cbs 4k pir 20M pbs 40M
-> policy action a9 cir 5M cbs 1M pbs 10M pbs 2M counter-color green-yellow
-> policy action A7 no cir
Release History
Release 6.4.3; command was introduced.
page 33-146
QoS Policy Commands
OmniSwitch CLI Reference Guide June 2012