Operational Commands
7210 SAS D, E, K OS Quality of Service Guide Page 167
mbs
Syntax mbs size [kbits|bytes|kbytes]
no mbs
Context config>qos>network>ingress>meter
Description Platforms Supported: 7210 SAS-D.
This command provides a mechanism to override the default MBS for the meter. The maximum burst size
parameter specifies the maximum burst size that can be transmitted by the source while still complying with
the CIR. If the transmitted burst is lower than the MBS value then the packets are marked as in-profile by the
meter to indicate that the traffic is complying meter configured parameters.
The no form of this command returns the MBS size to the default value.
Default 128kbits
Parameters size — Specifies the size parameter is an integer expression of the number of kilobits reserved for the meter.
For example, if a value of 100 KBits is desired, then enter the value 100. The bucket size is rounded off
to the next highest 4096 bytes boundary.
Values kbits : [4..16384 | default]
bytes : [512..2097152]
kbytes : [1..2048]
mode
Syntax mode mode
no mode
Context config>qos>network>ingress>meter
Description
This command defines the mode of the meter. The mode can be configured as Two Rate Three
Color Marker (trTCM1) or Single Rate Three Color Marker (srTCM). The mode command can be
executed at anytime.
The no form of the command sets the default mode to be trtcm1.
Default
trtcm1
Parameters trtcm1 — Implements the policing algorithm defined in RFC2698. Meters the packet stream and marks its
packets either green, yellow, or red. A packet is marked red if it exceeds the PIR. Otherwise, it is
marked either yellow or green depending on whether it exceeds or doesn't exceed the CIR. The trTCM1
is useful, for example, for ingress policing of a service, where a peak rate needs to be enforced
separately from a committed rate. Two token buckets are used, the CBS bucket and the MBS bucket.
Tokens are added to the buckets based on the CIR and PIR rates. The algorithm deducts tokens from
both the CBS and the MBS buckets to determine a profile for the packet.
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