Chapter 7: Quality of Service (QoS)
Configuring Policers (Rate Metering)
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Page 7-15
Table 39
Policer Profile Parameters
Parameter
Definition
Profile ID
A unique ID for the policer profile. You can choose from any unused value
from 1 to 250. Once you have added the profile, you cannot change the
Profile ID.
Description
A description of the policer profile.
Policer type
Read-only. The type of policer. Always set to MEF-TRTCM.
CIR
Enter the Committed Information Rate (CIR) for the policer, in bits per
second. Permitted values are 0, or 64,000 through 1,000,000,000 bps. If
the value is 0, all incoming CIR traffic is dropped.
CBS
Enter the Committed Burst Rate (CBR) for the policer, in Kbytes.
Permitted values are 2 through 128 Kbytes.
EIR
Enter the Excess Information Rate (EIR) for the policer, in bits per second.
Permitted values are 0, or 64,000 through 1,000,000,000 bps. If the value
is 0, all incoming EIR traffic is dropped.
EBS
Enter the Excess Burst Rate (EBR) for the policer, in Kbytes. Permitted
values are 2 through 128 Kbytes.
Color mode
Select how the policer treats packets that ingress with a CFI or DEI field
set to 1 (yellow). Options are:
Color Aware
– All packets that ingress with a CFI/DEI field set to 1
(yellow) are treated as EIR packets, even if credits remain in the CIR
bucket.
Color Blind
– All ingress packets are treated as green regardless of their
CFI/DEI value. A color-blind policer discards any former color decisions.
Coupling flag
Select
Enable
or
Disable
. When enabled, frames that ingress as yellow
may be converted to green when there are no available yellow credits in
the EIR bucket.
Coupling Flag
is only relevant in Color Aware mode.
Editing a Policer Profile
To edit a policer profile, select the profile in the Police Profile table and click
Edit
. The Policer Profile Table Edit
page opens.
The Policer Profile Table - Edit page is identical to the Policer Profile Table - Add page (
). You can edit any
parameter that can be configured in the Policer Profile Table Add page, except the
Profile ID
.
Deleting a Policer Profile
You cannot delete a policer profile that is attached to a logical interface. You must first remove the profile from the
logical interface, then delete the profile. See
Assigning Policers to Interfaces
To delete a policer profile, select the profile in the Police Profile table and click
Delete
. The profile is deleted.