Police - Cisco Catalyst 3550 Command Reference Manual
Multilayer switch
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police
police
Use the police policy-map class configuration command to define a policer for classified traffic. Use the
no form of this command to remove an existing policer.
Syntax Description
rate-bps
burst-byte
exceed-action drop
exceed-action
policed-dscp-transmit
Defaults
No policers are defined.
Command Modes
Policy-map class configuration
Command History
Release
12.1(4)EA1
12.2(25)SE
Usage Guidelines
You can configure up to 128 policers on ingress Gigabit-capable Ethernet ports.
You can configure up to eight policers on ingress 10/100 Ethernet ports.
You can configure up to eight policers on egress ports.
Although the command-line help strings show a large range of values, the rate-bps option cannot exceed
the configured port speed. If you enter a larger value, the switch rejects the policy map when you attach
it to an interface.
To return to policy-map configuration mode, use the exit command. To return to privileged EXEC mode,
use the end command.
Policing uses a token bucket algorithm. You configure the bucket depth (the maximum burst that is
tolerated before the bucket overflows) by using the burst-byte option of the police policy-map class
configuration command or the mls qos aggregate-policer global configuration command. You
configure how quickly (the average rate) the tokens are removed from the bucket by using the rate-bps
option of the police policy-map class configuration command or the mls qos aggregate-policer global
configuration command. For more information, see the software configuration guide for this release.
Catalyst 3550 Multilayer Switch Command Reference
2-280
police rate-bps burst-byte [exceed-action {drop | policed-dscp-transmit}]
no police rate-bps burst-byte [exceed-action {drop | policed-dscp-transmit}]
Specify average traffic rate in bits per second (bps). The range is 8000 to
1000000000.
Specify the normal burst size in bytes. The range is 8000 to 2000000.
(Optional) When the specified rate is exceeded, specify that the switch drop
the packet.
(Optional) When the specified rate is exceeded, specify that the switch
change the Differentiated Services Code Point (DSCP) of the packet to that
specified in the policed-DSCP map and then send the packet.
Modification
This command was introduced.
The ranges for rate-bps and burst-bps was changed.
Chapter 2
Catalyst 3550 Switch Cisco IOS Commands
OL-8566-02
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