Police - Cisco Catalyst 3550 Command Reference Manual

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
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, and the burst-byte option cannot exceed 2000000 bytes. 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, refer to the software configuration guide for this release.
Catalyst 3550 Multilayer Switch Command Reference
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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
2000000000.
Specify the normal burst size in bytes. The range is 8000 to 512000000.
(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 first introduced.
Chapter 2 Cisco IOS Commands
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