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Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco IOS XE 3.9.xE and IOS 15.2(5)Ex
Chapter 44 Configuring Quality of Service
Configuring VSS QoS
Attaching a Policy Map to an Interface
To create a policy map, enter this command:
Policing
The supervisor engine supports policers in the following operation modes:
•
Single Rate Policer Two Color Marker
This kind of policer is configured with just the committed rate (CIR) and normal burst and it has
only conform and exceed actions.
•
Single Rate Three Color Marker (srTCM) (RFC 2697)
•
Two Rate Three Color Marker (trTCM) (RFC 2698)
•
Color Blind Mode
Policing accuracy of 0.75% of configured policer rate.
The engine supports 16384 (16 x 1024, 16K) single rate, single burst policers. 16K policers are
organized as 8 banks of 2K policers. The policer banks are dynamically assigned (input or output
policer bank) by the software depending on the QoS configuration. So, the 16K policers are
dynamically partitioned by software as follows:
–
0 Input Policers and 16K Output Policers
–
2K Input Policers and 14K Output Policers
–
4K Input Policers and 12K Output Policers
–
6K Input Policers and 10K Output Policers
–
8K Input Policers and 8K Output Policers
–
10K Input Policers and 6K Output Policers
–
12K Input Policers and 4K Output Policers
–
14K Input Policers and 2K Output Policers
–
16K Input Policers and 0 Output Policers
These numbers represent individual policer entries in the hardware that support a single rate and burst
parameter. Based on this, a switch supports the following number of policers:
•
16K Single Rate Policer with Single Burst (Two Color Marker)
Command
Purpose
Switch(config)#
interface
{vlan
vlan_ID
|
{
fastethernet
|
gigabitethernet
}
slot
/
interface
| Port-channel
number
}
Selects the interface to configure.
Switch(config-if)# [
no
]
service-policy
input
policy_map_name
Attaches a policy map to the input direction of the
interface. Use the no keyword to detach a policy
map from an interface.
Switch(config-if)#
end
Exits configuration mode.
Switch# show policy-map interface {vlan
vlan_ID
| {
fastethernet
|
gigabitethernet
}
slot/interface}
Verifies the configuration.
Summary of Contents for Catalyst 4500 Series
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