Cisco Support Community
Community Member

Different between flow and aggregate

Microflow policers are defined within the policy map configuration, just like per-interface aggregate policers. In the example below, every flow from host coming into VLAN 2 will be policed to 100 Kbps. All traffic from will be policed to 500 Kbps aggregate. VLAN 2 includes interfaces fa4/11 and fa4/12.

mls qos


access-list 1 permit


class-map match-all host_2_2

match access-group 1


policy-map host

class host_2_2

police flow 100000 2000 conform-action transmit exceed-action

police 500000 2000 2000 conform-action transmit exceed-action drop


interface fa4/11

mls qos vlan-based


interface fa4/12

mls qos vlan-based


interface vlan 2

service-policy input host

What is the major differences between flow and aggregate policers?


Re: Different between flow and aggregate

QoS applies the bandwidth limits specified in an aggregate policer cumulatively to all flows in matched traffic. You can create up to 1023 aggregate policers. You can create two kinds of aggregate policer named and per-interface.

QoS applies the bandwidth limit specified in a microflow policer separately to each flow in matched traffic.

* You can create microflow policers with up to 63 different rate and burst parameter combinations.

* You create microflow policers in a policy map class with the police flow command.

* You can microflow police IP, IPX, and MAC-Layer traffic.

During microflow policing, QoS aggregates MAC-Layer flows that have the same source and destination MAC-Layer addresses. By default, microflow policers only affect traffic routed by the MSFC.

CreatePlease to create content