Traffic Policing for Bandwidth Limiting per vlan sub-interface on Cisco ASR

Summary: 

This example was implemented on Cisco ASR1001 running IOS Version 15.1(1)S

Traffic Policing for Bandwidth Limiting per vlan sub-interface

Problem or Goal: 

If you have a router aggregating different client circuits on one physical interface but segregated by vlans, you will find yourself in a position where you have to rate limit each client according to the bandwidth they are paying for. To achieve this on a cisco router, here is example config. 

Cause: 

Different fixed-line internet clients/customers aggregated on one physical interface but identified by separate VLANs. 

see example topology below

Solution: 

// Enter configuration mode

#config t

// The commands below will create a policy to rate limit the client to 1Mbps

#policy-map Limit-1Mb

#class class-default

#police 1024000 192000 conform-action transmit exceed-action drop

#end

// The commands below will create a policy to rate limit the client to 2Mbps

#config t

#policy-map Limit-2Mb

#class class-default

#police 2048000 384000 conform-action transmit exceed-action drop

#end

// Now we need to apply the policy under the sub-interface per client

//For example the client with vlan 200 will be limited to 1Mbps up/down

#config t

#interface GigabitEthernet0/0/1.200

#service-policy input Limit-1Mb

#service-policy output Limit-1Mb

#end

//For example the client with vlan 300 will be limited to 2Mbps up/down

#config t

#interface GigabitEthernet0/0/1.300

#service-policy input Limit-2Mb

#service-policy output Limit-2Mb

#end

#wr

Problem Solved?

Yes