Help Me with Policing configuration

[ShafiKappu]

I have a 1 Mbps link with below policing configurations and Please clarrify below points.

 1. Please help me to understand why we need a "exceed-action drop " command after police command because policer by default its drops the packets. 

2. If link is not congested then how much bandwidth will take by my MAIL & PROXY

policy-map BW_RESTRICTION

class MAIL_PROXY

   police cir percent 30

     exceed-action drop

class AV_SHAPING

   police cir percent 10

     exceed-action drop

[Joseph W. Doherty]

#1 If exceed drop is the default, then you shouldn't need to add it, although sometimes entering a statement w/o defaults will have the defaults show in the config.
#2 The policers, with the exceed drop, will always limit the traffic to the specified rate regardless of interface congestion.

[Julio E. Moisa · Accepted solution]

Hi

Police works discarding packets if they are exceeding the CIR, now Police allow a little burst if it exceed the bandwidth allowed, if you don't specify it will create an automatic burst. Now the exceed-action drop will drop packets if it is exceeded. This is a way to avoid consumpt more of the bandwidth granted.