What Does Committed Access Rate (CAR) Mean?
Committed access rate (CAR) is a feature from Cisco that is used in network optimization and security. It limits the input or output traffic rate on an interface or sub-interface based on criteria such as IP precedence, IP access list or incoming interface. When the traffic reaches the set limit, CAR specifies certain actions to be carried out. These actions can be configured using CAR commands that use the values of traffic rate limit, burst rate allowed and the action to be performed when the traffic reaches or exceeds the set limit.
Techopedia Explains Committed Access Rate (CAR)
Committed access rate is similar to traffic shaping, where the incoming or outgoing traffic rate is limited according to certain criteria. CAR differs from traffic shaping in the handling of excess data when there is a burst of data. While traffic shaping buffers the excess data, CAR performs an exceed action that has been specified by the user.
