What is the purpose of the MPLS TC field (EXP bits)?
What is the purpose of the MPLS TC field (EXP bits)?
The MPLS TC field, previously known as the EXP bits, is used to carry Quality of Service (QoS) classification. This field was designed to help manage traffic prioritization and ensure that different types of service get the appropriate handling within the network.
Traffic Class (TC) Field—The Traffic Class field was renamed from the Experimental (EXP) field in RFC 5462. It was always intended for carrying quality of service (QoS)