How many bits of the MPLS header are used for the label field?
How many bits of the MPLS header are used for the label field?
The MPLS (Multiprotocol Label Switching) header includes a label field that is used to forward packets. This label field is 20 bits long, which ensures that the correct option for the given question is 20.
Label field—The primary field of the MPLS header is the MPLS label itself. The label field carries the label used to forward the packet inside and is 20 bits long