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Comment 5 -2 Length (bits 10 to 15): If the PW payload size could be less than 64 bytes, and is either variable, or unknown to the CE-bound PE, the length field is used to indicate the size of a PW payload that might have been padded to the minimum Ethernet MAC frame size during its transit across the PSN. If the MPLS payload (defined as the PW-CW + the PW payload + any additional PW headers) is less than 64 bytes, the length MUST be set to the length of the MPLS payload. Otherwise the length MUST be set to 0. |