# mpls copy-upc-to-exp

#### Syntax

[ no ] mpls copy-upc-to-exp

#### Release Information

Command introduced in JunosE Release 7.1.0.

#### Description

Sets the initial value of the EXP bits in pushed or swapped labels to the user packet class value associated with the packets. This command does not modify EXP bits in labels already in the received MPLS packet. The no version restores the default condition, where the EXP bits are set to 000 (for non-MPLS/IP traffic) or to the IP precedence value from the TOS field of the IP packet header (for IP traffic).

#### Mode

Global Configuration