# mpls preserve-vpn-exp

#### Syntax

[ no ] mpls preserve-vpn-exp

#### Release Information

Command introduced before JunosE Release 7.1.0.

#### Description

Prevents the value of the EXP bits for a VPN label from being modified by either a per-LSP policy for the outer labels or per-VR traffic class/color rules. In the default condition, per-LSP policies or per-VR rules modify all labels in a given label stack to have the same value for the EXP bits. The no version restores the default condition.

#### Mode

Global Configuration