MPLS EXP - Explicit-null Labels

The default classification for explicit-null packets is based on the payload (IPv4 or IPv6 DSCP bits). Devices support a new CLI option, explicit-null-cos inet|inet6 at the [edit forwarding-options] hierarchy level. With this configuration, you can classify packets based on the MPLS EXP value rather than on the payload, thus preserving the MPLS classification of the packet.