Multiprotocol Label Switching Architecture (MPLS) Label Values
2002-11-08
2009-06-10
MPLS Label Values
IETF consensus
0
IPv4 Explicit NULL Label
1
Router Alert Label
2
IPv6 Explicit NULL Label
3
Implicit NULL Label
4-12
Unassigned
13
GAL Label
14
OAM Alert Label
15
Unassigned