An
egress router is a
Label Switch Router that is an end point (drain) for a given
Label Switched Path (LSP). An egress router may be an
ingress router or an intermediate router for any other LSP(s). Hence the role of egress and ingress routers is LSP specific. Usually, the
MPLS label is attached with an IP packet at the ingress router and removed at the egress router, whereas label swapping is performed on the intermediate routers.