https://www.juniper.net/documentation/us/en/software/junos/mpls/topics/topic-map/lsp-routers.html
In an MPLS network, the types of routers include ingress routers (where the MPLS labels are first applied), egress routers (where MPLS labels are removed), and transit routers (which switch MPLS-labeled packets through the MPLS network). Peering routers and aggregation routers are not specific types of MPLS routers; they are general network terms.
[References:, Juniper Networks documentation on MPLS: MPLS Fundamentals, , ]
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