This disclosure generally discloses a tunnel-level fragmentation and reassembly capability configured to support tunnel-level fragmentation and reassembly of a packet being transported via a tunnel between a tunnel source node and a tunnel destination node. The tunnel-level fragmentation and reassembly capability may be configured to support tunnel-level fragmentation and reassembly of packets in a manner tending to prevent reassembly errors, that could cause malformed packets or packet drops at the tunnel destination nodes, due to multiple parallel tunnel contexts of the tunnel which may correspond to multiple parallel entry points into the tunnel at the tunnel source node. The tunnel-level fragmentation and reassembly capability may be configured to support tunnel-level fragmentation and reassembly of packets within various types of communication networks, for various types of tunnels, or the like.