Difference: OTN is an optical transmission network, which evolved from traditional wavelength division technology. It mainly adds intelligent optical switching functions and can realize optical cross-connection through data configuration without manual fiber jumpers; while PTN is a packetization network. The transmission network is the product of the integration of the transmission network and the data network. The main protocol is TMPLS.
The operating environment of this tutorial: Windows 7 system, Dell G3 computer.
PTN: Packet transmission network;
PTN is an enhanced version of MSTP, and the channel has flexible functions. PTN is tailor-made for transport networks and requires network management to configure routing. It does not have IP functions, which means that core network equipment needs to be configured with a netlist. IPRAN, another brother of PTN, has taken up the banner of IP and can calculate routes by itself. PTN separates the control plane and transport plane, while IPRAN is still self-negotiated by the device. PTN plus SDN tools are even more powerful.
PTN is the product of the integration of transport network and data network. The main protocol is TMPLS, which has less IP layer and more overhead messages than network equipment. Ring networking and protection can be achieved. It is a carrier-grade data network (traditional data networks cannot meet carrier-grade requirements). The transmission bandwidth of PTN is smaller than that of OTN. Generally, the maximum group channel bandwidth of PTN is 10G, OTN single wave 10G, group channel can reach 400G-1600G, and the latest technology can reach 40G single wave. It is the backbone of the transmission network.
OTN: Optical transmission network;
OTN is a network that uses optical transmission and works for the lowest layer. It can transmit PTN and IPRAN services. Its function is to make the optical transmission capacity larger, the speed faster, the distance longer, and the transmission more reliable.
The rate of OTN is from 10G/40G/100G/200G/400G, or even 1T later. The frame structure of OTN is OTMn.m, where n is the wave number and m is the rate, where m is the often mentioned 10G to 100G. Specifications.
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