On 31/Jul/19 16:48, Etienne-Victor Depasquale wrote:


"I'm trying to identify trends in adoption of transport technology in the metro-area. If legacy is SDH/SONET and its successor in circuit transport is OTN, what are network providers implementing and planning to implement as transport technology in the metro area? For example, are packet transport technologies being considered as a replacement? As a complementary technology? By packet transport technologies, I am thinking of PBB-TE and MPLS-TP but ultimately, the problem regards how network providers are balancing circuit-transport and packet-transport technologies in current and planned deployments."

Ethernet has been ruling the Metro for some time now. The control and forwarding planes that drive that are a decision left to the operator.

There is a healthy sharing of the pie between DWDM and packet to drive these Ethernet Metro's, depending on use-case, the operators' business model, whether it's an ISP or a content network, e.t.c.

In all, SDH/SONET Metro networks, while not completely gone, are certainly on the decline.

As far as OTN goes, I've always heard more talk than actual biting by customers. In our market, every time a customer has shown interest in OTN, they end up going for EoDWDM, all the time.

Mark.