Deutsche Telekom explains its IP-over-DWDM thinking

Telecom operators are always seeking better ways to run their networks. In particular, operators regularly scrutinise how best to couple the IP layer with their optical networking infrastructure.

The advent of 400-gigabit coherent modules that plug directly into an IP router is one development that has caught their eye.

Placing dense wavelength division multiplexing (DWDM) interfaces directly onto an IP router allows the removal of a separate transponder box and its interfacing.

IP-over-DWDM is not a new concept. However, until now, operators have had to add a coherent line card, taking up valuable router chassis space.

Werner Weiershausen

Now, with the advent of compact 400-gigabit coherent pluggables developed for the hyperscalers to link their data centres, telecom operators have realised that such pluggables also serve their needs.

BT will start rolling out IP-over-DWDM in its network this year, while Deutsche Telekom has analysed the merits of IP-over-DWDM.

"The adoption of IP-over-DWDM is the subject of our techno-economical studies," says Werner Weiershausen, senior architect for the transport network at Deutsche Telekom.

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The Blue Planet platform's ongoing automation journey

Vodafone UK is one operator that has recently chosen Ciena's Blue Planet for the management of its optical and IP networks. An interview with Ciena to understand what the Blue Planet network automation tool does.

Having some knowledge of a telco's operations helps in understanding the role of a network automation platform. So says Kevin Wade, senior director and product marketing team leader at Ciena Blue Planet.

Source: Ciena

Service providers, like any business, have an operational infrastructure that begins with business processes. For a service provider, the process starts with a connectivity service request. The business processes capture the customer's order and deliver the requested service.

Once up and running, the service must be monitored and managed to ensure the service level agreement is upheld.

"Today, these processes are highly manual," says Wade. "Automation is being looked at and deployed more extensively to simplify these processes."

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