“Segment routing architecture seeks the right balance between distributed intelligence and centralized optimization,” wrote a Cisco spokesperson in an email to SDxCentral.
Segment routing runs natively on an MPLS data plane, and it can coexist with existing MPLS infrastructure. According to Cisco, the technology permits a unified forwarding plane for end-to-end policies to be set across independent metro, WAN, and data center domains.
“No specific protocol is required; it’s just simple extensions to current routing protocols,” said Jonathan Davidson, general manager of Cisco’s service provider networking unit, in a blog posting. “Sensitive traffic can be directed over paths that match certain latency requirements without having to maintain any state in the network fabric. Vodafone Germany is currently witnessing a 50 percent latency reduction.”
Cisco claims its segment routing makes network infrastructure SDN-ready.
Vodafone Germany’s parent company the Vodafone Group is conducting a virtualization project internally named “Project Ocean.” It’s a group-wide transformation to virtualize its network and compute infrastructure and to use cloud technology.