The success of “CLOS Fabric” in the DC space inspired Content Service Providers as well as other companies like Telcos and MSOs (Cable) to investigate the possibility of using similar concepts as building blocks of their WAN networks.
This article discusses motivation, applicability as well as limitations and impact on network operations when the CLOS fabric concept is applied to a WAN network. In subsequent articles, other aspects such as device selection, capacity and cable planning, routing control plane design and finally operation support toolset will be discussed.
Have you ever been sitting in the window seat of a plane while flying through the clouds? Isn’t it the coolest feeling, watching the vapor whip by the window? Today’s networks need an infusion of that sense of soaring, giving users the notion of flying effortlessly through the clouds. As a component of the cloud-grade networking solution, we’re announcing the Juniper Networks® PTX10008 Packet Transport Router. The PTX10008 provides 3Tbps per slot and can have 240 100GbE interfaces in a single chassis. It enables service and cloud providers to build a core architecture that optimizes for MPLS Label Switch Router (LSR), Internet peering, backbone, and optical convergence applications and deployments.
The term VOQ has been over-used and evolved over time. So while all routing vendors claim a VOQ architecture, they all differ in the actual implementation. These differences are quite substantial and having meaningful impcact on the performance and cost of the system. Much of this evolution has occurred to try and eliminate shortcoming in their systems, such as HOLB problems.
This part will go thru various VOA implementations and illustrate their strengths and weaknesses.