Bell Lab’s Future X Network and Network Function Interconnect

The last major carrier network transformation happened in 2000s when carriers all over the world replaced their multiple network silos comprising TDM, ATM, Frame Relay, and IP etc… for their voice, video and data traffic by a single QoS-enabled networking technology called MPLS. The new QoS-enabled MPLS technology allows a carrier to: Save capex and … Continue reading Bell Lab’s Future X Network and Network Function Interconnect

BGP EVPN and All-Active Multi-Homing Ethernet Segment

BGP MPLS-Based Ethernet VPN or BGP EVPN (RFC 7432) offers more scalable, flexible (e.g., per flow and service load balance) and resilience (e.g., Multi-Home) Overlay layer 2 (L2) and layer 3 (L3) network services than the older TLDP and MP-BGP VPN based L2 and L3 MPLS network services designed in 2000s. BGP EVPN supports the … Continue reading BGP EVPN and All-Active Multi-Homing Ethernet Segment

MultiPath TCP VM and Network Function Virtualization

Many consumer network devices such as smartphones have multiple network connections such as WiFi and 4G LTE. RFC 6824 defines MultiPath TCP (MPTCP) protocol that can enable two devices with multiple network transports to increase their TCP throughput by dividing a single stream of TCP traffic into many MPTCP subflows over the available network transports. … Continue reading MultiPath TCP VM and Network Function Virtualization

Extending Private Data Center to Azure Cloud – Part 2

In Part 1 of this article, I talked about network and system design issues related to scalability, redundancy and security for deploying a 3-Tier application in a private Data Center (DC). It is more a theory-only article. Parts 2 and 3 of this article are more hand-on where we will deploy this web application and … Continue reading Extending Private Data Center to Azure Cloud – Part 2

Extending Private Data Center to Azure Cloud – Part 1

Introduction Amazon's AWS is the leader in public Cloud services bringing 17.5 billions USD revenues with 25% profit margin for Amazon in 2017. The AWS business is growing at a whopping rate of 49% in 2018. This is a very good testimonial that companies all over the world are embracing cloud technology in their IT strategy … Continue reading Extending Private Data Center to Azure Cloud – Part 1

End-to-End Network Service QoS – Part 2

In Part 1 of this article, I talked about how to design access QoS with sap-ingress and sap-egress QoS constructs from Nokia's Service Router for a coast-to-coast ePipe MPLS network service to support triple-play traffic. I showed how to classify the triple-play traffic at the ePipe's sap-ingress and map the traffic onto different Forwarding Classes (FC) for the … Continue reading End-to-End Network Service QoS – Part 2

End-to-End Network Service QoS – Part 1

Before the arrival of MPLS and the advance in silicon technology for ASIC and network processors in early 2000s, many carriers ran multiple single-purpose networks such as TDM, ATM and IP to support their video, voice and data network services. Some enterprises attempted to consolidate their triple-play traffic onto a single IP network. However, due to the silicon technology and QoS … Continue reading End-to-End Network Service QoS – Part 1