Technical Networking Army

Preface: Orange, a global telecoms company, uses EDIA (Ethernet Dedicated Internet Access) at its HQs in London , Berlin and Paris to ensure each site has guaranteed, high-speed and low-latency internet for critical business apps like Office 365, cloud collaboration tools and secure remote access. These EDIA circuits provide dedicated bandwidth with SLA-backed performance so they’re perfect for HQs that can’t afford downtime or performance degradation. For its branch offices and regional sites across Europe, Orange has a Hybrid WAN architecture where MPLS lines (for latency-sensitive traffic like VoIP and internal systems) and broadband/EDIA connections (for general internet traffic) are combined through an SD-WAN platform , so traffic is intelligently routed and fails over seamlessly during outages. Orange also connects its data centers in Paris and Berlin with EVPN-VXLAN links over its MPLS backbone , so there’s Layer 2 and Layer 3 connectivity between virtualized environm...

  Preface: In modern service provider and enterprise networks, L2VPN services like VPLS, VPWS and EVPN provide transparent, low latency connectivity across geographically distributed sites. However, these services are prone to Layer 2 traffic storms - broadcast, multicast and unknown unicast floods which can originate from a misbehaving customer edge (CE) device or unintended loops in the network. These storms can quickly propagate through the provider edge (PE) infrastructure, saturate link bandwidth, overload CPU and memory and potentially cause widespread service degradation or outages not just for the offending customer but for multiple tenants sharing the same network. To address this critical vulnerability, storm control is implemented as a protective measure on PE interfaces, especially on customer facing ports. By monitoring and rate limiting specific Layer 2 traffic types, storm control stops the storm at its source. This ensures only a permissible amount of broadcast...