Service Provider Networking

Service-provider backbone, aggregation and provider edge routing are the most critical layers in a service provider network. VelOS SP delivers the full IP/MPLS protocol stack, multi-service delivery with Ethernet Virtual Private Network (EVPN), Layer 2 VPN (L2VPN), Layer 3 VPN (L3VPN), and Virtual Private LAN Service (VPLS) with seamless integration into existing OSS/BSS and transport infrastructure through open standards.

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Carrier-Grade Aggregation and PE Routing on Open Hardware

About Evollabs

Evollabs Tech delivers a next-generation service provider aggregation environment designed for telecom operators, ISPs, and managed service providers building scalable metro and provider edge networks. Built on deep IP/MPLS and carrier networking expertise, our platform enables organizations to deploy, optimize, and scale multi-service aggregation infrastructure with carrier-grade reliability and operational flexibility.

THE CHALLENGE

The aggregation layer in service provider networks concentrates traffic from thousands of access nodes, cell sites, and enterprise connections into the metro or region core. Traditionally, this layer is built on heavy, complex and power-hungry chassis-based provider edge (PE) routers -- platforms built based on a proprietary and closed silicon hardware and sold at premium pricing. When an operator needs to add capacity, the options are limited: purchase another proprietary chassis at significant capital expenditure or upgrade to the next chassis model in the same vendor's portfolio. There is no path to incremental, cost-effective scaling.

Proprietary silicon dependency, especially bundled with the same source software, creates the most expensive lock-in in the network. PE routers are long-lifecycle assets that carriers deploy for seven to ten years. During that period, software upgrades, protocol additions, and capacity enhancements are tied to the original vendor's big chassis and pricing. If the vendor discontinues a platform or changes licensing terms, the operator faces a costly forklift replacement. Unlike access-layer devices where individual unit costs are modest, a single SP networking chassis can represent a seven-figure investment -- making vendor lock-in at this layer a strategic risk, not merely an operational inconvenience.

Operational complexity compounds the cost problem. Legacy proprietary PE routers use vendor-specific command-line interfaces, proprietary network management systems, and custom automation frameworks that do not integrate cleanly with modern OSS/BSS toolchains. Operators running multi-vendor networks must maintain separate operational workflows, separate training programmes, and separate spare parts inventories for each vendor's aggregation platform. As metro traffic grows and service portfolios expand, this operational fragmentation increases staffing costs and slows service delivery.

THE SOLUTION

VelOS SP addresses service provider networking with a full IP/MPLS protocol stack purpose-built for backbone, aggregation and business and internet-edge routing. Border Gateway Protocol (BGP), Open Shortest Path First (OSPF), and Intermediate System to Intermediate System (IS-IS) provide the routing foundation, while Multiprotocol Label Switching (MPLS) with Label Distribution Protocol (LDP), Resource Reservation Protocol for Traffic Engineering (RSVP-TE), BGP for Labeled Unicast (BGP-LU), Segment Routing over MPLS (SR-MPLS), and Segment Routing over IPv6 (SRv6) deliver the traffic engineering and label switching capabilities that aggregation networks demand. Operators can deploy MPLS-based services immediately while positioning their network for SRv6 migration on the same platform -- no forklift upgrade required.

Multi-service delivery is a core strength of VelOS SP at the any networking layer. EVPN, L2VPN, L3VPN, and VPLS services run on a single platform, enabling operators to support mobile backhaul aggregation, enterprise business VPN, wholesale connectivity, and residential broadband services from the same PE router. This consolidation reduces the number of platforms to manage and eliminates the need for separate service-specific devices at each aggregation site.

Standard management interfaces -- Network Configuration Protocol (NETCONF), gRPC Network Management Interface (gNMI), and Simple Network Management Protocol (SNMP) -- enable direct integration with existing OSS/BSS toolchains. Operators can provision services, monitor performance, and automate configuration changes using the same management frameworks they already deploy across the rest of the network. Combined with AI-enhanced traffic engineering that predicts congestion across the metro aggregation layer and optimises forwarding paths proactively, VelOS SP delivers an aggregation platform that is operationally modern without sacrificing the protocol depth that service provider networks require.

RECOMMENDED HARDWARE

VelOS SP runs on Evollabs service provider routers built on Broadcom routing silicon. The backbone layer is served by the highest-capacity router in the Evollabs SP portfolio while entry to the entire portfolio starts with pre-aggregation level handled by the 800G class platform.

Role	Model	Ports	Chipset	Why This Hardware
Role Backbone / PE Router	Model EVO-6110-R2L	Ports 4x25G + 48x100G + 24x400G	Chipset Broadcom Jericho2C+	Why This Hardware 14.4T class capacity for backbone and PE routing; 48 ports of 100G and 24 ports of 400G for high-density aggregation and backbone interconnect, big tables for internet routing
Role Backbone / PE Router	Model EVO-4710-R2L	Ports 4x25G + 24x100G + 12x400G	Chipset Broadcom Jericho2C+	Why This Hardware 7.2T class capacity for backbone and PE routing; 24 ports of 100G and 12 ports of 400G for high-density aggregation and backbone interconnect, big tables for internet routing
Role Aggregation / Backbone	Model EVO-4210-R2	Ports 4x25G + 22x100G + 4x400G	Chipset Broadcom Qumran 2C	Why This Hardware 2.4T class capacity for metro aggregation and entry-level backbone routing; 22 ports of 100G for high-density access aggregation with 400G uplinks to core, can be used as business PE as well
Role Aggregation / PE Router	Model EVO-4220-R2L	Ports 64x25G + 10x100G	Chipset Broadcom Qumran 2C	Why This Hardware 2.4T class capacity for metro aggregation and PE routing; 64 ports of 10G/25G for high-density access aggregation with 100G uplinks to core, big tables for internet routing
Role Aggregation / PE Router	Model EVO-2810-R1L	Ports 48x10G + 6x100G	Chipset Broadcom Qumran MX	Why This Hardware 800G class capacity for metro aggregation and PE routing; 48 ports of 10G for medium-density access aggregation with 100G uplinks to core, big tables for internet routing
Role Pre-Aggregation	Model EVO-2820-R2	Ports 24x25G + 2x100G + 2x400G	Chipset Broadcom Qumran 2A	Why This Hardware 800G class feeder device for metro pre-aggregation; 400G uplinks to aggregation tier enable high-bandwidth traffic delivery from access nodes and cell sites
Role Pre-Aggregation	Model Pre-Aggregation EVO-2360-R2	Ports 20x25G + 4x100G	Chipset Broadcom Qumran 2U	Why This Hardware 400G class feeder device for metro pre-aggregation; 100G uplinks to aggregation tier enable medium-bandwidth traffic delivery from access nodes and cell sites

DEPLOYMENT TOPOLOGY

Service Provider Networking with VelOS SP

This service provider topology uses Evollabs routers across access, pre-aggregation, aggregation (PE), and core layers. It supports MPLS/SR-MPLS, EVPN, and dynamic routing protocols for scalable multi-service delivery. Traffic flows from access to core with redundancy and high-speed links. The design enables efficient aggregation, horizontal service distribution, and management connectivity, scaling to hundreds of access nodes per metro network.

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Use Cases

USE CASE SCENARIOS

A regional ISP serving 50,000 residential and enterprise subscribers operates three legacy proprietary chassis PE routers at metro aggregation sites. The routers are approaching end of life, and the vendor has quoted seven-figure replacement costs for the next-generation chassis. The ISP replaces each proprietary chassis with a Evollabs EVO-4220-R2L running VelOS SP, delivering 2.4T class capacity with 64x 10G/25G ports for access aggregation and 100G uplinks to core. VelOS SP's full MPLS and EVPN stack supports the ISP's existing L2VPN and L3VPN services without reconfiguration of the access layer. NETCONF and gNMI integration with the ISP's existing OSS platform eliminates the need for the proprietary NMS that the legacy vendor required.