Kayanan Jegatheeswaran

Networks / Architect Consultant with +10 years of experience in LAN / WAN / Datacenter environments. I support CIOs, integrators, and infrastructure teams from design to deployment and RUN (L2/L3).

My strengths: architecture design, HLD/LLD writing, migration procedures (MOP), testing/validation, standardization, and maintenance in operational condition (MCO/MCS). I specialize in Datacenter Fabric Spine-Leaf architectures with VXLAN/EVPN, as well as SD-WAN projects and LAN/WLAN renewals.

What I can handle:

Audit & target trajectory (LAN/WAN/WLAN/DC), feasibility study

Architecture & documentation: HLD, LLD, DAT/DEX, runbooks, test plans

Datacenter: VXLAN/EVPN design & deployment, DC/WAN integration, redundancy & scalability

WAN / SD-WAN: migrations, failover/rollback, traffic optimization and security

Switching/Routing: VLAN/Trunk, STP, LACP/Port-Channel, BGP/MP-BGP, OSPF, routing policies

RUN L2/L3: diagnostics, incident resolution, continuous improvement, capacity planning

Automation: Ansible / Python to ensure reliability and speed up delivery

Environments & technologies

Cisco (Catalyst 9K, c8xxx routers, Viptela, Meraki), Aruba OS-CX / Aruba 10K / AFC (Aruba Fabric Composer), Fortinet, Pensando, Aruba/Cisco Wi-Fi, UCOPIA.

Sectors & achievements (examples)

Projects in the public sector (university hospitals), banking, transport, education, and multi-site environments: deployments, migrations, architecture renewals, standardization, and operational support (including large-scale scopes).

Certifications: Aruba ACSA / ACSP, CMNA, ACFE (Arista in progress).

Languages: French (native), English (fluent).