vignesh rajavel

 Network Infrastructure Management:
• Led global network migration and implementation projects, ensuring seamless
integration and operational stability across enterprise-grade environments.
• Designed and deployed high-performance routing and switching architectures using
platforms such as Cisco (Catalyst, Nexus, ISR, ASR), HP Aruba, and Arista.
• Configured and optimized Layer 3 protocols including OSPF, BGP, and EIGRP for dynamic
routing across multi-site networks.
• Implemented redundancy and failover mechanisms using HSRP, VRRP, and MPLS,
ensuring high availability and minimal downtime.
• Conducted network performance tuning, including QoS policies, traffic shaping, and
load balancing to support latency-sensitive applications.
• Integrated network security controls such as ACLs, port security, and 802.1X
authentication, aligned with enterprise compliance standards.
• Utilized monitoring and management tools like SolarWinds, Cisco Prime, and NetFlow for
proactive network health analysis and troubleshooting.
• Experienced in integrating MVNO networks with MNO core infrastructure
using MPLS, BGP, OSPF, and IPsec VPNs. Led service rollouts, routing
configurations, and firewall policy setups to ensure secure and efficient
MNO-MVNO interconnects.

 Hands-on CLI Configuration:
• Configured and deployed enterprise-grade routers and switches using Command Line
Interface (CLI) across platforms including Cisco (Catalyst, ISR, ASR series), HP Aruba,
and Arista.
• Proficient in Layer 2 and Layer 3 network services, including:
1. VLANs, Spanning Tree Protocol (STP), EtherChannel
2. Routing protocols: OSPF, BGP, EIGRP
3. High availability protocols: HSRP, VRRP
• Implemented Quality of Service (QoS) policies for traffic prioritization and load balancing
for optimized performance.
• Conducted troubleshooting and diagnostics using CLI tools and commands to ensure
network stability and uptime.
• Ensured secure configurations and compliance with enterprise standards across core and
edge network environments.

 Network Administration & Troubleshooting:
• Administered and maintained enterprise LAN/WAN infrastructure, ensuring optimal
performance, uptime, and security across multi-site environments.
• Performed proactive monitoring, incident response, and root cause analysis using
tools like Cisco Prime, and Wireshark.
• Diagnosed and resolved complex network issues related to routing, switching, VLANs,
ACLs, NAT, and QoS.
• Conducted packet-level analysis and protocol debugging (e.g., BGP, OSPF, EIGRP) to
ensure efficient data flow and minimal latency.
• Implemented change management and incident resolution processes using ServiceNow
and Remedy ticketing systems.
• Collaborated with cross-functional teams to support network upgrades, migrations, and
disaster recovery testing.

 Network Design & Implementation:
• Designed and implemented scalable and secure network architectures for enterprise
environments, aligning with business and technical requirements.
• Engineered LAN/WAN topologies, integrating Cisco, HP Aruba, and Arista devices to
support high availability and performance.
• Developed and deployed Layer 2/3 network solutions, including VLAN segmentation,
inter-VLAN routing, OSPF, BGP, and VRF configurations.
• Created detailed network diagrams, IP addressing plans, and configuration templates
to standardize deployments and ensure consistency.
• Collaborated with cross-functional teams to integrate security policies, redundancy
protocols (HSRP/VRRP), and QoS strategies into network designs.
• Conducted pre-deployment testing, post-implementation validation, and
documentation to ensure successful project delivery.

 Network Monitoring & Maintenance:
• Proactively monitored and maintained bank network infrastructure, ensuring seamless
operations, high availability, and regulatory compliance across mission-critical
environments.
• Specialized in resolving network performance issues through real-time fault detection,
latency diagnostics, and bandwidth optimization.
• Performed log analysis, Syslog correlation, and NetFlow interpretation to identify
anomalies and maintain optimal throughput.
• Executed preventive maintenance, enforced SLA compliance, and collaborated with
cross-functional teams for incident resolution and change control.

 Network Configuration & Implementation:
• Installed, configured, and optimized routers, switches, and MPLS-based WAN
technologies to support bank network infrastructure.
• Executed IP address planning, VLAN segmentation, and deployment of routing
protocols including BGP, OSPF, and Static Routes.
• Ensured secure and scalable configurations aligned with banking compliance standards,
enabling high availability, redundancy, and efficient traffic routing across branch and
data center environments.