Routing Switching Networking - Expert
Cognizant · Chennai, Tamil Nadu, India
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Cognizant · Chennai, Tamil Nadu, India
Network Engineer (Routing, Switching, ACI & Load Balancing) Job Summary We are looking for a skilled Senior Associate – Networking with strong experience in Routing, Switching, Cisco ACI, VXLAN/EVPN, and Load Balancing technologies . The ideal candidate should possess hands-on troubleshooting expertise, operational support experience, and the ability to manage enterprise network infrastructure in a large-scale environment. Key Responsibilities Routing & Network Fundamentals • Hands-on experience with OSPF and BGP routing protocols. • Strong understanding of: • Static and Dynamic Routing • Route Redistribution • Routing Tables, Metrics, and Convergence Behavior • Good knowledge of IPv4/IPv6 addressing, including: • Subnetting • VLSM • CIDR High Availability Technologies • Experience with network redundancy and failover solutions: • HSRP • VRRP Switching • Strong understanding of: • VLANs and 802.1Q Trunking • Spanning Tree Protocols (STP/RSTP/MST) • Layer 2 and Layer 3 Switching • EtherChannel and LACP Cisco ACI, VXLAN & EVPN • Hands-on experience or strong exposure to: • VXLAN Architecture • EVPN Control Plane • Cisco ACI Fabric • Spine-Leaf Architecture • APIC Controller • Knowledge of: • vPC • FabricPath (Good to Have) Load Balancing (F5 BIG-IP / Citrix NetScaler) • Experience with: • Local Traffic Manager (LTM) • Virtual Servers, Pools, and Nodes • SSL Offloading (Good to Have) • Understanding of: • Load Balancing Algorithms (Round Robin, Least Connections, Ratio-Based) • Session Persistence / Stickiness • Health Checks and Monitoring • Layer 4 and Layer 7 Load Balancing • SNAT/NAT Configuration • High Availability and Clustering (Active-Standby) Troubleshooting & Operations • Strong troubleshooting skills involving: • Ping, Traceroute • Routing Table Analysis • Network Incident Management • Exposure to: • Wireshark / tcpdump (Good to Have) • ServiceNow Ticketing Tool (Good to Have) Network Platforms • Hands-on experience with: • Cisco Catalyst Switches • Cisco Nexus Switches • Cisco IOS / NX-OS CLI • Exposure to Juniper Junos is a plus. Required Skills • Routing & Switching • Cisco ACI • VXLAN / EVPN • F5 BIG-IP or Citrix NetScaler • Network Troubleshooting • Cisco Nexus & Catalyst Preferred Skills • Juniper Junos • FabricPath • SSL Offloading • Wireshark / tcpdump • ServiceNow • Microsoft Visio Soft Skills • Excellent verbal and written communication skills. • Strong documentation and network diagramming capabilities. • Ability to work in a collaborative, fast-paced support environment