TCS In-person Interview || Chennai || 5-Sep-2026 (Saturday) || Tata Consultancy Services (TCS) is hiring for Network Admin through a Walk-in Drive on 5th Sep.Must-Have:Hands-on experience with Network Admin ( Cisco . Arista ) OR Network Admin ( Meraki SDWAN ) /Cisco Routing & Switching, Catalyst, Nexus, and Meraki platforms.Strong expertise in Arista Switches, Spine-Leaf architecture, and datacenter networking.Experience with Cisco Meraki SD-WAN (MX, MS, MR), Auto VPN, WAN Failover, and SD-WAN troubleshooting.Solid knowledge of routing protocols such as BGP, OSPF, EIGRP, VRRP, HSRP, VLANs, STP, VTP, and DMVPN.Experience with Cisco DNA Center (DNAC), Cisco ISE, and network automation initiatives.Expertise in LAN/WAN/Wireless network administration, monitoring, and performance tuning.Experience with firewall technologies such as Palo Alto, Cisco ASA, or Firepower