Job Description

​​​​​​​Location : Chennai - Ambattur

Shift : Rotational Night Shift

Work Model : Work from office

Looking for Immediate joiners only.

Job Responsibility:

• all Level 1 issues from the customers and driving satisfactory resolution of the issues.
• Product, Codes and Configuration issues
• consistent customer satisfaction
• all communication with customers in the CRM
• with international customers (via Phone Support)
• handoff (escalation) of cases that require technical or political to L2 TAC

Primary Skills:

• OSI layers – detailed understanding of each layer’s function and relevant protocols that operates at each level
• TCP/IP – thorough understanding and clear explanation about windowing/handshake mechanism
• MAC header structure and use of each fields
• IP header structure and use of each fields
• ARP – how ARP works in a Layer 2 and Layer 3 communication
• Mac address table fields and how a switch uses MAC table for switching decisions
• ARP table and how a switch uses ARP table
• Routing Table fields and how a Router uses routing table for routing decisions
• DHCP protocol messages (clear understanding of DORA process)
• DHCP operation in layer 2 and layer 3 scenarios (server & client in same vlan or different VLAN)
• thorough understanding of Broadcast domain and Collision Domain
• thorough understanding of Unicast, Multicast and Broadcast traffic
• thorough understanding of Subnetting, Vlan, VTP, 802.1q, STP, Linkage
• thorough understanding of RIP (version 1 and 2) and OSPF (link states, LSA types, area types, router types, neighbor communication)
• Difference between Routing and Routed protocols
• Good troubleshooting approach (from Level 1 to 7 of OSI)
• How ARP learns the mac address in same subnet and different subnet
• Difference between hub,layer2 switch and layer 3 switch and router
• DHCP DORA process sender IP,mac and port number and destination IP,mac and port number
• OSI: how to troubleshoot in network with help of OSI model.
• Data link header
• Ip header
• TCP header