Designation: Engineer Networking

Role: L1 Engineer

Location: Chennai (Ambit IT Park)

Shifts: Flexible to work in Night Shifts

Job Responsibility

- Troubleshoot/Diagnose all Level 1 issues from the customers and driving satisfactory resolution of the issues.
- Troubleshoot Product, Codes and Configuration issues
- Ensure consistent customer satisfaction
- Document all communication with customers in the CRM
- Interface with international customers (via Phone Support)
- Timely 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 (explicit 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)

Look into Wireshark capture

1:ARP learning process and it's flavour

2:How switch learns the mac address

3: DHCP server and Client communication in same network and different network

4:OSI headers

Protocol and port number working

OSI layer model and its learning of encapsulation and decapsulation

5: IP Addressing and Subnetting

6: Difference between layer two and three switch

7: DHCP, Switching and Routing with OSI headers

STP

Vlan

Trunk and Access port

📌 Network Engineer (Chennai)
🏢 Pmr Softtech
📍 Chennai