Cisco Ise L2 Senior Network Engineer

Job Description – Sr. Network Engineer (L2)

Role: L2 – Senior Network Engineer
Experience Required: 4–8 Years
Employment Type: Permanent
Job Location: Gurugram
Working Days: 5 Days a Week

Job Overview

We are looking for an experienced L2 Senior Network Engineer with strong expertise in network operations, monitoring, troubleshooting, and infrastructure support. The role involves managing day-to-day network operations, monitoring network health, resolving L2 issues, and executing configuration changes under defined SOPs and guidance from L3 teams.

Key Responsibilities

1. Cisco DNAC Support

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  Monitor network health, device compliance, and assurance dashboards.

  
  


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  Assist in provisioning switches and access points using DNAC templates.

  
  


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  Generate and analyze DNAC reports, including inventory, SWIM, topology, and client health.

  
  


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  Perform basic troubleshooting of synchronization failures and telemetry issues.

  
  

2. Cisco ISE (NAC / EAP-TLS / MDM / RADIUS / TACACS+)

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  Monitor authentication logs and troubleshoot 802.1X authentication failures (EAP-TLS, PEAP).

  
  


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  Verify endpoint posture assessments and MDM compliance status.

  
  


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  Troubleshoot user and machine certificate-related issues.

  
  


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  Perform ISE node and PSN health checks.

  
  


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  Handle basic ISE operations, including endpoint addition, profiling checks, and session clearing.

  
  


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  Escalate complex authentication and policy-related issues to L3 teams.

  
  

3. Cisco ThousandEyes

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  Monitor agent health, alerts, and network performance.

  
  


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  Validate synthetic tests and endpoint agent functionality.

  
  


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  Troubleshoot basic connectivity and agent installation issues.

  
  

4. Fortinet – FortiGate, FortiAnalyzer & FortiManager

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  Monitor firewall logs and security alerts through FortiAnalyzer.

  
  


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  Assist with firewall rule reviews and rule lifecycle management.

  
  


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  Execute standard configuration updates through FortiManager under guidance.

  
  


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  Perform basic troubleshooting of VPN connectivity, interface flaps, and routing issues.

  
  

5. IT Asset Management

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  Maintain and update network inventory, including switches, access points, routers, and firewalls.

  
  


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  Track firmware versions, EOL/EOS status, and compliance requirements.

  
  


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  Assist with spare inventory management and RMA coordination.

  
  

6. LAN Switching – Cisco / Brocade / Nexus

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  Troubleshoot access-layer network issues involving VLANs, trunking, and STP.

  
  


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  Perform switch port configuration, MAC address tracing, and interface health checks.

  
  


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  Handle basic Cisco Nexus operations, including vPC checks and interface monitoring.

  
  


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  Perform configuration backups and restoration activities.

  
  

7. Scripting & Automation Support

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  Execute pre-built scripts using Python, Bash, and Ansible for routine automation tasks.

  
  


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  Assist in log collection, report generation, and operational activities using automation tools.

  
  

8. DHCP Support

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  Troubleshoot IP address conflicts and DHCP scope exhaustion.

  
  


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  Validate DHCP leases and address assignment logs.

  
  


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  Check DHCP relay configurations (IP Helper) and related connectivity issues.

  
  

9. NIPS (Network Intrusion Prevention System)

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  Monitor intrusion alerts and security events.

  
  


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  Perform initial analysis of suspicious network activity and escalate findings to relevant teams.

  
  


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  Validate sensor health and connectivity.

  
  

10. Cisco Wireless LAN Controller (WLC)

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  Troubleshoot wireless client connectivity issues, including authentication failures, DHCP, and roaming.

  
  


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  Monitor wireless controller and access point health.

  
  


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  Modify WLAN configurations as per defined SOPs.

  
  


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  Troubleshoot RF parameters, AP join issues, and client load-related problems.

  
  

Required Skills & Qualifications

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  Strong understanding of L2/L3 networking fundamentals, including VLANs, STP, EtherChannel, DHCP, and basic routing.

  
  


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  Hands-on experience in network monitoring, operations, and L2 troubleshooting.

  
  


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  Familiarity with Cisco DNAC, Cisco ISE, Cisco ThousandEyes, and Cisco WLC.

  
  


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  Working knowledge of Fortinet solutions – FortiGate, FortiAnalyzer, and FortiManager.

  
  


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  Understanding of 802.1X authentication mechanisms, including EAP-TLS and PEAP.

  
  


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  Familiarity with troubleshooting tools such as Wireshark, DNAC Assurance, ThousandEyes, and FortiAnalyzer.

  
  


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  Basic scripting knowledge in Python, Bash, or Ansible.

  
  


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  Good documentation, incident management, and change management skills.

  
  

Experience Requirements

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  4–8 years of relevant experience in Network Operations, Network Support, or Infrastructure Support.

  
  


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  Experience in monitoring, troubleshooting, and executing network changes in an enterprise environment.

  
  


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  Ability to handle L2 operational issues independently and coordinate with L3 teams for complex escalations.