Natarajan Chandrasekaran
Chennai
Summary
Having 14 Years of Experience in 1) ZTNA (Clientless ZTNA & Hybrid ZTNA) & RAVPN Firewall feature testing [Cisco FTD Firewall]. 2) LTE-EPC Core Testing [MME, PGW, SGW, PCRF]. 3) VOLTE(IMS), CSFB, Data PSHO, Roaming, CDR Analysis], OpenStack [Deploying LTE nodes]. 4) Datacom Testing(L2/L3). 5) Cisco Trustsec Protocol SXP (SGT Exchange Protocol). 6) Optical Protocols Testing in SONET/SDH. Have Good Experience in F5 Networks LoadBalancer. CCNA [Routing & Switching] Certified. Have Good Experience in automation using 1) Python & Rest API on Cisco FMC. 2) python & Selenium web driver (ISEPY Framework) on CISCO Identity Service Engine. 3) TCL (ICONA Framework) on CISCO Catalyst Switches (Cat2K, Cat3K, Cat4K, Cat9k) Have Good experience in testing of below features in Tellabs 7100 product IEEE802.1ag (Connectivity Fault management). ITU-TG.8031(Ethernet Linear switching). ITU-T G.8032(Ethernet Ring protection switching). L2QOS(Policing, Metering, Classification, Scheduling). Have Good experience in Optical domain SDH testing in ALU 1850 product ITU-T G.841(SNCP, MSP). ITU-T G.709(Performance Monitoring). Have Good experience in Security protocols on Radius (AAA) Cisco ISE SXP (SGT exchange protocol), Dot1x Have Good Experience in below Features of LTE 4G on CDOT(BSNL) Product DATA, SMS, VOLTE, CSFB, PCRF, DATA PSHO. LTE EPC Core testing. [MME, PGW, SGW, PCRF] Spirent Landslide Traffic Generator [UE, Enb simulator]. Deployment of LTE EPC Nodes [MME, PGW, SGW] in OpenStack & orchestrator. SMS over IMS feature testing between the UE, EPC, IMS. CDR analysis for Data, VoLTE & SMS scenario. Have Good Experience in Below Features of CISCO FTD (firepower) Products Clientless ZTNA Hybrid ZTNA (Zero Trust Network Access) On Prem FTD with cloud Components (SCC, CDO, SA) Good Experience in Protocol Testing Tools like IXIA, N2X, SPIRENT, ONT, ANT. Good Experience in 4G Testing Tools like Spirent Landslide. Good Knowledge on BGP, MPLS, PIM, IGMP. Well acquainted with the Software Testing Life Cycle. Good Experience in Preparation and Execution of test Cases. Experience in Functional, Integration & System level Testing.
Overview
14
14
years of professional experience
Work History
Software Engineer 3
Cisco
01.2023 - Current
- Testing Zero Trust Network Access (HZTNA/Clientless ZTNA)
- Rest API based Automation for Ravpn/ZTNA feature
- Validate HZTNA feature which involves cloud components (Security Cloud Control, Security Access, CDO) & on prem FTD[4115,1150,1140 model]
Specialist
Tata Elxsi
11.2019 - 01.2023
- BSNL B42G[TCS]
- Testing EPC components with UE and EnodeB Simulated From Spirent Landslide & End to End Traffic are verified using Wireshark. Logs are captured in EPC Core Nodes (PGW, MME, SGW) [User plane & Control Plane]
- SMS/DATA/VOICE Call Scenario validation CSFB (circuit switch fallback) validation Traffic Handover between 4G and 3G Components
- Validating the Data Packet switch Handover feature
- CDR analysis for Data, VoLTE & SMS scenario
- Deploying EPC nodes using OpenStack, TEOSM
Lead Engineer
HCL Technologies
06.2015 - 11.2019
- CAT2K, CAT3K, CAT4K, CAT9K Product Automation
- Automating Testcases for L2 Features, DHCP, Security Features (SXP, SGT) using TCL Framework (ICONA)
- Doing Automation for Customer Found defects [Severity1] & ISE Features (SXP).Automation Using Python & selenium web driver tools
- Responsible for Maintaining ISE SSP Topology Setup end to end with F5 networks Load Balancer connected in between
- Creating end to end Manual flow (wired and wireless-Dot1x and MAB) Maintain the end-to-end topology [virtual machines and physical switches connected]
Engineer-Testing / Senior Engineer-Testing
Aricent Technologies Ltd
08.2012 - 05.2015
- Tellabs 7100 Core Switch
- Responsible for Test Planning, Execution
- Understanding the requirement based on SRS (system requirement specifications), CLI (command Line Interface)
- Designing test cases which map to test requirements for IEEE 802.1ag, QOS & Provider bridging features For Release 8.0 & 9.0
- Test case Execution including regression and ad hoc testing. Defect tracking to closure. Co-ordinating with different team members like development Team.
Technical Associate
Tech Mahindra Ltd
11.2010 - 08.2012
- Company Overview: ALU-1850-TSS320
- Involved in Functionality, Escalation, Sanity,Performance, Scaling, System Stability with various scenarios.
- Develop new topologies for every build and test in different scenarios. Coordinate with Dev Teams to debug the reported defects/Bugs.Validate equipment behavior with standards and requirement documents
- Tested Optical Features like SNCP, MSP, PM in SONET/SDH
and Datacom Features like Provider Bridge, VLAN, STP
- Automation Test Execution (optical features) using AT manager tool
- Used Traffic generator like ONT (Optical Network Tester), ANT (Advance Network Tester) & Spirent Test Center
Education
BE - EEE
Ganadipathy Tulsi’s Engg., College.
01.2009
Skills
- Agile
- Troubleshooting and resolution
- Design and development
Professional Synopsis
14, ZTNA (Clientless ZTNA & Hybrid ZTNA) & RAVPN Firewall feature testing [Cisco FTD Firewall], LTE-EPC Core Testing [MME, PGW, SGW, PCRF], VOLTE(IMS), CSFB, Data PSHO, Roaming, CDR Analysis, OpenStack [Deploying LTE nodes], Datacom Testing(L2/L3), Cisco Trustsec Protocol SXP (SGT Exchange Protocol), Optical Protocols Testing in SONET/SDH, F5 Networks LoadBalancer, Automation using Python & Rest API on Cisco FMC, Python & Selenium web driver (ISEPY Framework) on CISCO Identity Service Engine, TCL (ICONA Framework) on CISCO Catalyst Switches (Cat2K, Cat3K, Cat4K, Cat9k), Testing features in Tellabs 7100 product, Optical domain SDH testing in ALU 1850 product, Security protocols on Radius (AAA) Cisco ISE, Features of LTE 4G on CDOT(BSNL) Product, Protocol Testing Tools like IXIA, N2X, SPIRENT, ONT, ANT, 4G Testing Tools like Spirent Landslide, Knowledge on BGP, MPLS, PIM, IGMP, Software Testing Life Cycle, Preparation and Execution of test Cases, Functional, Integration & System level Testing
Timeline
Software Engineer 3
Cisco
01.2023 - Current
Specialist
Tata Elxsi
11.2019 - 01.2023
Lead Engineer
HCL Technologies
06.2015 - 11.2019
Engineer-Testing / Senior Engineer-Testing
Aricent Technologies Ltd
08.2012 - 05.2015
Technical Associate
Tech Mahindra Ltd
11.2010 - 08.2012
BE - EEE
Ganadipathy Tulsi’s Engg., College.
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