Cyril Benedict

Cisco Prime Network Registrar is a scalable, high-performance, extensible solution that provides services for Dynamic Host Configuration Protocol (DHCP), Domain Name System (DNS) acting as an Authoritative DNS, and Caching DNS.

Contribution:

• Review with Customer regarding DHCP, ADNS, CDNS and IPAM business goals, objectives and requirements and work with them to provide better solution based on Customer's network architecture, features, and configuration.
• As the SME, I was in the front line of the highly critical design solutions.
• Actively involved in integrating CPNR 11.1 as Dockerized image in Kubernetes environment.
• Experience in tuning Chatty Client filter which allows fencing of misbehaving clients for DHCP.
• Experience in writing new extensions in TCL scripts to change the native DHCP functionalities to manipulate requests and response packets and process them aligned to the custom business requirements.
• Experience in protecting DNS vulnerabilities using DNSSEC, DNS Firewall, TSIG, DNS over TLS, DNS over HTTP.
• Experience with complex network analysis tools such as tcpdump, Wireshark.
• Provide Capacity planning and performance guidelines for CPNR product.
• Working knowledge of virtualized environments like VMware.
• Excellent problem solving and analytical skills
• Experience of troubleshooting using packet captures and system metrics etc.,
• Work with business owners and TAC to establish key performance indicators.
• Involved in the migration of BIND DNS to CPNR DNS for a major Enterprise customer.
• Experience in troubleshooting and analyzing the product logs using logscan tool
• Provide Root Cause Analysis (RCA) for the CAP cases and high priority cases
• Respond to and resolve all customer support issues related to CPNR product
• Experience with common scripting languages like Bash, Python, sed, awk.
• Provide sizing recommendations for ADNS, CDNS and DHCP servers
• Design and develop POC (Proof Of Concept) document for CPNR.
• Provide Configuration Conversion / Method of Procedure (MoP) for Customers to migrate from existing server configuration to new.
• Provide "Deployment strategy document" with expertise gained with other customers having similar profiles like Service Providers, Enterprise etc.,
• Writing scripts or batch files to add huge data to the CPNR database for initial addition of configuration data.
• Consultation and guidance for CPNR product with the latest features available, which meets Customers current/future goals.
• Familiarity with Load balancing, Failover and High availability concepts.
• Provides Network Security Auditing (using Nessus tool) for Cisco Prime Network Registrar to achieve hardened system.
• Provides TAC (Tier 1 engineers) training for Cisco Prime Network Registrar product on periodical basis.
• Interact with major customers like Reliance, Rakuten, Vodafone, Bharti Airtel, Shaw Cablesystems, Rogers, etc. on monthly basis to track product specific issues to closure.
• Fundamental networking knowledge of TCP/IP, ARP, IP Tables, routing and working knowledge of routers, switches, firewalls/VPNs

• Awarded "Best Customer Support Engineer" from Jesper Anderson - VP, Cisco. (Currently he is the CEO for Infoblox)
• Awarded "Standing Ovation" for best engineering support for Priority cases on Reliance and Rakuten.
• As part of my 17 years of career progress, excelled in Cisco account with strong domain and Product knowledge and worked extensively on massive DDI (DNS, DHCP, IPAM) network environment.
• Worked with major Networking protocols like TCP/IP, UDP, TCP, LDAP, RADIUS, SNMP, TFTP and Telecom protocols like SS7, INAP, TCAP, SIP, IMS