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Network System Administrator Resume

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Irvine, CA

PROFESSIONAL SUMMARY:

  • Passionate, focused, and diligent Engineer with 8+ years of cumulative experience in Networking and Security
  • Experienced in design, installation, configuration, administration and troubleshooting of LAN/WAN infrastructure and security using Cisco routers/Switches/firewalls
  • Expert level knowledge about TCP/IP and OSI models
  • Experience in designing, deploying and troubleshooting LAN, WAN, Frame - Relay, and Ether-channel.
  • Enterprise level routing experience using protocols RIP v1 & 2, EIGRP, OSPF and BGP
  • Configure and setup Cisco routers, switches, VPN concentrators, and security appliances for access to vital business applications
  • Assist in the design of multi-server environments including IP address schemes, DNS, DHCP, WINS, and EtherChannel (Bonding)
  • Configured security policies including NAT, PAT, VPN, Route-maps and Access Control Lists
  • Configuring, administering and troubleshooting Checkpoint and ASA firewall
  • Enterprise switching with VLANs, Trunks, Spanning Tree, and Port Spanning
  • Expertise in maintenance of layer 2 switching tasks which advocate VTP, STP, RSTP, PVST, RPVST, and configuring EtherChannel with LACP and PAGP along with troubleshooting of inter-VLAN routing
  • Extensive exposure and experience working with Cisco (routers and switches), Juniper (routers and switches), Nexus (switches), and Netgear (routers and switches)
  • Design, configure, and support Cisco, Nexus Platforms (Nexus7K, 5K, 2K)
  • Experience in physical cabling, IP addressing, configuring and supporting TCP/IP
  • Worked extensively on Cisco Firewall & ASA 5500(5510/5540) Series
  • Thorough understanding of VPN technologies like IPsec, GRE tunneling, MPLS for remote access security
  • Experience working on network monitoring and analyzing tools like, SOLAR WINDS, and Wireshark
  • Efficient in using Microsoft VISIO/Office, and Google (Docs, Sheets, and Slides) for technical documentation and presentation
  • Proficiency in virtualizing environment using VMwear, Virtual Box and AWS
  • In-depth knowledge and proficiency in working with operating systems (Linux, Windows, Apple iOS and MSDos), hardware maintenance, network and system administration
  • Planning, installing and configuring any network that addresses client’s requirements, maintaining 99.99% server uptime to build a strong and lasting relationship with the client
  • Providing an efficient solution to network and system related issues by reverse engineering, analytical thinking, and troubleshooting the root cause

TECHNICAL SKILLS:

Switches:  Cisco (2900, 3560, 3750, 4500, 6500) series switches, Nexus 7K, 5K, 2K switches, Netgear Switches and POE switches

Routers:  Cisco 7609, 7200, 4000, 3800, 3745, 3700, 3640, 3600, 3200, 2900, 2800, 2600, 2500, 1800, 1700, 2600, 810, RV 325, RV 320, and Netgear Pro Safe Firewall Routers

Cisco UC Product Suite:  Versions 7.x, 8.x, 9.x, 10.x (CUCM, IM&P, CUPC, CUC, UCCX, CME versions 7.x, 8.x, 9.x, 10 and CUE)

Network Management:  Network Troubleshooting, Hardware Troubleshooting, Network planning and Design, Network Administration of SSH, Telnet, SNMP, SDM, ICMP, Cisco Works

Networking Protocols:  RIPv1 & RIPv2, IGRP, EIGRP, OSPF, BGP, TCP/IP, IP Sec, UDP, VRRP, HSRP, ATM, MPLS, HTTP, FTP, STP, RSTP and PIM

Virtualization:  VMwear, Virtual Box, and AWS

LAN Technologies:  VLAN, Private VLAN, Spanning Tree, VTP, 802.1Q Trunking, Fast Ethernet, Gigabyte Ethernet, IGMP & IGMP Snooping

WAN Technologies:  PPP, Frame relay, ISDN, ATM, MPLS, T1/T3 & E1/E3

Network Security:  Palo Alto, Cisco ASA5550/ 5540,NetScreen, Sonic Wall, Juniper SRX, Checkpoints, AAA, Firemon, Filesystems, Cloud computing, Red Hat Storage, FREE RADIUS, CADA, LDAP, IPsec VPN, SSL SAN,VPN, IDS, IPS, Source Fire, Fire Eye, Cisco NAC (4.9.3), Cisco ISE, Aruba, RSA, RSA 2 Factor, SIEM, Qradar, Tripwire ACL, IPsec, VPN, Port-security, AAA, Zone-Based Firewalls, IOS based Build a Lab for the team using various Aruba controllers, Switches, Microsoft, Python, Airwave, CPPM Router security DFA, firewalls, IDS/IPS

Servers:  Windows server 2008/R2, 2012/R2, and JAMF Pro (Casper Suite)

Operating Systems:  Windows NT, XP, 2000, 2003, Vista and Windows 7, 8, 10, Linux (RHEL, Ubuntu)

Network Monitoring Tools:  Syslog, and SNMP

Packet Sniffing Tools:  Wireshark, and SOLARWINDS

PROFESSIONAL EXPERIENCE: 

Confidential, Irvine, CA

Network System Administrator

Responsibilities:

  • Established a networking environment (LAN, and WAN) by designing system configuration, directing system installation, defining, documenting and enforcing system standards
  • Designed and implemented new solutions and improved resilience of the existing environment
  • Maximized network performance by monitoring the traffic using PRTG and SNMP
  • Implemented reverse engineering to troubleshoot network problems and outages
  • Worked on Cisco IOS, Cisco IOS-XR, Cisco Cat OS, Cisco NX-OS, JUNOS 
  • Experience in configuring BGP for the data center as a WAN protocol and manipulating BGP attributes 
  • Experience in moving data center from one location to another location from Cisco 6500 based data center to Cisco 6500 & Nexus based data center
  • Scheduled upgrades (Routers, PCs, and Firewalls) and collaborated with network architects on network optimization
  • Undertaking data network fault investigations in LAN and WAN environments by collaborating information from multiple sources
  • Secured networking systems by establishing and enforcing Group Policy Objects (GPOs) for defining and monitoring access
  • Configured different layers of firewalls using Cisco ASA in line with IT security policies
  • Reported network operational status (using Microsoft VISIO/Office) by gathering and prioritizing information and managing projects
  • Upgrading data network equipment to the latest stable firmware releases
  • Experience in configuring VPC, VDC and OTV between the data centers as a layer 2 extension
  • Handled Checkpoint firewall management and operations across our global networks
  • Designed and deployed MPLS QOS, and MPLS Multicasting as per company standards
  • Implemented site to site VPN in Juniper SRX as per requirements of the customer
  • Deployed various EX, SRX & J series Juniper devices
  • Configured VPN, GRE, IPsec access to support off-site employees, encrypted SSH sessions for router logins
  • Provided remote support to off-site engineers and end users/customers using VNC viewer, Team viewer, and Screen sharing during installations, remote troubleshooting and fault finding if issues occur upon initial installation
  • Created VLANs to effectively manage existing infrastructure, used subnetting schemes and DHCP to assign IP addresses
  • Updated network infrastructure and resources by liaising with project management teams, third-line engineers and service desk engineers on a regular basis
  • Configured HSRP / VRRP on routers to increase redundancy and VLAN trunking 802.1Q on Cisco catalyst switches
  • Updated my networking knowledge by participating in technical seminars, and reading professional publications

Environment: Cisco 2948/2960/3560/3500/3550/3750/4500/6500 switches and Cisco 2800/2900/3600/3640/3845/7200 routers, Cisco Nexus 5K/7K, Cisco ASA 5000/5500, Palo Alto, Checkpoint, NetScaler, F5 BIGIP LTM RIP, OSPF, BGP, EIGRP, LAN, WAN, VPN, HSRP, and VRRP

Confidential, Phoenix, AZ

Network Administrator

Responsibilities:

  • Configured HSRP and VRRP on routers, EtherChannels and Port Channels on 6500 catalyst switches
  • Configured routing protocols such as RIP V 1&2, OSPF, EIGRP, MPLS, static routing and policy based routing
  • Configured and troubleshot link state routing protocols like OSPF in single and multiple areas
  • Performed data center migration in Access, Distribution and Core layers
  • Configured VLANs with 802.1Q tagging. Configured Trunk groups, EtherChannels, and Spanning tree for creating Access/Distribution and Core layer switching architecture
  • Configured Standard, Extended, and Named Access Lists to allow users to access different applications
  • Provided technical support and solutions for network problems, and NAT solutions on WAN applications
  • Configured BPDU Guard, port-fast, uplink fast and other spanning tree features on switches
  • Performed troubleshooting of connectivity problems using PING, and Traceroute
  • Upgraded Cisco ASA 5510 firewalls using 6500/7600 catalyst modules for enhanced performance, security and reliability
  • Resolved network outages by troubleshooting the root cause
  • Migrated IPv4 addresses to IPv6 addresses using mechanisms like Tunnel Broker, Transport Relay Translation (TRT), NAT64, DS-Lite and DNS64
  • Provided on-call support for installation and troubleshooting configuration issues
  • Planned and implemented subnetting, VLSM to conserve IP addresses
  • Configured STP for loop prevention and VTP for Inter-VLAN Routing
  • Provided technical support for improvement, upgradation, and expansion of the existing network architecture
  • Troubleshot TCP/IP problems and connectivity issues in multi-protocol Ethernet environment
  • Performed IOS upgrade on 2900, 3500 series Cisco Catalyst switches and 2500, 2600, 3600 series Cisco routers using TFTP
  • Installed and configured DHCP server, and resolved IP conflicts
  • Displayed customer centric approach and skills for troubleshooting issues

Environment: Cisco 2900, 3500, 6500/7600 catalyst Switches and Cisco 2500, 2600, 3600 routers, Cisco ASA 5510 firewalls, Microsoft Lync, Cisco Unified Video Conferencing, Unix commands, IPV6, Cisco IP phones, ACL, STP, VTP, HSRP, Subnetting, VLSM, NAT, RIP, OSPF, EIGRP, BGP, MPLS, TRT Cisco IOS CLI

Confidential,  Washington, DC

Systems Administrator

Responsibilities:

  • Day-to-day work involves scheduling firewall policy provisioning, and working with users to identify connectivity related issues, troubleshoot them using both Smart Utilities and CLI
  • Managed and administered Juniper SRX and Checkpoint Firewalls at various zones including DMZ, Extranet (Various Business Partners) and ASZ
  • Managed Juniper Firewall Policy using NSM and Screen OS CLI
  • Performed troubleshooting on firewall connectivity related issues using Smart view tracker on Checkpoint and NSM Log viewer
  • Configured and administered Cisco ASA Firewalls (5585, 5550, and 5540) and used Cisco CSM, ASDM for day-to-day administration
  • Active/Standby and Active/Active HA configuration on Cisco ASA Firewalls
  • Configured High Availability (HA) using Cluster XL on Checkpoint as well as VRRP, and monitored the Sync status for Stateful replication of traffic between active and standby member
  • Configured rules and maintained Palo Alto firewalls and analyzed firewall logs using various tools.
  • Experience on ASA firewall upgrades to 9.x
  • Configured Panorama web-based management for multiple firewalls
  • Studied the flow of traffic through the Check Point Security gateway cluster and performed troubleshooting for connectivity issues using advanced troubleshooting from Command Line Utilities.
  • Used tools such as SKYBOX for Firewall Policy Optimization and rule based Clean up
  • Built and configured Active/Standby Failover on Cisco ASA with stateful replication
  • Configured and tweaked the inspection policies on firewall to allow legacy application traffic
  • Studied and applied different types of NAT on Cisco ASA firewalls and apply them
  • Provisioned firewall policies on Fortinet FortiGate appliances using FortiManager
  • Supported Blue Coat Proxy in explicit mode for users trying to access internet from Corp Network
  • Performed troubleshooting on connectivity issues through Blue coat by writing and editing web policies
  • Administered Big IP F5 LTM for local load balancing and used GTM for load balancing across Data Centers
  • FWSM configurations in single/multiple context with routed and transparent modes
  • Supported Data Center Migration Project involving physical re-locations
  • 24 x7 on call support

Environment: Cisco 3750/3550/3500/2960 switches and Cisco 7200/6500/3600/3000/2900/2600 routers, Checkpoint, OSPF, BGP, VLAN, HSRP, LAN, WAN, IPV4, ASA Firewall, Checkpoint, Nexus 7K/5K/2K, F5 BIGIP LTM

Confidential

Network Administrator

Responsibilities:

  • Installed new routers and switches to adapt to the existing environment
  • Designed, installed and configured network for new branch office
  • Configured and maintained LAN, WAN, QoS, VPNs and Ether-Channels
  • Designed, configured, and maintained GRE tunnels, SSL, Site-Site VPN, IPSEC VPN, Server to Client VPN, and DMVPN
  • Created and maintained user accounts and groups
  • Updated system hardware and software to ensure smooth functioning of networking devices
  • Recovered passwords and system data
  • Handled all critical network resource including Cisco 1900, 2950, 2960 switches & Cisco 2500, 2600, 1841 routers, Cisco RV32X series small business routers, Netgear routers and switches
  • Configured BPDU Guard, port-fast, uplink fast and other spanning tree features for switches
  • Configured MPLS Layer 3 VPN cloud in data center and worked with BGP WAN towards customer interface
  • Configured firewalls and access control lists (ACLs) to ensure multilayer security for both clients and internal departments in the organization
  • Configured group policies objects (GPOs) in Active Directory for effective utilization of network resources
  • Periodically conducted health checks on routers, switches and end devices. Resolved issues using JIRA
  • Configured new PCs, laptops, scanners, and printers to integrate with existing infrastructure
  • Documented the status of tickets (raised, pending, and solved) on daily, weekly, and monthly basis using Google (Docs, Sheets, and Slides)

Environment: Cisco routers (2600, and 3900), Cisco switches (2960, and 3560), LAN, WAN, Subnetting, VLAN, VTP, VPN, NAT, OSPF, BGP, EIGRP

Confidential

Network Associate

Responsibilities:

  • Received inbound calls of technical nature, independently resolved customer complaints, concerns and inquiries regarding their Internet connection
  • Set up Home Networks, provided troubleshooting and full support on virgin-media security software (PC-guard)
  • Troubleshoot a wide range of technical support issues and connectivity problems such as authentication, connection speed, e-mail configuration, and loss of synchronization
  • IOS upgrades on catalyst series switches like 2900, 3560, 3750
  • Troubleshoot TCP/IP problems and connectivity issues in multi-protocol Ethernet environment
  • Implemented trunking protocols like 802.1Q on 3750 switches
  • Configured ACLs to provide accessibility to network resources and restrict unauthorized users
  • Maintained STP, RSTP and PVST+ for the catalyst switches
  • Configured and maintained RIP, OSPF and routing protocols on 2600 and 3600 series Cisco router
  • Maintained and troubleshot connectivity problems using Ping, and Traceroute
  • Assisted in racking and stacking
  • Technical assistance for LAN/WAN management for office and end users
  • Documented network issues and solutions to report higher authorities and maintain a database for further reference

Environment: LAN/WAN, Cisco Routers (2600, and 3600) and Switches (2900, 3560, and 3750), TCP/ IP, RIP, OSPF, EIGRP, RSTP and PVST+

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