SUMMARY

• Accomplished Network Engineer with over 8 years of experience in design, installation, configuration, administration and troubleshooting of LAN/WAN infrastructure and security using Cisco routers/Switches/firewalls.
• Extensive work experiences on Cisco Catalyst Switches, Routers, Data center Nexus devices, F5 Load Balancers & Cisco ASA firewalls.
• Experience in skillful deployment of Layer - 2 technologies like VLANS, VTP, STP, RSTP, Inter-VLAN routing, VLAN Trunking, Ether Channels, VLAN access-maps and port security, CEF and DCEF technologies.
• Experience with working on latest Cisco Datacenter switches like Nexus 2000, 5000, 6000 and 7000 series switches while implementing advanced features like VDC, VPC and OTV.
• Profound knowledge in deploying routing protocols like OSPF, BGP, EIGRP, RIP, policy based routing on Cisco routers like 2600, 2900, 3600, 3945, 7200 and 7600 series, ASR 1000s and ISR configuring and troubleshooting route redistribution among routing processes.
• Worked extensively on Cisco switches in Access, Distribution, and Core layers including but not limited to Cisco Catalyst 2900, 3560, 3750, 3850, 4500s, 6500s in Enterprise environment.
• Worked on IOS upgrades, NX-OS upgrades along with hitless NX-OS upgrades in Nexus 7ks, 5ks.
• Working expertise in troubleshooting, optimizing and documenting LAN/WAN technologies and T1/T3 WAN technologies.
• Expertise in configuring of SSH, TFTP, FTP, DNS, DHCP and Syslog.
• Intermediate level understanding of Juniper JUNOS, M series router, SRX.
• Knowledge gained by working on Cisco firewall technologies like ASA 5580, AAA with Cisco ACS.
• Efficient in configuring and implementing load balancers like F5 BIG-IP LTM, GTM series like 6900 and Cisco CSM.
• Experience in implementing network security using NAT, PAT, ACL, IDS, IPS and ASA firewalls.
• Hands-on experience in deploying frame-relay, GRE tunnels, Remote Access VPN and Site-to-Site VPN.
• Managed inventory of all network hardware, Management and monitoring by use of SSH, Syslog, SNMP, NTP.
• Worked with monitoring tools such as Infoblox, Solarwinds, NNM, Cisco Prime, troubleshooting tools like Wireshark, Angry IP Scanner, ticketing tools like Clarify, Freedon vision, BMC Remedy.
• Documented all the networks worked on, using Visio, Excel, Word and PPTs.

TECHNICAL SKILLS

LAN Technology: Ethernet, Frame relay, Gigabit Ethernet

Switches: Cisco catalyst 2900,2960,3560,3750,4500,4900,6500 Nexus 2K/5K/6K and 7K series

Switching: ARP, GARP, 802.1q, ISL, VLAN, VTP, STP (802.1d), RSTP (802.1w), PVST, RPVST and Ether-channels - PAGP, LACP

Routers: Cisco 2600, 2900, 3600, 3900, 7200 and 7600 series, ISR and ASR routers

Routing Protocols: OSPF, BGP, EIGRP, RIPV1/V2, PBR, Route Filtering, Redistribution, Summarization, and Static Routing.

WAN Technology: MPLS, Frame relay, HDLC, PPP and E1,T1,E3& T3

Gateway Redundancy: HSRP, VRRP & GLBP

Firewall Technology: Cisco ASA 5580 series, Juniper SRX3600, Checkpoint, Fortigate

WAN Optimizer: Riverbed Steelhead Appliance

Network monitoring and management tools: Wireshark, SNMP Infoblox, Splunk and Solar winds

AAA architecture: TACACS+, Radius, Cisco ACS

Load Balancer Technology: F5 BIG-IP LTM, GTM

Other Protocols: DNS, DHCP, SNMP, NAT

PROFESSIONAL EXPERIENCE

Confidential, Allentown, PA

Network Engineer

Responsibilities:

• Provided high-level technical support for data and voice network systems using industry-accepted best practices.
• Migrated Datacenter environment from Legacy Catalyst switches to new Nexus devices 7010 - SUP 2, 5548 and 2232 switches. And also implemented VPC, VDC and FEXs in that network.
• Installed, configured, maintained and troubleshooted Catalyst devices - Core, Distribution 6500s - SUP 720/2T, 4500s - SUP 6E, Access 3560s, 3750s, 3850s in Enterprise.
• Installed new and upgraded Cisco routers 2811, 2921, 3460, 3925, 7200 and ASR1002.
• Configured and maintained Cisco switches 2950, 3750, 6509 including the Foundry Fastiron Edge 4802-POE
• Configured and troubleshoot VLANs, STP, VTP, Trunking, DNS, DHCP EtherChannels, EIGRP, OSPF, BGP, NAT, MPLS and static routing.
• Configured HSRP, VRRP, GLBP for High Availability requirements in the network.
• Perform system maintenance to proactively tune various network issues prior to occurrence.
• Create, open, resolve and close escalated trouble tickets using clarify and freedom vision ticketing system.
• Investigate, analyze and document technical issues, then provide recommendation to upper management.
• Provide 24/7 support and troubleshooting of a variety of network related issues including Guests’ connectivity and devices operability.
• Configure, monitor and insure connectivity of LAN, and WAN sites.
• Daily phone and email troubleshooting of server-based connection issues.
• Worked on Cisco 2112, 5508 wireless controllers and configured access-points at various locations of the company.
• Worked on Aruba Wireless LAN Implementation for 11n Infrastructure Across the Corporate Network.
• Worked on Riverbed steelhead Appliance for WAN Optimization.
• Worked on commissioning WAN links and troubleshooting WAN outages.
• Extensive work with security tasks such as defining and managing ACLs, hands-on working with advanced network technologies such as virtual private networks, tunneling, remote access and management, demilitarized zones, etc.
• Configured, maintained and troubleshot site-to-site VPN between Data Center and customers sites using Fortigate firewall with Fortinet and CLI.
• Performed Layer I, II and III troubleshooting, while maintaining trouble ticket tracking, following internal/external escalation procedures and customer notifications.
• Troubleshooting of LAN, WAN, WLAN & VoIP networking issues using Wireshark, TCPdump, Netflow, Syslog and other advanced tools and methodologies.
• Maintained detailed network documentation and provided technical support as well as on call and after hours support as required.

Confidential, Brooklyn, NY

Network Engineer

Responsibilities:

• Performing standard network operations via ITIL standard with Incident Management and Change Management.
• Performed Enterprise refresh on Switch block that involved replacing legacy catalyst 6509 with SUP720, Catalyst 4507 with SUP-6 switches migration to Nexus7k with SUP-2E.
• Deployed Nexus 2248 Fabric Extenders, 5548 series Fabric Interconnect and 7010, 7018 series core switches with features like VPC, VDC, and OTV for high availability and redundant server farm environment.
• Worked on OTV to extend L2 VLANs between data centers over IP on Nexus 7018 switches.
• Configuring and managing layer-2 technologies like VLANs, STP, VTP & port-security.
• Providing gateway redundancy using HSRP & creating ACL for layer-3 security.
• Configuring and troubleshooting layer-3 routing protocols like OSPF, EIGRP & BGP and also QoS.
• Creating IP-prefix-list, route-map, offset-list and distribution list for performing route manipulations.
• Creating BGP multi-homed network using BGP attributes like AS-PATH, MED and local-preference as per the environment.
• Configured IPSEC Site-to-Site VPNs to provide secure remote access to vendors and partners using SPA modules on Cisco 6500.
• Deployed Cisco 6500 series switches with SUP32 & SUP720 and, implemented VSS.
• Performed Network Security Assessment and implemented security features such as network filtering, SSH, AAA, SNMP access lists, VTY access lists and HSRP authentication.
• Maintained checkpoint 41000 and 61000 systems, juniper SRX3600.
• Worked on Enterprise application load balancing using F5 BIG-IP LTM 6400 and Cisco CSM.
• Worked with application and system teams to investigate application high availability requirements to .deploy the optimum Load Balancing mechanism and provided network oriented support for end-to-end application lifecycle management.
• Worked on Firewall rule management as part of network operations to take care of Firewall ACL requests.
• Maintained ASA 5580 to ensure high end security on the network with ACLs and Firewall. I also performed firewall troubleshooting to resolve application issues in DMZ and server farm.

Confidential

Network Engineer

Responsibilities:

• Providing documentation by creating MOPs and VISIO diagrams for the network designing team.
• Maintaining the networking devices which mean racking, stacking & cabling for the networking devices.
• Providing gateway redundancy for Cisco 2600, 2800 & 3600 routers using HSRP.
• Configuring routing protocols like EIGRP, OSPF & BGP and troubleshooting layer 3 issues.
• Implemented VTP and Trunking protocols (802.1q and ISL) on 3560, 3750 and 4500 series Cisco Catalyst switches.
• Involved in troubleshooting IP addressing issues and Updating IOS images using TFTP.
• Creating VLANS and enabling inter-VLAN routing.
• Configuring layer-2 technologies like STP, VTP with suitable parameters as per the network environment.
• Involved in troubleshooting of DNS, DHCP and other IP conflict problems.
• Managing network security with respect to port-security on access layer and access control lists on distribution layer.
• Provided Technical support for improvement, upgradation and expansion of the existing network architecture.
• Troubleshooting of TCP/IP problems and connectivity issues in multi-protocol Ethernet environment.