PROFESSIONAL EXPERIENCE:

• Network Engineer with 8 years of experience in Network designing, implementing, Deployment and Troubleshooting, and supporting production environment.
• Experienced in working on Amazon AWS Cloud Services
• Hands - On Experience in Implementation, configuration & troubleshooting various Routing Protocols like RIP, EIGRP, OSPF, BGP
• Experience in layer-3 Routing with, ASR 9K, ASR 1K, Cisco 7600, 7200, 3810, and 3925 series.
• Extensive working experience of various Switching Technologies STP, RSTP, MST, VLAN & VLAN Trunking Protocol (VTP) along with Failover Mechanisms such as HSRP, VRRP & GLBP on Layer 2 Setup, Inter-VLAN routing, Ether channel using LACP, PAGP.
• Experienced in working on Cisco Catalyst switches 6500, 4500, 3750, 2900 series
• Worked on Nexus FEX-2K (2248, 2232), 3K (3064), 5K (5548, 5020, 5010) and 7K (7018, 7010) series switches.
• Experience in VPC, VDC, Fabric path and OTV configurations.
• Extensive work experience in designing with Cisco Routers, Cisco Switches, F5 LTM/GTM and A10 SLB/GSLB Load Balancers, Cisco ASA and Checkpoint Firewalls.
• Experience in Utilizing Access-lists, Prefix-lists, Route Policies, and Route Filtering.
• Experience in implementation of Cisco ACS Servers & configuration of TACACS protocols.
• Enabled Autantications such as WPA2, PAP/CHAP, and AAA.
• Extensively used Route Reflectors, Route Influence by Attributes, Local Preference, Multi homing and Optimization of BGP.
• Experienced in dealing with the Enterprise level architecture for all network related issues.
• Experience in T1/E1/T3 technologies and different LAN & WAN technologies.
• Maintaining and updating inventory of all network hardware, Management and Monitoring by use of SSH, Syslog, SNMP, NTP, Granite, IP control, HPNA
• Good experience in physical infrastructure like structured cabling, IP address management, Racking, Stacking.
• Experience on conducting Change Management on weekly/daily basis without any DOWNTIME/OUTAGE in LIVE NETWORK and managing Business Continuity Plans (BCP).
• Proficient in using MS Visio for documentation.
• Excellent customer management/resolution, problem solving, debugging skills and capable of quickly learning, effectively analyses results and implement and delivering solutions as an individual and as part of a team.

TECHNICAL SKILLS:

Cisco Routers: ASR 9K, ASR 1K, 7600, 7200, 3925, 3810, 3600, 2800 Series.

Cisco Switches: Nexus 2K, 3K, 5K, 7K’s & Catalyst 6500, 4510, 4500-x, 3800, 3750x, 3550, 2960s

Firewalls Load: Balancers Checkpoint, Cisco ASA 55xx series, & F5 big-IP LTM/ GTM, A10 SLB/GSLB

IP Routing Protocols: BGP, OSPF, EIGRP, RIP v1 & v2, VRFs, Route redistribution, Route filtering, Summarization, Static route.

IP Services: HSRP, VRRP, DHCP, GLBP.

MPLSLDP/TDP: MPLS VPN, RSVP, VRF

LAN Switching: RSTP, STP, VTP, VLAN & Inter-VLAN routing, Dot1q

WAN /Core: Frame Relay, PPP, HDLC, Channelized links (E1/T1/E2/T2).

NEXUS Features: VDC, VPC, FEX, F&M series line cards.

Cisco: NX-OS, IOS-XR, IOS, Cat IOS.

Protocols: IPv4, IPv6, TCP, UDP, ICMP, NAT, DHCP, SNMP, IPSEC, SSH, DNS, S2S VPN

Security Server Protocols: TACACS+, Radius.

Quality of ServiceQueuing: (CBWFQ, LLQ), Traffic Shaping, RED/WRED.

Network Monitoring Tools: Cisco Works, solar winds, Cisco WAN Manager, HP Open view, wire shark.

PROFESSIONAL EXPERIENCE

Confidential, Bothell, WA

Network Design Engineer III

Responsibilities:

• Responsible for providing connectivity between AWS Cloud and all T-Mobile Data centres and DMZ’s as per requirement.
• Experienced in configuring the routers Cisco 7600 (7609), ASR 9K (9922) and ASR 1K series
• Experience with Installing and configuring the Nexus Switches NX-7K (7010) and NX-3K (3064) series.
• Created Sub-interfaces on 10G interfaces, utilized encapsulation Dot1Q and established BGP peering with AWS Virtual private clouds (VPCs)
• Configured and Trouble shooted BGP, OSPF, MPLS for Enterprise level network
• Creating and Implementing VRFs, Site to Site (S2S) VPNs between T-Mobile and its Multiple Vendors
• Migrated the S2S VPN connectivity on to the direct connect (10G WAN Links)
• Utilised Smart Domain Manager, Smart Dash Board and Smart view tracker on Checkpoint Firewalls for Updating /modifying the Policies and NAT rules
• Worked on Adding, removing, modifying the Policies in Checkpoint FWs to provide access for various vendors to DMZ’s and internal TMO applications.
• Worked on Adding/modifying NAT rules using Hide NAT and Static NAT in Checkpoint Firewall
• Working on Adding new SNAT pools, Virtual IPs (VIP), Pool members, Server groups on A10 and F5 load balancers
• Configured and worked on BGP Path manipulation attributes Local preference, multi path, multi homing for having a proper Failover connectivity
• Performed a Failover Test to AWS connectivity by co-ordinating with Deployment, sustainment, Application and cloud teams successfully without an outage
• Performed the Application Failover test between regions of AWS West and East by disabling the Pools on F5 GTMs.
• Dealt with various vendors and customers, Troubleshooting their connectivity issues and successful every time.
• Added, removed, modified various Prefix-lists and route policies on 7600 and ASR 9K in IOS and IOS-XR
• Worked on Configuring the Route Redistribute lists as per organisation requirements
• Troubleshooting various routing, FW and Load balancer Issues
• Implemented Site-to-Site VPNs over the internet utilizing 3DES, AES/AES-256 on ASA-55xx Firewalls
• Utilized the Monitoring tools, Packet capture tools for the analysing the traffic flows
• Configured the Encapsulation Dot1Q on ASR 9k 10G interfaces for providing connectivity to various Virtual Private clouds on AWS and Maintaining Different VLANs based on applications
• Experience in Utilizing MD5 autantication on individual VPCs for BGP Peering with AWS Cloud
• Experience with the New switch/Server installations, assigning VLANs, Trunking, MST and respective port configurations including Management IPs with NX-OS, IOS
• Used MS VISIO for the network related Diagrams and documentation of all required configurations
• Utilized and maintained, Updating and modifying Inventory Tools like Granite and IP control
• Experience in adding/removing VAP-groups and static routes in Crossbeam FWs
• Provided Level 2 and On-call support for the various AWS failover testing and VPC Troubleshooting
• Preparing execution and back out documents for various scheduled weekend turnovers.
• Acting as an On-call Escalation engineer to troubleshoot various Connectivity issues.
• Experience in handling multiple projects at a time and working in a stressful environment

Confidential, Gaithersburg, MD

Network Engineer

Responsibilities:

• Installing and configuring new Cisco equipment including Cisco catalyst switches 6500, Nexus 7010, Nexus 5548 and Nexus 2k as per the requirement of the Organization.
• Worked as a part of data center deployment where we converted from Cisco 6500 to Nexus.
• Experience configuring VPC(Virtual Port Channel), VDC(Virtual Device Context) in Nexus 7010/7018
• Experience with configuring FCOE using Cisco nexus 5548.
• Configured Nexus 2000 Fabric Extender (FEX) which acts as a remote line card (module) for the Nexus 5000 to connect servers and storage devices.
• In the process of Data centre fabric migration, performed migration from legacy Catalyst6513 Switches to Nexus 7010 switches adhering to ITIL change Management Procedure.
• Configured and maintained VPCs with 7010/7018 and 5548 in the network. Also configured and maintained VDCs in 7010/7018 switches, maintained VRFs in those separate VDCs.
• Worked with Sup 2E for 7010 switch, F series line cards for L2 switching and few M series line cards for L3 proxy routing purposes for F cards wire.
• Used Fabric Extenders like 2248TP GE series for the top of the rack solution and used 5548P for the end of the row solution.
• Scheduled maintenance of Nexus (2248, 5548, and 7010) switches so dat their are no Orphan ports in the network, and all Users to be dual homed, so dat they has sufficient redundancy.
• Experience in layer-3 Routing with, Cisco ASR 1000-x, 7600, 7200, 3810, 3925, 2811 series.
• Involved in complete LAN, WAN development (including IP address planning, designing, installation, configuration, testing and maintenance).
• Involved in Switching Technology Administration including creating and managing VLANS’s, Port security, Trunking, Inter-VLAN routing, LAN security etc.
• Configured HSRP and VLAN trunking 802.1Q, VLAN routing on catalyst 6500 switches.
• Worked on TACACS+ servers for AAA autantication and user autantication.
• Configured Cisco access points 1142 AP, 1252 AP and WSM.
• Implementation and configuration of IPSEC VPN & Cisco DMVPN Tunnels.
• Used DHCP to automatically assign reusable IP addresses to DHCP clients via INFOBLOX IPAM.
• Worked on Infoblox, DHCP and DNS Servers.
• 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 autantication.
• Maintained checkpoint 41000 and 61000 firewalls.
• Used ACLs (Access Control Lists) for autantication of EIGRP, BGP and to ensure high security on the network.
• Used Cisco ASA 5540 firewall for Enterprise security, configured ACL’s to ensure high security on the network.
• Configured and Implemented F5 Big-IP LTM/GTM 6900 for Load Balancing and ca handle A10 load balancers also.
• Used Network management and monitoring tools such as HP Open View, Cisco Works to ensure network connectivity.

Confidential, Hawaii, HI

Network Engineer

Responsibilities:

• Provide full ‘enable’ support to backbone network infrastructure, which consists of Cisco 72xx, 39xx Series Routers, ACS terminal servers, 2950, 3750, 3800 and 65xx Cat switches.
• Provide full fault resolution to backbone infrastructure running BGP, OSPF, RIP and MPLS routing protocols.
• Utilized Cisco BGP communities and advanced route filtering on Cisco IOS.
• Diagnose MPLS protocol problems including VRF and COS issues to full resolution.
• Network Design and Deployment of MPLS cloud - Designed, constructed, implemented, tested and launched various network nodes featuring BGP, OSPF, MPLS and VLANS using RSTP, gateway redundancy protocols HSRP, GLBP and VRRP.
• Deployed and installed various 3925 Series ISRs as Branch CE routers.
• Designed Campus branches and data centres.
• Deployed new data centres with Cisco 6506’s, F5 load balancers.
• Implemented with Cisco Layer 3 switches 3750, 4500, 6500 in multi VLAN environment with the use of inter-VLAN routing, HSRP, ISL trunk, ether channel.
• Performed VSS on cisco catalyst 6500 series switches.
• Configured and managed Cisco access layer routers and switches & carried out route redistribution & manipulated route updates using distribute lists, route-maps & administrative distance, and offset-lists.
• Design, Installation and consolidation of local server farms in multiple branch locations with Cisco 4500-X at distribution and 4948’s replacing the 3750’s at access level.
• Configured BPDU Guard, port-fast, uplink fast and other spanning tree features.
• Implemented port aggregation & link negotiation using LACP and PAGP.
• Configured Client VPN technologies including Cisco’s VPN client via IPSEC.
• Involved in operations and administration of WAN consisting Ethernet Handoffs, T1, DS3, and Optic Fibre Handoffs.
• Configuring and modifying Access-lists, policy maps, route-maps.
• Configuring and troubleshooting VLANs, STP, Trunking, Ether channel, DTP on the LAN switches.
• Configuring NAT pools on the edge routers.
• Configuring OSPF, BGP, RIP, MPLS and static routes.
• Worked on TACACS+ servers for AAA autantication and user autantication.
• Configured Cisco ASA 5540 firewall for Enterprise security, configured ACL’s to ensure high security on the network.
• Configured and Implemented F5 Big-IP LTM 6900 for Load Balancing.
• Configured Cisco access points 1142 AP, 1252 AP and WSM.
• Downloaded and upgraded IOS versions on Cisco devices.
• Working knowledge on QoS, VoIP and provided support in complex network environment.
• Working knowledge on python, Unix/Linux scripting.
• Working knowledge on juniper routers (M series).
• Preparing execution and back out documents for various scheduled weekend turnovers.
• Acting as an On-call Escalation engineer to troubleshoot various issues.
• Provided technical assistance for LAN/WAN management & troubleshooting and complex customer issues using Network monitoring tool’s such as Solar winds, Wireshark, Cisco Works.

Confidential

Jr. Network Engineer

Responsibilities:

• Proficient in OSPF, EIGRP, MP-BGP.
• Providing technical assistance and support to Cisco customerson 7200, 3925, 3800 routers.
• Implemented VTP and Trunking protocols (802.1q and ISL) on 3560, 3750 and 4500 series Cisco Catalyst switches
• Worked on Cisco Layer 2 switches (spanning tree, VLAN, QoS, VoIP).
• WAN Infrastructure running OSPF & BGP as core routing protocol.
• Experience through Hand-on Experience with configuring T1.5, Gigabit Ethernet, Channelized T3 and full T3, ATM, Frame-Relay.
• Experience in configuring CSU/DSU devices and also helped troubleshooting various CSU/DSU devices
• Tested autantication in OSPF and BGP.
• Provided technical support for intra-domain and inter-domain multicast and routing issues, IOS bugs and fault tolerance issues.
• Configured and troubleshoot OSPF, BGP and EIGRP.
• Tested BGP features such as override, Local preference, EBGP load balancing.
• Work on different connection medium like Fibre and Copper Connectivity.
• Configured and supported Multicast customers.
• Planning and configuring the entire IP addressing plan for the client’s network.
• Assist the certification team and perform configuration of LAN\WAN technologies such as Ethernet, Fast Ethernet, and Gigabit Ethernet.
• Configured WAN Infrastructure running OSPF as a core routing protocol.
• Streamlined OSPF costs in the network to account for network delay.
• Used DHCP to automatically assign reusable IP addresses to DHCP clients.
• Follow process & procedures for change & configuration management.
• Involved in design, implementation and configuration of HSRP for load balancing on L3 switches on different location of office on the switched network
• Configured port-fast, uplink fast and other spanning tree features.