Engineer Network
Resume:
Srikar Reddy
Sr. Network Engineer
******.**********@*****.***
Professional Summary:
* ***** ** ********** ** design, deployment and troubleshooting of Routing, Switching, Firewall networks.
Strong hands on experience in installing, configuring, and troubleshooting of Cisco 7600, 7200, 3800, 3600, 2800, 2600, 2500 and 1800 series Routers, Cisco Catalyst 6500, 4500, 3750, 2950 and 3500XL series switches.
Cisco Security: Telnet, SDM, NAT/ACLs, AAA, Layer 2 Security, Layer 3 Security, IPS/IDS, Cisco (ASA, PIX) 5510, Cryptography, VPN, IPsec.
Worked extensively on Juniper MX Series Routers and EX series Switches.
Experience with configuring Nexus 2000 Fabric Extender (FEX) which acts as a remote line card (module) for the Nexus 5000
Experience working with Cisco Nexus 2148 Fabric Extender and Nexus 5000 series to provide a Flexible Access Solution for a datacenter access architecture
Experience working with OTV & FCOE on the nexus between the datacenters
Worked on Extensively on Cisco Firewalls, Cisco PIX (506E/515E/525/) & ASA 5500(5510/5540) Series.
Knowledge of implementing and troubleshooting complex layer 2 technologies such as VLAN Trunks, VTP, Ether channel, STP, RSTP and MST. Implementation of HSRP, VRRP for Default Gateway Redundancy.
Experience with different Network Management Tools and Sniffers like Wireshark (ethereal), HP-Open view, RSA envision, and Cisco works to support 24 x 7 Network Operation Center.
Experience with F5 load balancers and Cisco load balancers (ACE and GSS).
Basic and advance F5 load balancer configurations, including migrating configurations from Cisco ACE to F5 and general troubleshooting of the F5 load balancers
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.
Strong experience on Juniper SSG series Firewalls and Checkpoint R75, 76 Firewalls.
Experience with convert PIX rules over to the Cisco ASA solution.
Network security including NAT/PAT, ACL, VPN Concentrator.
Well Experienced in configuring protocols HSRP, GLBP, VRRP, ICMP, IGMP, PPP, HDLC, PAP, CHAP, and SNMP.
Moderate knowledge in configuring and troubleshooting Cisco Wireless Networks: LWAPP, WLC, WCS, Standalone APs, Roaming, Wireless Security Basics, IEEE 802.11 a/b/g, RF spectrum characteristics.
Provides technical leadership for problem escalation and resolution.
Highly motivated with the ability to work independently or as an integral part of a team and Committed to highest levels of professional.
Hands on experience on Up-gradation of Cisco IOS & Firmware of different Cisco devices & modules
Technical Skills:
Routing
OSPF, EIGRP, BGP, RIP-2, PBR, IS-IS, Route Filtering, Redistribution, Summarization, Static Routing, PBR
Switching
VLAN, VTP, STP, PVST+, RPVST+, Inter VLAN routing & Multi-Layer Switch, Multicast operations, Layer 3 Switches, Ether channels, Transparent Bridging
Network security
Cisco (ASA, PIX) 5510, ACL, IPSEC, VPN, Security context
Load Balancer
Cisco ACE load balancer, F5 Networks (Big-IP)
LAN
Ethernet (IEEE 802.3), Fast Ethernet, Gigabit Ethernet
WAN
Leased lines 64k - 155Mb (PPP / HDLC), Channelized links (E1/T1/E3/T3),
Fiber Optic Circuits, Frame Relay, ISDN, Load Balancing
Operating Systems
Windows (98, ME, 2000, XP, Server 2003/2008, Vista, Windows 7), Basic Linux
CISCO Routers
Cisco 17XX, 18XX, 26XX, 28XX, 37XX, 38XX, 39XX &72XX series
CISCO Switches
Cisco 3550, 3750, 45XX, 65XX series
JUNIPER Routers
Juniper MX480, 240, 80 series
JUNIPER Switches
Juniper EX4500, 4200
Firewalls
Cisco ASA 55XX series, Juniper SSG140, Checkpoint R75, R76
Various Features & Services
IOS and Features, HSRP, GLBP, IRDP, NAT, SNMP, SYSLOG, NTP, DHCP, CDP, LLDP, TFTP and FTP Management
AAA Architecture
TACACS+, RADIUS, Cisco ACS
Network Management
SNMP, Cisco works LMS, HP open view, Etherenal, MRTG/PRTG server, Nexus 2000, 5000, 7000 series.
Reports
Microsoft (Visio pro.), Checkpoint (Eventia reporter, Smart view)
Professional Experience:
HSA Bank, Milwaukee WI Jan 14 – Present
Sr. Network Engineer
Responsibilities:
Experience working with Nexus 7018/7010, 5020, 5548, 2148, 2248 devices
Experience with configuring Nexus 2000 Fabric Extender (FEX) which acts as a remote line card (module) for the Nexus 5000
Involved in upgrading switches from 6500 E to 4500-X
Implementation of BGP to optimize WAN routing on the core and edge routers.
Mutual redistribution of OSPF and BGP routes using route maps.
Involved in upgrades to the WAN network from existing 7200vxr with ASR1004 and 3845/3945 routers.
Upgrading branch network connectivity with total refresh of the network infrastructure with new 3845 routers and 2960 switches.
Configuration and troubleshooting on HSRP, VRRP, GLBP, RSTP, MST related issues coming in network environment
Implementation and configuration of GLBP/HSRP on multilayer switches for first hop redundancy
Hands on Experience testing iRules using Browser (IE), HTTP watch on f5 load balancers.
Managed F5 BigIP LTM appliances to load balance server traffic in critical serval access silos.
Configuration of Virtual Servers, Nodes, and load balancing Pools
Design, and configuring of OSPF, BGP on Juniper Routers and SRX Firewalls
Configuration and extension of VLAN from one network segment to their segment between Different vendor switches (Cisco, Juniper)
Configuring IPSEC VPN on SRX series firewalls
Convert Campus WAN links from point to point to MPLS and to convert encryption from IPSec/GRE to GetVPN.
Enabled STP attack mitigation (BPDU Guard, Root Guard), using MD5 authentication for VTP, disabling all unused ports and putting them in unused VLAN and ensuring DHCP attack prevention where needed
Performed basic security audit of perimeter routers, identifying missing ACL’s, writing and applying ACL’s
Troubleshooting and installing of CRS, ISR, GSR, ASR9000 and Nexus devices.
Engineering the configurations for the different branches, campus locations
Responsible for layer 2 securities which was implemented using a dedicated VLAN ID for all trunk ports, setting the user ports to non-Trunking, deployed port security when possible for user ports
Responsible for Cisco ASA firewall administration across our global networks
Key contributions include troubleshooting of complex LAN/WAN infrastructure that include routing protocols EIGRP, OSPF & BGP
Involved in the redistribution into OSPF on the core ASA firewall.
Involved in the removal of EIGRP from all devices and making OSPF the primary routing protocol.
Involved in the modification and removal of BGP from the MPLS routers.
Worked on Orion for analysis and monitoring purposes
Also prepared documentation for various VLAN’s and Voice subnetworks and worked on Visio for the same.
Migration of existing IPSEC VPN tunnels from Pre-Shared key to Certificate Authority for purpose of scaling
NISOURCE, Columbus OH Oct 12 – Jan 14
Sr. Network Specialist
Responsibilities:
Configuring, upgrading and deployment of Nexus 7010, 5596 and 2248.
Working with Cisco Nexus 2248 Fabric Extender and Nexus 5500 series to provide a Flexible Access Solution for datacenter access architecture.
Configuring Cisco Routers 7200, 3925, 3800 and switches 6500, 4510, 3750, 2811
Configuring, maintaining and troubleshooting routing protocols such as OSPF, EIGRP and BGP
Configuring HSRP between VLANs, Configuring Ether-Channels, Port Channel on 6500 catalyst switches
Configuring PAGP and LACP protocol along with BFD link detection protocol
Experience in design and implementation of new branch test and turn up.
Analyzing and resolving a high percentage of initial customer contact in the areas of PC/LAN.
Escalating customer problems to management and support groups utilizing standard escalation model.
Experience on designing and troubleshooting of complex BGP and OSPF routing problems,
Configuring DNS /NIC card issues and wall jack issues while troubleshooting IP addressing problems.
Responsible for creating, modifying, removing VLAN configuring as per the need.
Tracking overall network
Configuring Wireless utility for all employees.
Design and implementation of IPSEC VPN/GRE architecture used for multicast and unicast communication on an existing IP VPN.
Experience with CSM, F5 (LTM) Load balancers to provide efficient switching and routing for local and global traffic.
Troubleshooting IOS related bugs based on past history and appropriate release notes. Planning and configuring the entire IP addressing plan for the clients' network.
Implementing & Troubleshooting of T1, MUXES, CSU /DSU and data circuits.
Administration of ASA firewalls in the DMZ and FWSM in the Server Farm to provide Security and controlled restricted access.
Working experience with Natting techniques on firewalls such as Cisco ASA Appliance.
traffic and capacity issues that are impacting throughput, bandwidth, and quality
Pinpointing physical network conditions that are contributing to call quality issues
Engaged in branch turn up’s, helped in identifying network requirements of new building, installed new networking hardware, and coordinated with vendors for cabling/wiring
Performed troubleshooting, while maintaining trouble ticket tracking, following internal/external Escalation procedures and customer notifications.
Configured Cisco Routers for OSPF, IGRP, EIGRP, Static and default route.
Worked on HSRP and GLBP for first hop redundancy and load balancing.
Configured the Cisco router as IP Firewall and for NATing.
Prepare, update, and maintain technical and logistical network documentation
Configuring objects such as Load Balancer pools for local traffic management on F5 Load Balancers.
Decommission serial T3 circuits and replace with MPLS circuits. MPLS clouds were provided by carriers ATT, Verizon or Level 3.
Trouble-shooting end-user reported problems, thoroughly and accurately documenting problem in trouble management tool.
Time Warner Cable, NYC NY Mar 11 – Oct 12
Network Engineer
Responsibilities:
Enabled GSR RPR+ mode, installed Engine 5 SIP cards, Upgraded Cisco GSR routers GRP-Bs to PRPs (RPP+), PRP 1 to PRP 2 and IOS levels as well.
Tested various BGP features like local-preference, MED, Weight and replicated customer issue problems in the testing environment lab.
Performed various Line card memory upgrades, PRP memory upgrades and fabric upgrades on Cisco 12000 series routers.
Configured policy maps, class maps and access lists on GSRs.
Worked with JTAC and Cisco to troubleshoot various problems.
Handle customer escalations related to Internet connectivity issues, VPN issues (OSPF sync issues), etc; work with various technical teams to find a resolution in a timely fashion.
Created load balancing policies using BGP attributes such as Local Preference, AS-Path, MED, Community etc.
Managed fast Layer 3 switched/routed LAN/WAN infrastructure as a part of Network team. The LAN consisted of Cisco campus model of Cisco 3550 at access layer, Cisco 6513 at distribution/core layer.
Configuring objects such as Load Balancer pools for local traffic management on F5 Load Balancers.
Extensively used TCP/IP tool like TELNET for remote login to the routers and SSH for secure login.
Has expertise in LAN/WAN technologies (fast Ethernet, Layer2 & 3 switched/routed LAN, and Frame Relay).
Installed and maintained Cisco and F5 Load Balancer and documentation.
Improving OSPF convergence by controlling SPF algorithm, LSA/SPF throttling.
Participate in all technical aspects of LAN, WAN, VPN and security internetworking projects including, short and long term planning, implementation, project management and operations support as required.
Experience working with SONET controller interfaces in the Cisco IOS-XR.
Writing rules in such a way that they append various properties that define pool selection process.
Genpact, Hyderabad India Oct 09 – Feb 11
Network Engineer
Responsibilities:
Implementing new/changing existing data networks for various projects as per the requirement.
Troubleshooting complex networks layer 1, 2to layer 3 (routing with MPLS, BGP, EIGRP, OSPF protocols) technical issues.
Providing support to networks containing more than 2000 Cisco devices.
Performing troubleshooting for IOS related bugs by analyzing past history and related notes.
Carrying out documentation for tracking network issue symptoms and large scale technical escalations.
Ensure Network, system and data availability and integrity through preventive maintenance and upgrade.
Involved in L2/L3 Switching Technology Administration including creating and managing VLANs, Port security, Trunking, STP, Inter-Vlan routing, LAN security.
Worked on the security levels with RADIUS, TACACS+.
Completed service requests (i.e. – IP readdressing, bandwidth upgrades, IOS/platform upgrades, etc.)
Managing the service request tickets within the phases of troubleshooting, maintenance, upgrades, fixes, patches and providing all-round technical support.
Commissioning and Decommissioning of the MPLS circuits for various field offices.
Preparing feasibility report for various upgrades and installations
Identify, design and implement flexible, responsive, and secure technology services
Modified internal infrastructure by adding switches to support server farms and added servers to existing DMZ environments to support new and existing application platforms.
Configured switches with port security and 802.1 xs for enhancing customer’s security.
Monitored network for optimum traffic distribution and load balancing using Solar winds.
Validate existing infrastructure and recommend new network designs.
Created scripts to monitor CPU/Memory on various low end routers in the network.
Installed and maintained local printer as well as network printers.
Handled installation of Windows NT Server and Windows NT Workstations.
Handled Tech Support as it relates to LAN & WAN systems
Configuring and troubleshooting multi-customer network environment.
Involved in network monitoring, alarm notification and acknowledgement.
Subnetting networks. Troubleshooting DHCP and DNS Servers.
Sify Broadband, Hyderabad, India Mar 07 – Sept 09
Network Support Engineer
Responsibilities:
Upgrade Cisco 7200, 3600 Router IOS Software, backup Routers and Catalyst 3560, 4500 switch configurations
Support 24x7 operations and answer calls from the customers on network emergencies and resolve issues
Install and manage Cisco Catalyst 3500XL, & 2960 series Switches and Cisco 1800, 3900 series routers
Hands on Experience in Inter-vlan routing, redistribution, access-lists and dynamic Natting
Log messages using Syslog server and analyze the issues related to high CPU utilization and parameters that can degrade performance of the network
Involved in all technical aspects of LAN and WAN projects including, short and long term planning, implementation, project management and operations support as required
Conduct through analysis, problem solving, and infrastructure planning
Provide assistance to Network Manager and serve as Secondary Network support.
Troubleshoot and fix any backup and monitoring systems related issues in conjunction with Systems team and external vendors
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