Shankar Mahalingam

• Provide team support and process improvements through individual contributions.
• Routing and Switch protocols: BGP, EIGRP, VLAN, CDP, VTP, STP, RIP, RSTP, WLAN, MPLS
• Configured Nexus 7000/5000/2000 in Top of Rack & End of Row Architecture using vPC.
• Handling various technologies and Software/Hardware upgrades of Cisco Nexus, Routers/Switches, Cisco ACE & NetScaler Load balancers, Riverbed WAN Optimizer & ARX.
• Good understanding and exposure in Wireless technologies with exposure to Cisco Flex Controller, WLC and Prime.
• Good understanding and exposure in QoS technologies.
• Responsible for EIGRP and BGP routing protocols as well as traffic shaping and packet prioritization.
• Identify and resolve high-level network issues including complex routing issues in a mixed protocol environment
• Monitor and track network performance to determine problem areas and proactively develop solutions
• Create and update network drawings, standards and procedures.

• Maintained retail store’s LAN/WAN and supported all networks used to keep business running.
• Configured IP routing in Cisco routers (2911 and 2811) including static and dynamic Routing EIGRP and BGP.
• Configured Cisco switches 3750 and 3560 with inter VLAN communications and Vlans, Trunks, Ether channels, STP and HSRP.
• Configuration, design and installation of Cisco ASA 5585 and 5505.
• Configuration and Maintenance of Motorola Access Points and Controllers.
• Good understanding and exposure in BIG IP F5 LTM.
• Monitoring and managing network resources using Solar winds Orion NPM monitoring tool and other tools like KDS Monitoring, BT diamond and Putty.
• Tickets creation and follow ups by using Service Now ticketing tool.
• Setup NCM to maintain Cisco routers and switches configurations and IOS images.
• Co-ordinate with different ISP’s like AT&T, Verizon, iPass, Century link and local Telco.

Roles and Responsibilities:
•Configured IP routing in Cisco routers (1700, 2500 and 2600 series) including static and dynamic Routing RIPv2, EIGRP and OSPF with Stub areas.
•Configured Cisco switches 3750, 3560, 3550 and Allied Telesis 9924SP and 9924t with inter VLAN communications including static and dynamic Routing RIPv2.
•Configuration and management of VLANs and trunking in switches (CISCO, Allied Telesis, MRV) and optical converters (Allied Telesis and MRV).
•Created and managed Vlans, Trunks, Ether channels, and implement DHCP Server/Client, VTP, STP, ACL on switched network.
•Adjusted misconfigured port duplex settings, VLAN troubleshooting and configuration, as well as analysis of spanning-tree timers, worked with protocols like VTP, ISL, STP on Catalyst 3750, 3650 and AT-9900Series.
•Configuration and management of Stacking in switches (Cisco 3750, Allied Telesis).
•Initial configuration, design and installation of Checkpoint firewall in Windows Server 2003.
•Setup and maintained Checkpoint security policies including NAT and SecuRemote access.
•Check Point Firewall Administration, Rule writing as per the user requirements.
•Installed MRTG to collect bandwidth utilization statistics of Switches and WAN links.
•Setup TFTP server to maintain Cisco routers and switches configurations and IOS images and Allied Telesis Switch configuration.
•Installed and configured Red hat Linux 6.2 as Syslog server.
•Implemented SNMP on devices to allow for network management.
•Firmware upgrades of Hardware Peripherals (Cisco and Allied Telesis).
•Remote desktop access through Virtual Network Connection (VNC).
•Trouble shooting RIPv2 and EIGRP Routing on WAN Network.
•Trouble shooting issues related to Vlans, DHCP, Ether channel and STP.
•Troubleshoot all network connectivity, PC’s hardware, Cisco IOS, install and configure Cisco routers and switches.
•Responsible for providing Network diagram using Visio, excel and Word.
•Maintaining daily check lists of IT operations like Syslog backup and Antivirus Update.
•Monitoring and managing network resources using Mega vision NMS tool.

Network Support Engineer in Care IT Solutions under Wipro InfoTech concern

• Maintaining devices like Cisco Routers (1700, 2500, and 7201), cabling, communication lines and other communication systems.
• Configured Cisco switches 3750 with inter VLAN communications.
• Configuration and management of Vlans, Trunks, STP in Cisco 2950 switches.
• Performed switch configurations and troubleshoot LAN inter-networking problems.
• Trouble shooting issues related to inter vlan communications, vlans and STP.
• Troubleshoot all network connectivity, PC’s hardware, Cisco IOS, install and configure Cisco switches.
• Primary responsibilities include managing and maintaining networks and handling Network monitoring tools.
• Implementation and maintenance of LAN Network.