Certified in Cisco technologies. advanced WAN/LAN routing and switching with more than 20 years of experience in network design and implementation, troubleshotting, and security, network level support in various environments.Experience working with security devices such as Cisco Firewalls, ASA, VPNs, IPSec, switches and Intrusion Detection Systems.Experience working on Cloud Computing Virtualization using VMWare ESXi 4.0 and WindowsHyper - V.Implementation of HSRP, VRRP for Default Gateway Redundancy.Knowledge on working with Wireless LAN Controller's, Cisco AP's, StandaloneAP's and Mesh AP's.Experience on IP Addressing, Sub netting, VLSM and ARP,reverse & proxy ARP, ICMP Concepts.Experience on Network Monitoring & Testing tools such as Wireshark/Ethereal, Cisco Works,MRTG, Ipswitch WhatsUpGood understanding of VoIP implementation and protocols such as H.323, RTP, and SIP.Experience in troubleshooting NAT, Access-Lists (ACL), and DNS/DHCP relatedissues within the LAN network.In-depth expertise in the analysis, implementation, troubleshooting & documentation ofLAN/WAN architecture and IP services.Extensive experience working on Cisco routers/switches in complex environmentswith multiple ISPs.Networking Protocols and Standards such as TCP/IP, OSI, UDP, Layer 2(VLANs, STP, VTP), Routing Protocols (RIP, EIGRP, OSPF, BGP), WAN technologies (Frame relay, Tunneles IPSec, VPNs, MPLS), QoS.Cisco etherchanel port channel vlan trunk configurationNetwork Hardware: Cisco Routers (1800, 2600, 3600, 7200 and 7600) Cisco Catalyst Switches (3560, 3750, 4500, 6500)Cisco ASA 55xx series – Cisco PIX 500e series,RIPv2, EIGRP, IS: IS, OSPF(V2,V3), BGP(iBGP and eBGP) and MP-BGPVRF, VRF: Lite, MPLS, MPLS L3 VPN and MPLS L2VPNSwitching: VLANs, Dot1Q, VTP, STP, RSTP, HSRP, VRRP, GLBP, Port Security, BPDUGuard, BPDUFilter,UdldOperating Systems: Windows, CentOS, Ubuntu and RedhatLinux.Office Suite: Microsoft Word, Excel, and Visio