TCP/IP and Routing (OSPF, BGP internal and multihomed), MPLS and applications (L2VPN, L3VPN, VPLS) with LDP/RSVP signaling. Cisco, Huawei, Juniper, Quagga and Mikrotik. Wireless devices like Canopy, Ubiquity (Nanostation, Airfiber), Senao, Wavion. VMware workstation, VsphereESXi. Skills in Linux, installation, configuration and maintaining of various Open source software such as DNS, Nagios, Cacti, Weathermap, Smokeping, Radius, Zabbix, ntop, syslog, rancid etc while working for ISP.