• Installation, configuration and troubleshooting of CISCO 7606s,3600,2600 series routers and CISCO switches such as 3750, 2950.• Configuration, management and troubleshooting of various routing environments using default and static routing protocol as well as major dynamic routing protocols such as RIP, IGRP, EIGRP and OSPF.• Bandwidth allocations, Network design/planning and IP Subnetting & allocation of IPS to IT companies.• VLANs, Spanning Tree Protocol.• Backup and restoration of Cisco IOS and Configuration.• Password recovery of Routers and Switches.• Ensuring infrastructure security through the use of access lists.• Configure NAT such as Static NAT, Dynamic NAT, and Port Address Translation.• Planning and commissioning of new leased line connectivity for customers (both shared and clear pipe) using PTCL infrastructure• Installation, configuration and managing Active Directory on Win Server 2k3.• Installation, configurations and Managing PDC and ADC domain controller, Child Domain.• Recover Domain in case of failure of Domain Controller. • Implementing GPO in domain. • Internet Connection Sharing.• Installation, Configuration and Troubleshooting of ISA Server. • Installation and configuration of different servers such as DNS, DHCP, FTP and Exchange server 2003. • Implementing the Web Server to launch the web sites. • Installation of OS/application software, troubleshooting of computer systems for all users in PSEB.