Roberto Castro

*** **** ***** ******, *** York, NY 646-***-**** • Email –omgw24@r.postjobfree.com

HARDWARE: Cisco 1600/1750/1751/25/26//3700/4000, 7200 VXR, CAT3500, CAT 3750, Cat 3760 & CAT6500, Juniper NetScreen 5GT, Sup 720

SOFTWARE: Cisco Call manager 4.2.3, & v7, Windows 200X Server, MS Office XP, Cisco IOS, Cat IOS

PROTOCOLS: SSH, Spanning Tree, FTP, DNS, HSRP, EIGRP, OSPF, Spanning Tree

LAN/WAN: Wireless Ethernet, Fast Ethernet, Frame Relay, T1, T3, Etherchannel

CERTIFICATIONS: CCNA WIRELESS, Cisco Unified Telepresence Specialist, Cisco Certified Voice Professional-CCVP, CCNA & JNCIS-FW

EXPERIENCE:

Network Engineer-contractor

ExternetWorks, Inc. 3/06/ present

Configure Cisco 3560 switches, Created Vlans, Spanning-tree, Etherschannel. Deployed Cisco Unified Presence 3000 for HSCB Bank, performed client consultation, site surveys, plan, design, support, and implementation of the existing voice/data infrastructure, Designed and Engineered CUCM H323 gateways and MGCP gateways. Installed and configured Call manager 4.2.3, & v7, Installed and configured Cisco Voice Gateway-Gatekeeper 3825 series, Deploy Juniper NetScreen security appliances & J2300 & 43000 series routers. Configured Cisco 3750 switches, Created VLANS for Voice & Data, rolled out over 3000 Cisco IP phones 7960, 7040, 7912, & 7020, Troubleshooting of Cisco IP phones registration, Installed Cisco VG224 Cat 6509 Switches, Upgraded Sup 720 on Cat 6500 Switches,

Network/Infrastructure Engineer

IGXGLOBAL 5/05-2/06

Provided primary support for Cisco infrastructure, cabling and fiber infrastructure, Maintain all Network equipment status including service packs, firmware updates, upgrades, security patches, Implement internal VLAN routing with router ACLs for improved internal security controls, Installed & supported Neoteris firewall, Juniper NetScreen, Created policies on NetScreen 25 & SSL-VPN secure access 1000

Customer Support Engineer 6/04-5/05

NETFAST COMMUNICATIONS, INC

Tested & upgraded Cisco 1600/1750/1751/25/26//3600/4000, 7200 VXR, 7500, AS5300 Voice Gateway, Port Adapters, Wic FXO, WicFxs, Wic1T, Wic1Tdsu, Wic2Fe2W, Pix2FE, Pix506, Pix515, Pix520, Cat2900, CAT3500, CAT5500 & CAT6500, assisted customers with configurations & troubleshooting, Upgraded Cisco IOS to latest versions via TFTP, supported customers with Juniper NetScreen 5GT

Network Specialist/Consultant

Connectivity Group, Inc. 01/02-05/04

Supported small to medium size networks, Roll out Windows 2000 professional & Server, Configured 2500 Cisco routers, Configure Catalyst 5000 Switches, Created accounts on Sun Solaris, Support users onsite & on the Telephone, Assisted customers with installation and configuration of routers, switches.

Field Support Engineer

American Management Systems 02/99-01/02

Configured & troubleshooting pix firewall, configured 2500, 3600 & 4000 series routers, Configured Catalyst 5505 switches, updated IOS for various routers, Troubleshooting of NT servers & Workstations both on site and remote locations, Rendered direct support for over 1500 users throughout 82 New York City Agencies.

EDUCATION: Iona College- B.S. - General Business Administration