Mark Mahan Email & Phone Number

Highly experienced in design, installation, maintenance and troubleshooting of secure large-scale LAN, global MPLS, SD-WAN and IP telephony services in service provider and Enterprise environments.Very experienced with MPLS and MPLS-VPN technologies. Have designed and integrated large global networks using Cisco and Juniper routers and configured all aspects of MPLS service provider networks.Develop network security policy and implement network security by specifying, installing, and maintaining various models of Cisco, Juniper, Pulse Secure, Palo Alto Networks, Versa Networks and Fortinet firewalls and VPN concentrators. Experience with VoIP and IP telephony systems such as CCM 4.2 – 7.0, CME, SRST, various flavors of voice gateways running all signaling protocols, all manner of telephony system interconnection such as PRI, CAS, analog foreign exchange and E&M, SIP endpoints and SIP trunking, and voicemail systems. Familiarity with Asterisks dial plans, trunking, and endpoint registration.Experienced with public cloud network infrastructure and services, particularly AWS and Azure. Also familiar with VMWare and KVM/QEMU based virtualization solutions.Have installed, configured, and maintained various network appliances such as DHCP, IPAM and DNS servers, Cisco ISE for TACACS+ and RADIUS, various web filters and dedicated QoS appliances. Have configured and installed Cisco WAAS, Riverbed Steelhead and XipLink WAN-Acceleration. Have performed vendor testing and selection, design, and implementation of SD-WAN services for global, dynamic remote site connectivity. Have managed various type of Cisco wireless controllers and autonomous based access point deployments.Excellent customer relation and inter-department relationship skills. Excellent written and verbal communication and documentation skills. Have managed large global technical projects.

Listed skills include Cisco Technologies, Switches, Routers, Routing, and 46 others.