- Protocols: TCP/IP, UDP, DNS, DHCP, FTP, TELNET, SSH, GRE, IPsec.
- LAN, WAN, WLAN infrastructures.
- Layer 2: Switching, STP, BPDU, VLANs, dot1Q trunking, LACP port-channels, vPC, VSS.
- Layer 3: EIGRP, OSPF multi-area, BGP v4 (iBGP and eBGP), Route filtering, Redistribution, Static Routes, IP SLA, HSRP, Static NAT, Dynamic NAT, MPLS, IPSec Over GRE, QOS on the WAN.
- Wide area network circuits and services (MetroE, OCxx, MPLS, DS1/DS3, etc.)
- Dynamic routing interaction with ISPs (using BGP).
- Cisco Routers: (ASR1000 series, ISR4000 series, 2800/3800, 2900/3900, etc.)
- Cisco Switches: (Cat 6500, 4500, Nexus 55xx, Nexus 77xx, Nexus 9K, stackable 3750, 3960, 2960 switches, etc.)
- Security: Firewall ASA-5500-X, Fortinet, Checkpoint, Palo Alto firewalls, PA-220, PA820, PA-5220, PA5260, management from Panorama. IKEv1 and IKEv2 Site-to-Site VPN, Policy NAT, Access lists, Cisco ACS, IPSec, GRE over IPSec Tunnels, Upgrading Cisco IPS/SFR, AAA, TACACS, Radius.
- F5 load balancers (F5 Big IP).
| - WAN acceleration/optimization (Riverbed Steelheads appliances).
- SDWAN appliances such as Vmware Velocloud, Silverpeak, etc.
- IP telephony, prioritization of RTP traffic.
- Netflow analysis and using Netflow collectors.
- User level knowledge of Linux operating systems.
- Network Monitoring: PRTG, SolarWinds, CA Spectrum.
- Ticketing System: Manage Engine, CA Service Desk, ServiceNow.
- Windows Server 2008, 2012, 2016.
- ITIL Process (Incident, Change, Release, Problem)
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