- IT Professional with over 7 years of experience in implementation/deployments, administration/service requests, Tier 2/3 escalation support/ticket resolution, change management, analysis, and troubleshooting various network technologies which includes proficiency in routing, routing protocols, switching, security, firewalls, voice, wireless and data center technologies.
- Implemented trunk ports to control VLANs and VXLANs using NX - OS to ensure virtual and flexible subnets that can extend further across the network infrastructure than previous generation of switches.
- Implemented port-profiles as part of the NX-OS command structure that allows for configuration of multiple ports and port-types via inherited configurations applied to reduce errors and allows for better configuration readability.
- Implement a virtual version of Nexus1000v into VMWare to extend Nexus capabilities directly adjacent to virtual machines so that they benefit from Cisco switching capabilities and network topology consistency ensuring VMs maintain their subnet/VLAN relationships during failover.
- Implemented secure privileged administrative access to the Cisco IOS system.
- Enabled the encryption of system passwords to prevent unauthorized users access to passwords in the system configuration.
- Implement secure access to the console and vty ports, and set the interval that the EXEC command interpreter waits until user input is detected on the Console and vty ports. Also, configure the console and vty ports log messaging to not interfere with active device configuration.
- Implement VLAN Trunking Protocol to reduce administrative overhead.
- Enable secure sharing of VLAN information to prevent the introduction of rogue devices from affecting the VLAN database. Shutdown unused switchports following Layer 2 security best practices.
- Create and manage Local VLANs based on department function, and configure ports with static VLAN assignment, static 802.1Q trunks, and dynamic ISL trunking using PAgP for layer 2 forwarding. Utilize VLAN Spanning-Tree in conjunction with PVST+ for compatibility between Cisco and Juniper switches. Configure edge ports for fast-transitioning into the forwarding state to fix workstation startup connectivity delays. Modify spanning-tree parameters for manual root bridge assignment. Implement ether-channels between each switch using PAgP for negotiation. Modify ether-channel load balancing method.
- Implement WAN links between sites using frame-relay point-to-point and multipoint connections to establish connectivity between each of the four sites as required. Establish frame-relay point-to-point connections three of the sites creating a full mesh. Implement hub and spoke network between three of the sites with the main office as the hub for redundant connections.
- Implement EIGRP routing for point-to-point and Non Broadcast Multi-Access networks. Ensure that the spoke routers are receiving routing information about each other from the hub. Configure EIGRP unequal-cost load balancing to also use the lower capacity multipoint links when routing packets.
- Prevent neighbor adjacencies from being formed as well as the sending and receiving of routing updates on unnecessary interfaces. Implement EIGRP MD5 Message Authentication between sites to prevent unauthorized insertion of routes into the domain. Implement manual EIGRP route summarization to reduce routing protocol demand on CPU resources, memory, and bandwidth used to maintain the routing table.
- Implement OSPF routing with multiple areas for networks between sites. Implement totally stubby areas to lower the system resource utilization of routing devices for the network. Implement NSSA area to allow injection of external routes into the area and propagation into the OSPF domain.
- Implement backup and recovery of Cisco IOS Images. Perform password recovery on Cisco IOS routers/switches and a Juniper EX2200 Series switch to restore administrative access. Backup and Restore startup-comfig file for disaster recovery.
- Configured and verified internal BGP peering using directly connected networks and loopbacks by using an interior gateway protocol (OSPF) to provide routing information.
- Configured and verified external/internal BGP peering using directly connected networks, loopbacks and ebgp-multihop, and Route Reflector with debugging diagnostic commands to monitor BGP events.
- Configured MPLS manually and using automatic configuration via OSPF.
- Configured virtual routing and forwarding (VRF) instances with route-targets and route descriptors.
- Configured MP-BGP to send VRF traffic in an MPLS VPN.
- Redistributed provider edge networks into MP-BGP and verified end-to-end connectivity over the MPLS VPN.
- Implement an IPSec Site-to-Site VPN between the Cisco ASA5505 at small office location and Cisco 1841 ISR with a security IOS image at the main office. Implementation of the VPN includes the following configurations: Internet Key Exchange Policy using DES and SHA for encryption and authentication, access-lists to define VPN traffic, transform set using esp-des esp-sha-hmac to define how the traffic is protected, crypto-map to associate the previously configured elements to a peer, and application of the crypto map to appropriate interface or VPN endpoint.
- Implementation of Zone-Based Policy Firewall on the Cisco 1841 ISR with the following components: three zones, class-maps specifying traffic that must have policy applied as it crosses a zone-pair, policy maps to apply action to the class-maps’ traffic, zone-pairs, and application of policy to zone pairs.
- Implement a Clientless SSL VPN (WebVPN) to allow users to establish a secure, remote-access VPN tunnel to the Cisco ASA 5505 using a web browser. Prepare the Cisco ASA with necessary configurations to self-signed certificate generation. Generate a general purpose RSA key-pair for certificate authority identification, configure certificate authority trustpoint for the WebVPN using self enrollment, and configure CA trustpoint interface association.
- Configure Syslog on the Cisco ASA 5505 with logging to a host and internal buffer. Forward all logging to an internal Syslog server for monitoring and management. Configure and manage Syslog output generation using custom message lists. Implement FTP backup of internal buffer when it is exceeded.
- Implement Basic Threat-Detection, Advanced TCP Intercept, and Scanning Threat-Detection. Simulate attacks on network to manage threat-detection rates and verify Syslog generation.
- Utilize Cisco ASA 5505 Modular Policy Frame-Work to configure and manage layer 3/4 interface service policies, apply inspection and connection limits to services, apply inspection and QoS policing to HTTP traffic. Configure HTTP inspection policy to block restricted sites and file downloads.
- Configuration and troubleshooting of high availability pairs of F5 BIG-IP devices via a GUI and CLI to provide a virtual web server utilizing round-robin selection to balance traffic on several web servers.
- Implemented local voice network using Cisco 2811 ISR (VoIP) with a Cisco Unity Express Network Module (NM-CUE), Cisco Communications Manager Express, Cisco 3550 Switch with Power-over-Ethernet. Created and managed Data and Voice VLANs, and configure ports with static VLAN assignment and 802.1Q trunks for layer 2 forwarding. Configure edge ports for fast-transitioning into the forwarding state to fix workstation startup connectivity delays.
- Configure Fast Ethernet main and sub-interface assignments as required for inter-VLAN routing. Implement static routes for local connectivity. Implement NTP server, DHCP server, and TFTP server for support of the VoIP network. Modification of system level parameters including max phones, max directory numbers, display format for date and time, and setting the Time-Zone.
- Implement Unity Voicemail on the Cisco Unity Express Network Module. Configure a dial-peer on the Cisco 2811 ISR to define the attributes of the packet voice network connection to the Cisco Unity Express Network Module. Enable call forwarding on busy or no answer. Implement Message Waiting Indicators and Voicemail access via SMTP. Daisy-chain PCs to VoIP phones to reduce network cabling costs. Utilize PoE ports for VoIP phones to reduce power infrastructure costs.
- Implement a wireless network infrastructure providing access to wired LANs to increase mobility and productivity utilizing the following network elements: Cisco Wireless LAN Controller (WLC) 2106, a Cisco 3550 switch, a Cisco 1130AG series Access Point, and a Cisco 1121G series Access Point. Create wireless LANs and configure interface association, security parameters, and radios used. Utilize the Wireless LAN Controllers web GUI to configure and manage the wireless network. Configure internal DHCP scopes for WLANs.
- Prepared infrastructure for AP registration on same subnet as management VLAN and for AP registration on different subnet. Configure AAA AP policies to allow Self Signed Certifications for APs shipped without a Manufacturer Installed Certificate. Implement AP Grouping to ensure WLAN SSIDs are only broadcast by the APs desired.
- Configured VLANs and access ports connecting virtual machines using the NX-OS CLI on a Cisco Nexus 1000v virtual machine and VMWare vSphere Client networking.
- Configured routing policies and service profiles for separate levels in an organizational hierarchy using a Cisco Prime and the Cisco IOS 15.4 CLI. Network Services Controller virtual machine. These policies and profiles were applied to Cisco Cloud Service Router 1000v (CSR 1000v) virtual routers.
- Used the Cisco Configuration Professional GUI to configure interfaces, passwords, hostnames, DHCP, EIGRP, and SNMP on a Cisco router. Used the CCP monitoring tool to monitor traffic from that router.
- Configured the Nagios XI monitoring tool to monitor routers and switches and customized its dashboard.
- Configured SolarWinds Orion NPM and used it to monitor traffic on a network.
- Configured the CACTI tool to graph traffic from a router and to generate alerts based on a threshold traffic level.
- Used the Wireshark tool to study HTTP, telnet, and SSL traffic.
TECHNICAL SKILLS DETAIL:
Routing/Switching Technologies: Cisco Routers ASRs/ISRs, Cisco Catalyst/Nexus, Juniper, Citrix, H3C and HP Routers & Switches, WAN, LAN, TCP/IP, Cisco IOS, Spanning Tree Protocol, BPDU, CDP, ACL, NAT, PAT, RIP, RIPv2, OSPF, OSPFv3, EIGRP, BGP, MPLS, VTP, SNMP, SMTP, ARP, TCP, UDP, Static Routing, Stub Routing, VLAN Trunking, VXLANs, Multicast routing, HSRP, SVI, CEF, Etherchannel, Portfast, VSS, VPC.
Security/Firewalls Technologies: Cisco Security Manager Suite, Cisco ASA 5500 series firewalls, Cisco FWSM, Cisco IPS/IDS, Cisco ACS, Advanced Firewall Manager (AFM), Cisco ASA 1000V cloud firewall, Checkpoint Firewall, Juniper SRX series, Palo Alto, AAA, TACACS+, RADIUS, SSH, VPN, IPSec, SSL/IPSec, Data Loss Prevention, Data Management Zone, Pretty Good Protection (PGP), Public Key Infrastructure (PKI), Internet Key Exchange Policy, Port Security, MAC Address Filtering.
Wireless/Voice Technologies: Cisco WLC, IEEE 802.1x & 802.11, WLAN, WAP, AP, SSID, LWAPP, Aironet, HP MSM 760 WC, Bluetooth, Avaya, AURA - Voice Over Internet Protocol (VoIP), VoIP/SIP, CUCM, UCCM, UCCX, MGCP, RSTP, SCCP, STP, Quality of Service (QoS), PoE, MMDS, LMDS, CCK, DSSS.
Monitoring/Data Center Technologies/APPS: Wireshark, Remedy, Cacti, Nagios, Solarwinds, Spectrum, Cisco Security Manager Suite, Server, Sniffer, Ethereal, Orion - VMWare, F5 Big-IP LB (GTM/LTM), Citrix Netscaler, Cisco AnyConnect VPN mtg, Cisco Prime, Cisco IPS/IDS, Meraki Cloud-Based - Splunk, SNMPv2c, SNMPv3, DNS, DHCP, FTP, Telnet, HTTP(S), SMTP, tunneling protocols, PTP, SFTP, RDP.
Other Technologies/Compliances: IneoQuest /VOD/Volcano Video, ARPD/RPD, SEMs, APEX (QAM), DSG/CMTS/IP video, BER/SNR/MER DMSs.
- Member of a team responsible for project/implementation, escalation support, administration, configurations, maintenance, analysis, documentation and troubleshooting of various IT enterprise infrastructures.
- Technologies in network environment include but not limited to routers, switches, security firewalls, voice, wireless, monitoring tools, load balancers and related technologies.
- Member of a team responsible for escalation support, administration, configurations, maintenance, analysis, documentation and troubleshooting of various IT enterprise infrastructures.
- Technologies in network environment include but not limited to routers, switches, security firewalls, voice, wireless, monitoring tools, load balancers, remote setups and related technologies.