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Sr. Network Engineer Resume

SUMMARY:

  • IT Professional with over 15 years of network experience in engineering, administration, architecture, designing, analysis, management, configuration, testing, escalation support, project / change management, vendor/client relations and troubleshooting for various network technologies for medium to global enterprise environments which includes proficiency in wireless, routing, routing protocols, switching, security, firewalls, load balance, voice and data center technologies.
  • Implement trunk ports and implement granular control of 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.
  • Implement port-profiles as part of the NX-OS command structure that allows for configuration of multiple ports and port-types via inherited configurations applied via a single command that reduces administrative error and allows for better configuration readability.
  • Implement a virtual version of Nexus: 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.
  • Implement secure privileged administrative access to the Cisco IOS system. Enable 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-comfit file for disaster recovery.
  • Configured and verified internal BGP peering using directly connected networks.
  • Configured and verified internal BGP peering using loopbacks by using an interior gateway protocol (OSPF) to provide routing information.
  • Configured and verified external BGP peering using directly connected networks.
  • Configured and verified external BGP peering using loopbacks and ebgp-multihop.
  • Configured and verified internal BGP peering using a Route Reflector.
  • Used debugging diagnostic commands to monitor BGP events.
  • Configured and verified MPLS manually and using automatic configuration via OSPF.
  • Configured and verified virtual routing and forwarding (VRF) instances with route-targets and route descriptors.
  • Configured and verified MP-BGP to send VRF traffic in an MPLS VPN.
  • Redistributed provider edge networks into MP-BGP.
  • 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 generation. Generate a general purpose RSA key-pair for authority identification, configure authority trustpoint for the WebVPN using self enrollment, and configure CA trustpoint interface association.
  • Configure Syslog on the Cisco ASA5505 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 ASA5505 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.
  • Implement a local voice network with the following network elements: Cisco 2811 ISR (VoIP) with a Cisco Unity Express Network Module (NM-CUE) installed, Cisco Communications Manager Express, a standard Cisco 3550 Switch, and a Cisco 3550 switch with Power-over-Ethernet. Create and manage 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 intervlan 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: Administrate 4 Cisco Wireless LAN Controller (WLC) 5508, 8510, with 1400 different models Cisco APs. Cisco 3550 switch, 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.
  • Prepare 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 s for APs shipped without a Manufacturer Installed . 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 Network Services Controller virtual machine. These policies and profiles were applied to Cisco Cloud Service Router 1000v (CSR 1000v) virtual routers.
  • Configured a CSR 1000v router using the Cisco IOS 15.4 CLI.
  • 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.
  • Implementation and tuning of management capabilities and basic security features related to PA-2000 series security appliance using PAN-OS 6 including SSH and WebGUI access, custom rules, virtual-wire and routed interfaces, trust/untrust and dmz zones along with logging and auditing, installation/upgrade, etc. Finished Palo Alto on-line course from CBTNuggets

TECHNICAL SKILLS DETAIL:

Security/Firewalls Technologies: Cisco Security Manager Suite, Cisco ASA 5500 series firewalls, ASDM, Cisco IPS/IDS, Cisco ISE, Cisco ASA 1000V cloud firewall, Palo Alto Firewall, Juniper SRX series, Protocols & Standards - AAA, TACACS+, RADIUS, SSH, VPN, IPSec, SSL/IPSec, DMVPN, Data Loss Prevention, Data Management Zone, Pretty Good Protection (PGP), Public Key Infrastructure (PKI), Internet Key Exchange Policy, Port Security, MAC Address Filtering, SSL, SSL offloading

Wireless Technologies: Cisco WLC, IEEE 802.1x & 802.11, WLAN, WAP, AP, SSID, LWAPP, Aironet, Avaya, CDMA EVDO/eHRPD; LTE/EPC, VoLTE/IMS/VoIP/SIP, WiFi. Cisco MerakiRouting/Switching Technologies - Cisco Routers (7200, 2900, 1900, 800 Series), Cisco Catalyst Switch (6500, 5500, 4900, 4500, 3750, 3560-X, 3100), Cisco Nexus 1kv, 2k, 5k Series, Juniper, HP & Brocade Routers & Switches - WAN, LAN, TCP/IP, Cisco IOS, Spanning Tree, BPDU, CDP, ACL, NAT, PAT, RIP, RIPv2, OSPF, OSPFv3, EIGRP, BGP, MPLS, VTP, SNMP, SMTP, ARP, TCP, UDP, Static & Stub Routing, VLAN, VLAN Trunking, VXLANs, Multicast routing, HSRP, SVI, CEF, Etherchannel, Portfast, VSS, VPC.

Voice Technologies: 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, VMware, Solarwinds, Cisco Security Manager Suite, Server, Sniffer, Ethereal, Orion - VMware, F5 Big-IP load balancing (GTM/LTM), VIP/VServer, Citrix load balance (NetScaler), Cisco Prime, Cisco IPS/IDS, Meraki cloud.based - Splunk Enterprise, SNMPv2c, SNMPv3, DNS, DHCP, FTP, Telnet, HTTP(S), SMTP, tunneling protocols, PTP, SFTP, RDP, Ethereal, QXDM, InfoBlox IPAM

Other Technologies: Languages English, Chinese, and (to small extent) Japanese, Software Perl, Oracle database, SQL, C/C++, Java, Python, HTML, Perl, bash shell script; Interface 3GPP/3GPP2 LTE EPC, A10/A11/A12, PI/Sta; S11, S5 / S8, S6a, S1-U, S1-MME, Gx, Gy, Cx, Sh PCRF, Sh TAS, S6b; Protocol AAA/Radius & Diameter, PPP/Mobile, L2TP, GRE/GTP, PCC; PDN Products ALU AAA server, Bridgewater AAA/LDAP/HSS/PCRF, Ericson MME/CPG, Confidential DRA, Cisco PDSN/HA/HSGW/SGW/PGW/ASR5000; Platform and OS PC, Windows, Unix/Linux, Solaris, Oracle/SQL; Windows GUI automatic testing, Spirent landslide, NetScout, Visio; Skype

PROFESSIONAL EXPERIENCE DETAIL:

Confidential

Sr. Network engineer

Responsibilities:

  • Lead of a member responsible for design, implementation, integration, validation, development, updates, setup, monitoring, maintenance, project/change management and troubleshooting for Company Network include in charge of Cisco wireless WLC, and Switch, F5 load balancers. Just deployed 2 Cisco ISE for Employee wireless 802.1x with EAP-TLS, Guest WiFi Portal, Device Admin for Switch, F5, ASA, WLC both for RADIUS and TACACS+ on ISE, with also support level 15 privilege; VPN Authentication on ISE; and put 2 Cisco ISE behind F5 Load Balance, and also integrated Meraki AP with Cisco ISE for 802.1x, etc. Installing 2 Palo Alto firewalls and Panorama. Also take care any issue, tickets related to router and switch, Cisco Prime, 2 Nexus switches, ASA firewall, MPLS in each store, VRF, VMware, splunk, deploy Cisco Meraki MR, MS, etc.
  • Professional responsibilities which were high priority included network engineering design, integration and operation, close network service request, and network incident tickets, troubleshooting, and documentation, administration, following policies and procedures and scheduling as needed reports to management.

Confidential

Sr. Network engineer

Responsibilities:

  • Lead of a member responsible for design, implementation, integration, validation, development, updates, setup, monitoring, maintenance, project/change management and troubleshooting for various network enterprises to support more than 20 data centers global.
  • Technologies handled by the team include but not limited to routers, switches, firewall, and load balancer; routing protocols include BGP, OSPF; vlan; spanning tree; firewall, ACL, NAT, network object, VPN; VIP and VServer, SSL, InfoBlox IPAM etc.
  • Professional responsibilities which were high priority included network engineering and operation, close network service request, and network incident tickets, troubleshooting, and documentation, administration, following policies and procedures and scheduling as needed reports to management. For example, 20% time working on Network engineering, 80% time working on Network operation, include daily based resolve 5+ tickets, that 50% on ASA, Juniper firewall, 50% on load balancer. Working on Migration from 3 old Juniper firewalls to 2 ASA firewall for one of data center.

Confidential

Sr. Core Network engineer

Responsibilities:

  • Lead of a member responsible for design, implementation, integration, validation, development, testing, regression testing, updates, setup, monitoring, maintenance, client/vendor relations, project/change management and troubleshooting for various wireless enterprises.
  • Technologies handled by the team include but not limited to routers, switches, Wi-Fi, system integration, regression testing who focuses on integration testing Linux based ALU AAA server related features.
  • Specific responsibilities included load testing AAA servers.
  • Professional responsibilities which were high priority included documentation, administration, following policies and procedures and scheduling as needed reports to management.

Confidential

Professional Services Architect

Responsibilities:

  • Professional lead to a team responsible for testing and modifications where you needed to follow the policies, procedures and guidelines.
  • Technologies responsible for wireless, Linux, and test plans for LAN/WAN technologies.
  • Responsibilities included documentation, administration, following corporate policies and procedures and scheduling reports to management.

Confidential

Principal on-site Engineer

Responsibilities:

  • Member of a team of professionals responsible for on-site support, monitoring, maintenance, client/vendor relations and troubleshooting of various network enterprises.
  • Technologies handled by the team include but not limited to local area network (LAN) technologies, wide area network (WAN) technologies, server and enterprise applications and desktop technologies, core network data traffic, linux shell scripts daily and Confidential applications.
  • Professional responsibilities included client/vendor relations, administration, documentation, following corporate policies and procedures and scheduling as needed reports to management.

Confidential

Sr. Core Network Engineer

Responsibilities:

  • Professional lead to a team responsible for administration, maintenance, on-call NOC support, configuration, monitoring, network support, testing and troubleshooting of various network enterprises.
  • Technologies handled by the team include but not limited to local area network (LAN) technologies, wide area network (WAN) technologies, server and enterprise applications and desktop technologies.
  • Specific responsibilities included handling AAA, LDAP and Linux and Unix based devices.
  • Responsibilities included administration, documentation, following corporate policies and procedures and scheduling as needed reports to management.

Confidential

Senior QA Engineer

Responsibilities:

  • Lead to a team of professionals responsible for daily support, testing, implementation and troubleshooting of various network enterprises.
  • Technologies handled by the team include but not limited to local area network (LAN) technologies, wide area network (WAN) technologies, server and enterprise applications and desktop technologies.
  • Specific responsibilities included handling but not limited to HLR, Oracle data base and SQL.
  • Responsibilities included administration, billing/prepay systems, documentation and scheduling as needed reports to management.

Confidential

Principal Engineer

Responsibilities:

  • Professional lead to a team responsible for integration, testing, design and troubleshooting of various network enterprises.
  • Technologies handled by the team include but not limited to local area network (LAN) technologies, wide area network (WAN) technologies, server and enterprise applications and desktop technologies.
  • Specific responsibilities included handling testing, integration, offshore personal and Confidential solutions.
  • Responsibilities included client/vendor relations administration, documentation, following policies and procedures and scheduling as needed reports to management.

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