Lawrence E. Rosenman

1905 Steamboat Springs Drive                                                                                       ler@lerctr.org

Garland, TX 75044                                                                                                            972-414-9812

·      Adapt easily to new projects, teams, systems and tools.  Aggressively tackle all projects with a positive attitude and a sense of urgency.  

·      Proficient at designing and administering networking solutions that substantially improve operating stability, efficiency and profitability.

·      Exceptional ability to assess complex infrastructure issues and develop strategies for resolution.  Persistent in exploring multiple options until a successful resolution is achieved.

SKILLS                                                Telnet, SSH, HTTP, FTP, TFTP, NTP, BGP4, SNMP, SMTP, NFS, OSPF.

Routers/Switches:  Cisco Routers (800-7500 Series, RSM, MFSC), Cisco Switches (1900 - 6500 Series), Cisco AS5x00

Networking:           Ethernet (10MB-1GB), Frame-Relay, ATM, T1, T3, OC-3, Fractional-T1, xDSL, ISDN (PRI/BRI), Network Analyzers (Ethereal, tcpdump, Sniffer), RADIUS, Cisco IOS Firewall, BIND (DNS v4/8/9), Bourne/Korn Shell, BaSH, Sendmail, FDDI, Apache, PHP PostgresSQL, MySQL, Kermit

Platforms:              UNIX, Linux, SunOS 4.x, Solaris 2.x, SVR3.2, SVR4.0, SVR4.2, Ultrix, FreeBSD, Windows 98/NT/2000/XP, MVS, VM/XA, S/390-XA, S/390-ESA, SCO UnixWare

Languages:            C, 370 assembler, PHP, Python, Perl, Bourne/K-Shell, C-Shell

EXPERIENCE          Senior Network Engineer

Effectively managed complex ISP network, utilizing a mix of Cisco 7xxx class routers, ATM, DS3, OC-3, Frame-Relay, HSSI, 10-100-1000Meg Ethernet.  Coordinated smooth customer integrations. 

  

·         Redesigned the Dallas core network removing over 6000 static routes in favor of a dynamic routing solution which resulted in a more reliable and manageable network.

·         Reduced unscheduled network outages resulting in better than 98% uptime.

·         Coordinated a seamless network integration during multiple ISP acquisitions 

·         Implemented an IP address allocation system that allowed for better use and summarization of all available network resources.

·         Implemented a cost analysis system to keep track of telco expenses.

·         Coordinated security related network enhancements to protect the core network from virus/worm attacks.

·         Provided additional support for all UNIX based applications including e-mail, UseNet News.  DNS and Web Services.

·         Automated routine system related tasks including IP Allocation, tracking of network hacking attempts, performance monitoring. 

·         Effectively used network analyzers to quickly identify network issues.

 

Environment:      Cisco routers and switches, BGP4, OSPF, EIGRP, RIP, ISDN,

                            T1, T3,  OC-3

System and Network Analyst

Product Support for multiple mainframe based data center productivity products, including Scheduling, Tape Management, and Automated Operator.

·         Level 2 and 3 support for the core products.

·         Resolved  customer identified application bugs in a timely fashion.

·         Installed corporate internet connection including email and  DNS.

·         Coordinated multiple support and build groups during acquisitions. 

 

Environment:   MVS/ESA, MVS/XA, VM/ESA, VM/XA, System/390 Assembler

Senior Project Support Analyst

Level-2/3 Product support for Network Data Mover (NDM) product.

·         Identified and corrected bugs in the NDM/VM product, as well as made it more efficient by improving the integration with GCS..

·         Implemented a source code control system utilizing Endevor/MVS to which allowed developers to easily rebuild the application environment

 

Environment:   MVS, VM (System/390), Assembler

EXPERIENCE          Sons and State Street Bank and Trust