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Routing Protocols

BGP, OSPF, EIGRP and HSRP in production — including metric and delay-based path control across links of deliberately unequal capacity.

Also known as BGP, OSPF, EIGRP, HSRP

Left to right is time. Each row is one of the 9 disciplines this one worked alongside, ordered so kindred disciplines sit next to each other rather than alphabetically — a landscape only means anything if neighboring rows belong together. Height is the work running in that domain in that year, weighted by what failure would have cost — life-safety ×3, a statutory obligation ×2.2, the estate itself ×1.5, an evaluation ×1. Every project declares which of those it was, so each ridge traces to an entry you can open and disagree with. Only the work that used this technology is counted, so what shows here is the company it kept rather than the record around it. Height and color are on the record-wide scale rather than this page’s own, so a modest estate draws a modest landscape and any two of these pages can be read against each other.

Routing design at CCIE depth, and the specific problem that recurs: making traffic take the path you intended when the paths are not equivalent.

The clearest example is the GE power generation monitoring network, carrying real-time plant telemetry from sites in China and Perth back to an energy management center in Florida. Bonded multilink serial transport — four 2 Mbps interfaces aggregated to 8, and two to 4 — with EIGRP delay tuning to control path preference across links of unequal capacity, and HSRP router pairs at every site with cross-over links between them.

At the City of Jacksonville the same discipline appeared as OSPF area redesign with authenticated adjacencies during the data center consolidation, and HSRP on the redundant switch pair that took Layer 3 off the server stacks.

Applied in

  • SD-WAN Portfolio — Banking and State Legislature2025–2026Three concurrent SD-WAN engagements in regulated and public environments, with the low-level design at revision 2.0 and every configuration passing a routing review before production.
  • Enterprise Core Network2005–2024The city's core network across nineteen years — architecture, standards and, when it mattered, hands on the equipment.
  • Fourteen Weeks on the ToolsApril – August 2024The densest hands-on stretch of the NRI tenure — seven client engagements worked personally, in the configuration and the peer reviews and the customer calls, while taking over a team from the second day.
  • Fire & Rescue Mobile Gateway and SD-WAN Overlay2012–2023Three hundred apparatus turned into routed nodes on the enterprise network — dual carriers on private APNs, head-ends behind two providers, and a zero-trust overlay behind a firewall virtual system built for the fleet.
  • ISP Cutover, Public IP Renumbering and WAN Modernization2022–2023An estate moved to a new provider and a new public address space, then modernized for remote and hosted working without dropping the applications the business ran on.
  • Annex to Main Data Center Consolidation2010–2018Moving one data center into another with the estate live throughout, on three design documents at revisions ten, twelve and ten.
  • Biochemical Manufacturer Converged Network2010–2012Headquarters, an affiliated business and a plant site joined over encrypted tunnels on consumer DSL — where the reliability had to come from the design, because it was not coming from the circuits.
  • GE International Power Generation Monitoring Network2002–2004Real-time plant telemetry from generating facilities in China and Australia back to a monitoring center in Florida.
  • JEA Power Quality Metering Network2001–2004Voltage sags, swells and harmonics measured at ten substations — one template design, an addressing plan built for it, and fiber off the ground grid, before the data was aggregated into the PIE SCADA platform.
  • National Insurance Carrier Enterprise WAN1999–2001Five sites joined over an AT&T frame relay cloud at committed rates from 32K to 320K — an era when the design had to decide what mattered, because not everything could.

Career

Attested by

  • CCNP2000 · SupersededCisco Certified Network Professional, on the way to the lab.
  • CCIE #100422002 · Lifetime EmeritusCisco Certified Internetwork Expert, earned August 4, 2002, maintained for twenty years and carried to Lifetime Emeritus in August 2022.

See also