TCP/IP & BGP
Global routing, provider uplinks, SD-WAN connectivity and structured packet-flow analysis for production IP networks.
Surmann.IT / Network Architecture
Networks,
that carry.
Senior Network Architect for complex, business-critical network and platform environments.
Long-standing experience in design, operations and optimization. With deep protocol knowledge, clear analysis and a view toward production operations.
25+years of IT and network experience
DCArchitecture & operations in a datacenter
GlobalRouting, platforms and datacenters
24/7Operations and resilience
Focus Areas
From protocol detail to production operations.
Technical depth is valuable when it leads to robust decisions and systems that can be operated cleanly.
EVPN & Switching
Scalable datacenter and provider overlays with EVPN/VXLAN, MPLS/LDP and Juniper or Cisco platforms.
Security & Availability
Firewall policy design, VPN, DDoS mitigation plus HA and failover concepts for resilient infrastructure.
Platforms & Operations
Linux, MySQL/MariaDB, PHP legacy, cloud, monitoring and incident analysis in interaction with the network.
How I Work
Complexity becomes manageable when it is made visible.
01
Understand first, then change.
Deep protocol knowledge and clean fault isolation instead of actionism in production networks.
02
Design with operations in mind.
Technical architecture, resilience and long-term optimization belong together.
03
Stay calm when it matters.
Experience from globally reachable platforms, critical operations and complex incidents.
Services
Technical support where networks become critical.
No broad catalogue, but focused help with architecture, analysis and operations of complex network and platform environments.
Typical Engagements
01
Architecture Review
Assess existing structures, make risks visible and derive viable next steps.
02
Understand Unstable Behavior
When reachability, redundancy or packet flow are not reliably stable and the cause remains unclear.
03
Problem Case & Escalation
When a case is stuck, several teams are involved or a clear technical root cause is missing.
04
Hardware & Platform Selection
Technical assessment of routers, switches, firewalls and platform components with regard to operations, redundancy, growth and budget.
BGP, Routing & SD-WAN Analysis
Review of BGP designs, provider uplinks, SD-WAN connectivity, policies, prefix filters, RPKI/ROA and fault scenarios in global routing.
EVPN & Datacenter Fabric
Design and review of scalable switching architectures with EVPN/VXLAN, MPLS/LDP, spine-leaf fabrics and Juniper or Cisco platforms.
Incident & Problem Analysis
Structured fault isolation for complex incidents, packet-flow analysis, debugging and reliable technical recommendations.
Platform Operations, MySQL/MariaDB & Legacy Migrations
Support for Linux, MySQL/MariaDB server operations, performance analysis, migration of old PHP/platform stacks, monitoring, HA/failover and production-oriented troubleshooting.
Selected Results
What remains in operation.
Concrete examples, deliberately focused on operational impact.
Distributed Infrastructure
Operation of a Europe-wide network and distributed datacenter infrastructure across multiple sites.
Global Platforms
Built and operated globally reachable online platforms on-premises and in AWS, including resilience and 24/7 operations.
Incident Analysis Under Pressure
Structured analysis of complex network and platform incidents, clear isolation and reliable technical decisions during live operations.
Direct Exchange
A complex network starts with the right questions.
You want to assess an architecture, analyze an incident structurally or evolve a production platform? Let's talk.
Email: surmann@funil.de
Phone: 0151 26536915