Case studies
The work
Anonymized engagements across WAN, data center and campus, on three continents.
80-site branch SD-WAN program
WAN & SD-WANChallenge
Retire legacy firewall and WAN at ~80 branches while keeping critical enterprise and partner services reachable.
What we did
Firewall, circuit, VLAN and NAT discovery; SD-WAN architecture; dual-Internet TLOC design; pilots; production migrations; failover testing.
Result
A repeatable per-site migration method that moves each branch onto the same template.
Global routing remediation
WAN & SD-WANChallenge
Inconsistent routing across ~500 APAC locations on regional DMVPN, MPLS/IPVPN, Internet WAN, global data centers and AWS.
What we did
BGP architecture, route preference and failover design, lab-validated before production.
Result
A ten-phase program from discovery through operational handoff.
Greenfield VXLAN/EVPN fabric
Data CenterChallenge
A next-generation data center fabric for a large global enterprise.
What we did
Dual spine, ~20 leaf switches, 100G spine-to-leaf, BGP EVPN control plane, Nexus Dashboard and NDFC, Palo Alto integration and dedicated OOB.
Result
Delivered from architecture through production; since expanded with more leaf and OOB capacity.
Ashburn brownfield modernization
Data CenterChallenge
Replace the core of a live facility without losing AWS and Azure connectivity.
What we did
New Nexus production switching, Palo Alto L3 aggregate Ethernet at 100G, a dedicated Nexus OOB core and per-rack management switching.
Result
Detailed runbooks covering prerequisites, SVI and OOB migration, validation and backout.
Enterprise campus refresh
Wireless & campusChallenge
A full campus lifecycle refresh across switching, wireless and WAN.
What we did
IDF switch replacement, core upgrades, wireless AP replacement and SD-WAN router upgrades, with on-site engineering.
Result
Production cutover completed and supported through hypercare.
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