See the SD-WAN migration, site by site.
Moving hundreds of sites from MPLS to SD-WAN with no view of underlay or overlay is a migration run blind. Here is how one global real estate firm got sight of every site and rolled out Phase 1 with confidence.
latency in high-impact regions
packet loss
live in Phase 1
Story highlights
- Sight of underlay and overlay. Synthetic tests across branch and DC sites gave the visibility the migration had lacked.
- Latency and loss under control. Latency improved 35% in high-impact regions and packet loss fell from 18% to 2%.
- Phase 1, on the board. 45 sites rolled out successfully, and monitoring expanded to endpoints for the remote workforce.
The situation
200+ sites, migrating blind.
The firm was moving more than 200 sites from MPLS to SD-WAN with zero visibility into underlay or overlay performance. Nearly a third of sites had recurring latency and heavy peak-hour packet loss. They set out to see the migration as it happened.
The problem
A migration with no view of the path.
Without underlay and overlay visibility, every site move was a gamble. Three things drove it.
Blind on both layers
Zero visibility into underlay and overlay performance during the move.
Latency kept recurring
32% of sites had recurring latency above 120ms.
Peak-hour packet loss
18% packet loss during peak hours.
What OnStak did
Test every layer, at every site.
OnStak instrumented underlay, overlay, and speed across the estate, and gave the NOC one place to watch it.
Tested underlay and overlay
Synthetic underlay, overlay, and speed tests across branch and DC sites.
Watched the apps too
SaaS and on-prem app monitoring integrated in.
Alerted on what mattered
Customized alerting for NOC operations.
Unified the view
One dashboard for the whole estate.
What changed
From a blind migration to a controlled rollout.
Every site move was a gamble.
- Zero visibility into underlay and overlay.
- 32% of sites had recurring latency above 120ms.
- 18% packet loss during peak hours.
Now the rollout is on the board.
- Latency down 35% in high-impact regions.
- Packet loss 18% to 2%.
- 45 sites live in Phase 1.
The outcome
Anonymized real estate firm · 200+ sitesA migration you can see, site by site.
The idea that holds it together
You cannot migrate what you cannot measure.
“A network move without visibility is a leap of faith. Observability turns it into a controlled rollout.”
Awais Janjua / Chief Technology Officer, OnStak