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Honest comparison · 2026

GridM BNG vs Legacy hardware BRAS

Every operator has one: the aging BRAS chassis that still terminates half the subscriber base. This page compares staying on legacy hardware BRAS platforms, from any vendor, with migrating the role to GridM BNG.

GridM BNG

Cloud-native software BNG

VS

Legacy hardware BRAS

Incumbent platform

Side by side

GridM BNG vs Legacy hardware BRAS: the decision factors

Factor
GridM BNG
Legacy hardware BRAS
Architecture
Disaggregated software BNG on commodity x86
Aging integrated chassis, often past peak vendor investment
Hardware
Any OEM or white-box server, merchant NICs
Proprietary, frequently end-of-sale or end-of-life
Scaling model
Horizontal scale-out, add nodes with ECMP
Hard ceilings; spare line cards from secondary markets
Licensing
One plan, all features; ₹15/sub in India or per-node globally
Legacy license models plus rising support renewals
Deployment options
Bare metal, VM, containers or Kubernetes
Physical chassis only
Upgrades
In-service software upgrades, canary per node
Risky, infrequent, sometimes no longer available
Management & APIs
One central web console, cluster-wide, plus a REST API for billing
CLI and screen-scraping era management
Observability
Real-time per-subscriber analytics, built into the console
SNMP counters; little per-subscriber insight
CGNAT and IPv6
Integrated CGNAT + native dual-stack IPv6, included
Often absent or bolted on with extra appliances
Cost model
Pay as you grow on commodity hardware
Low visible capex, rising failure, energy and support cost

Vendor information is indicative, compiled from publicly available sources, and may change without notice. Product capabilities, licensing models and pricing vary by platform, software release and region. Verify current details with the respective vendor. Cisco, Juniper, Nokia and MikroTik are trademarks of their respective owners; GridM is not affiliated with or endorsed by them.

Why operators choose GridM

  • Removes end-of-life risk from the center of the network
  • Parallel-run migration with the old chassis as rollback, no big-bang cutover
  • Adds CGNAT, native IPv6 and per-subscriber analytics the old platform never had
  • Cuts power, rack space and support renewals with commodity servers

Where legacy BRAS shines

The incumbent chassis has one undeniable advantage: it is already deployed, understood and paid for. If it has capacity headroom and support coverage, there is no urgency, and migrations should be planned, not panicked.

We believe in honest comparisons. Pick what fits your network; when the criteria are cost per subscriber, automation and freedom from lock-in, we are confident in GridM.

The verdict

Riding a paid-off chassis is rational until risk and lost capability outweigh the savings. GridM BNG gives you a planned exit: run in parallel, migrate subscribers in slices, and end up on a software BNG that grows with you instead of against you.

Request a demo Explore GridM BNG
FAQ

Switching from Legacy hardware BRAS: your questions

For the BNG/BRAS role, yes. GridM BNG terminates PPPoE and IPoE subscribers, enforces per-plan QoS, speaks RADIUS with CoA and provides CGNAT and dual-stack IPv6, the functions operators deploy Legacy hardware BRAS for at the broadband edge. Routing and other roles legacy BRAS platforms may also serve are evaluated separately in your design.

Compare GridM BNG with others

vs Cisco BNG vs Juniper MX BNG vs Nokia 7750 BNG vs MikroTik

Planning a move from legacy BRAS?

Bring your topology to a demo. We will map the migration path, the hardware bill and the payback period with you.

Request a demo Talk to sales

Runs on your hardware · One plan, every feature · Migrate in slices