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GridM BNG · High availability

Node down. Subscribers up.

N+1 clusters synchronize session state continuously, so losing a node is a routing event, not an outage. Upgrades roll through the cluster canary-style, in service, while subscribers stream on.

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Illustration mirrors the shipping GridM BNG console. Identifiers are fictional.

What ships in the box

  • N+1 node redundancy with session synchronization
  • Hitless failover: subscribers stay online through node loss
  • In-service software upgrades, canary one node at a time
  • BFD-backed upstream and downstream convergence
  • Cluster-wide health checks and automatic fault isolation

Continuous session sync

PPPoE and IPoE session state, addresses and QoS context replicate across the cluster as sessions come and go. The standby already knows every subscriber before it needs to.

Hitless failover

When a node fails, its subscribers forward through surviving nodes without re-authentication. BFD detects the loss in milliseconds and convergence completes before streams rebuffer.

Upgrades in service

Ship a release to one canary node, watch it take live traffic, then roll the rest. The maintenance window stops being a 2 AM ritual and becomes a deploy pipeline.

Reference

High availability: the spec card

Performance and HA

Data plane
Kernel-bypass, line rate on commodity NICs
Throughput
Multi-gigabit to terabit via ECMP scale-out
Redundancy
N+1 with session sync, hitless failover
Upgrades
In-service software upgrades, canary per node
FAQ

High availability, in detail

Through software redundancy: N+1 clusters synchronize session state between nodes, so a node failure triggers hitless failover and subscribers stay online. Upgrades roll one node at a time, in service. Availability comes from the cluster design rather than from duplicated hardware in one box.

Explore the rest of the platform

Session termination RADIUS AAA + CoA CGNAT + IPv6 QoS + plan enforcement Line-rate data plane Observability Central web console Security & compliance

See high availability on live traffic

Book a live demo with a network engineer. We will walk your topology, size the hardware and show real sessions terminating on the console, not slides.

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