What is a broadband network gateway?
Where the BNG sits in an ISP network, what it terminates, and what it owns that a router does not.
In preparationTechnical guides
Long-form guides for network engineers
Each guide covers one decision an ISP actually has to make, with the trade-offs stated rather than the conclusion assumed.
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BNG or BRAS: what actually changed
The terminology shift, and the architectural differences that matter when replacing an incumbent.
In preparationPPPoE or IPoE: choosing an access model
Session overhead, subscriber identification, and what migrating an existing PPPoE base really involves.
In preparationWhat CGNAT costs, and what it saves
IPv4 exhaustion arithmetic, port-block sizing, and the logging obligations carrier NAT brings with it.
In preparationDeterministic or dynamic CGNAT
Why the allocation model, not the throughput, decides your compliance logging volume.
In preparationShaping, goodput and the missing 10%
Why a 300M plan measures below 300M on a speed test, and what to do about it.
In preparationDesigning subscriber QoS that holds up
Modelling contention where it exists instead of guessing at a fair-use ratio.
In preparationRADIUS for broadband: attributes that matter
Attribute design, mid-session plan changes, and the failure modes worth instrumenting.
In preparationEvaluating a BNG platform: a checklist
Scale, service chain, provisioning, compliance and operational visibility — what to actually test.
In preparationMigrating off an incumbent gateway
Running two gateways side by side and moving VLAN ranges without a cutover night.
In preparationThese are in preparation. Rather than publish thin pages to fill a content calendar, we are writing them one at a time. If one of these decisions is in front of you now, ask us and we will send the working notes.
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