Network & Email · page 18

Sizes rmem and wmem for high-BDP UDP applications.

Explains somaxconn and backlog tuning for accept queues.

Compares CUBIC, BBR, and reno behavior and tuning knobs.

Walks RFC 6298 SRTT and RTTVAR math with sample numbers.

Tables BPF primitives for host, net, port, and protocol filters.

Builds display filters from field, operator, and value intents.

Suggests coloring rules that surface errors during triage.

Lists first-pass capture analysis checks from errors to retransmits.

Tables Ethernet, IP, TCP, and TLS byte overheads per packet.

Maps traffic classes to DSCP values and marking points per hop.

Tables DSCP to 802.1p CoS and queue mappings.

References EF, AF classes, CS, and best-effort behaviors.

Builds MQC class-maps from match statements and ACL references.

Generates policy-map bandwidth and priority statements.

Compares shaping versus policing with burst and violate effects.

Computes Bc and Be from CIR and a target interval.

Plans minimum and maximum drop thresholds per traffic class.

Checks ECN enablement steps and middlebox pitfalls.

Plans where to trust or rewrite DSCP markings in the access layer.

Splits an end-to-end latency target across path segments.

Allocates loss budget across links for a VoIP SLA.

Estimates MOS from latency, jitter, and loss inputs.

Computes bandwidth-delay product and the TCP window it implies.

Estimates file transfer duration from size, rate, and efficiency.