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From gNMI to Kafka: A Streaming Telemetry Pipeline

Build a streaming telemetry pipeline with gNMIc and Kafka: subscriptions, dial-in versus dial-out, filtering at the collector, scaling and failure rec

admin 2026-09-24

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LACP Fallback: Keeping a Server Reachable Without LACP

How LACP fallback keeps a link usable when the server does not run LACP: fallback versus fallback-static, VSX versus standalone LAGs, and failover beh

admin 2026-09-24

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DHCP Option 82 and IP Source Guard on Access Ports

Lock down an access layer with DHCP snooping, option 82 insertion and IP source guard: the binding table, port trust rules, and the order that avoids

admin 2026-09-24

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Control Plane Policing (CoPP): Protecting the CPU

Configure CoPP so a flood of ARP, ICMP or routing packets cannot take down a switch: class maps, policy maps, default policies and safe tuning rules.

admin 2026-09-24

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TCP Tuning for High Bandwidth-Delay Product Links

Tune Linux TCP for long fat networks: calculate the bandwidth-delay product, set socket buffers and window scaling, verify with iperf3 before blaming

admin 2026-09-24

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TCAM and FIB Scaling: Why Routes Don't Install

Diagnose routes that exist in the RIB but never reach hardware: TCAM regions, host route explosion, verification commands and the design changes that

admin 2026-09-24

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Optical Transceiver DOM Monitoring: Reading the Optics

Use digital optical monitoring to catch failing optics early: the five DOM parameters, alarm versus warning thresholds, vendor thresholds, monitoring.

admin 2026-09-24

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Junos PyEZ: Python Automation over NETCONF

Automate Juniper devices with Junos PyEZ: connect over NETCONF, use configuration utilities for safe changes, load operational tables, handle errors.

admin 2026-09-24

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Cisco IOS-XE Guest Shell: On-Box Python Automation

Enable and use IOS-XE Guest Shell for on-box automation: IOX prerequisites, container networking, running Python and bash, and NETCONF from inside the

admin 2026-09-24

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Ansible Network Resource Modules: Declarative Config

Use Ansible network resource modules to manage switch configuration declaratively: facts gathering, state merged versus replaced, and idempotent verif

admin 2026-09-24

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