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Cisco ASR 9000 show environment: Power, Fans and Temperature

Cisco ASR 9000 show environment: Power, Fans and Temperature

Use show environment on the Cisco ASR 9000 to check power supplies, fans and temperatures, plus show platform and show memory summary for node health.

admin admin 2026-10-03
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Ansible Cisco IOS Config Backup and Drift Check Playbook

Ansible Cisco IOS Config Backup and Drift Check Playbook

Build an Ansible Cisco IOS playbook that backs up running-config per device, then runs a check-mode drift check against a standard port template.

admin admin 2026-10-03
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Netmiko Python Script: Configure Cisco IOS Devices

Netmiko Python Script: Configure Cisco IOS Devices

Write a Netmiko Python script for Cisco IOS: ConnectHandler setup, send_command, send_config_set, commit versus save_config, and session logging.

admin admin 2026-10-03
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Catalyst 9300: StackWise-480 vs StackWise-1T vs VSS

Catalyst 9300: StackWise-480 vs StackWise-1T vs VSS

Compare Cisco Catalyst 9300 stacking options: StackWise-320/480/1T bandwidth, ring throughput, mixing rules and how it differs from VSS designs.

admin admin 2026-10-03
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Cisco IOS XR Configuration Management: Commit and Rollback

Cisco IOS XR Configuration Management: Commit and Rollback

Master IOS XR configuration management: target versus running config, commit confirmed, rollback to a commit ID, load replace and diffing changes.

admin admin 2026-10-02
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Switch ASICs: Trident, Tomahawk and Silicon One

Switch ASICs: Trident, Tomahawk and Silicon One

What decides switch behaviour when the ports look identical: Broadcom Trident and Tomahawk versus Cisco Silicon One, buffer depth, programmability and

admin admin 2026-10-02
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Microbursts and Switch Buffer Sizing in the Data Center

Microbursts and Switch Buffer Sizing in the Data Center

Microbursts explained: millisecond congestion, why average utilisation hides them, how shared buffers behave under contention, and what to tune.

admin admin 2026-10-02
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5G and LTE Branch Failover WAN Design

5G and LTE Branch Failover WAN Design

Design 5G and LTE branch failover: cellular as backup or primary, dual SIM, VRRP router redundancy, OOBM and the metrics that control failover.

admin admin 2026-10-02
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Catalyst 9300 StackWise Virtual Dual-Active Detection

Catalyst 9300 StackWise Virtual Dual-Active Detection

StackWise Virtual on Catalyst 9300 and 9600: how the virtual switch link works, why dual-active detection is mandatory, and the configuration steps.

admin admin 2026-10-02
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ARP Spoofing in the Enterprise: Detection and Prevention

ARP Spoofing in the Enterprise: Detection and Prevention

How ARP spoofing enables man-in-the-middle attacks, how Dynamic ARP Inspection validates ARP against the DHCP snooping database, and how to deploy it.

admin admin 2026-10-02
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