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Cisco IOS Ansible Playbook: Standard + Unique Configs

Cisco IOS Ansible Playbook: Standard + Unique Configs

<p>Build a Cisco IOS Ansible playbook with roles: standard configs (banner, DNS, NTP, secret) via ios_banner, ios_system and ios_ntp_global, plus host

admin admin 2026-08-23
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Ansible Network Automation 101: Cisco IOS First Steps

Ansible Network Automation 101: Cisco IOS First Steps

<p>Beginner's guide to Ansible automation for Cisco IOS: install Ansible, build inventory and group_vars, run ios_command, make idempotent VLAN change

admin admin 2026-08-23
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使用 tcpdump 捕获网络数据包：Red Hat 实战指南

使用 tcpdump 捕获网络数据包：Red Hat 实战指南

来自 Red Hat 官方的 tcpdump 抓包实战指南：抓包提示与关键规则、二进制文件保存、滚动捕获 -w -W -C 参数、gzip 压缩与上传支持问题单的方法，帮助你拿到正确的抓包证据，快速定位网络故障根因，并避免常见抓包误区。

admin admin 2026-08-23
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适合初学者的 17 个最佳 Linux 网络和故障排除命令

适合初学者的 17 个最佳 Linux 网络和故障排除命令

本文整理 17 个适合初学者掌握的 Linux 网络与故障排除命令，覆盖 hostname、host、ping、curl、ip、ss、traceroute、mtr、dig、nc、telnet、route、tcpdump、lsof 等工具，并说明每个命令适合排查的问题场景与实用示例。

admin admin 2026-08-23
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Preventing DWDM Failures: Optical Network Reliability

Preventing DWDM Failures: Optical Network Reliability

<p>Prevent DWDM failures: manage power drift, wavelength alignment, fiber health, documentation accuracy and change verification with a continuous mon

admin admin 2026-08-23
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DWDM System Commissioning: The 5-Phase Checklist

DWDM System Commissioning: The 5-Phase Checklist

Commission DWDM spans in 5 phases: OTDR fiber characterization, EDFA/Raman setup, channel provisioning, OSNR verification and protection testing.

admin admin 2026-08-23
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SONiC Troubleshooting Guide: Drops, Optics, Techsupport

SONiC Troubleshooting Guide: Drops, Optics, Techsupport

<p>Troubleshoot SONiC: interpret interface counters, check optical power with transceiver DOM, generate techsupport dumps and isolate the switch with

admin admin 2026-08-23
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Getting Started with Mellanox Switches: First Configuration

Getting Started with Mellanox Switches: First Configuration

<p>Beginner guide for Mellanox switches: console setup wizard, hostname, DHCP on mgmt0, MGT1 MAC mapping, SSH access and first MLNX-OS commands on...

admin admin 2026-08-23
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NetApp ONTAP: Takeover Not Possible — Resolution Guide

NetApp ONTAP: Takeover Not Possible — Resolution Guide

<p>Resolve 'Takeover not possible' on NetApp ONTAP 9 HA pairs: run storage failover show -instance to find the reason, then fix version mismatch, mail

admin admin 2026-08-23
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Configuring PTP with Arista AVD: Fabric-Wide Best Practices

Configuring PTP with Arista AVD: Fabric-Wide Best Practices

<p>Configure PTP fabric-wide with Arista AVD: enable at fabric or node level, choose AES67/SMPTE2059-2 profiles, auto clock identity, priorities and..

admin admin 2026-08-23
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