troubleshooting 归档 - 夜莺博客

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 2026-08-23

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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 2026-08-23

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

admin 2026-08-23

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

admin 2026-08-23

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

admin 2026-08-23

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

admin 2026-08-23

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Fix breakout cable link issues on Mellanox MLNX-OS: reset SPLIT_PORT config, verify split status, firmware, cable part number, MFT version and LID

admin 2026-08-23

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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 2026-08-23

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Use ifstat on NetApp ONTAP 9 to troubleshoot Ethernet ports: CRC errors, runts, discards, speed, duplex, flow-control counters, and how to clear an

admin 2026-08-23

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Fix inter-VLAN communication failures on Juniper EX in six steps: verify VLANs, port membership, same-VLAN ping, L3 gateway reachability and cross-

admin 2026-08-23

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标签：troubleshooting