troubleshooting 归档 - 第17页共26页

华为交换机恢复出厂设置 3 种方法（按钮/CLI/DIAG）

华为交换机恢复出厂设置的 3 种实用方法：面板按钮、CLI 命令 reset saved-configuration、BootROM/DIAG 模式，附详细操作步骤、验证方法与注意事项。

admin 2026-08-30

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ArubaOS-CX Access vs Trunk Ports: Comparison and Configuration

Access vs trunk ports on ArubaOS-CX compared: a selection matrix for real devices, CLI examples, verification commands and the five most common mistak

admin 2026-08-30

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Dell PowerSwitch OS10: Factory Reset and Default Gateway Configuration

Reset a Dell OS10 PowerSwitch from the CLI or ONIE, then verify and repair the management IP and default gateway layer by layer from the console.

admin 2026-08-30

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MC-LAG ICCP Failure Scenarios: Liveness and LACP System ID Behavior

Juniper MC-LAG ICCP liveness parameters and deployment examples: timer sizing, backup liveness, and what happens to LACP system ID behavior on failure

admin 2026-08-30

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Cisco INFRA-ESD-6-PORT_STATE_CHANGE_LINK_DOWN Triage

Triage Cisco IOS XR INFRA-ESD-6-PORT_STATE_CHANGE_LINK_DOWN on 8000, ASR 9000 and NCS 5500: map the CE port, reset it and reload the module.

admin 2026-08-29

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HPE 3PAR 控制器故障处理：隔离、离线与更换

3PAR（HPE StoreServ）控制器故障处理完整流程：先用 shownode 与 showeventlog 确认故障，再用 setnode offline 隔离节点并评估单控制器模式风险，最后更换控制器、恢复双控冗余的 CLI 命令、验证步骤与常见排错。

admin 2026-08-29

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网络环路排查实战：广播风暴与三层环路全解析

从本质到实操吃透网络环路：二层环路广播风暴的形成机制与致命故障特征（ping 丢包率飙升至 100%、设备 CPU 超 90%、MAC 地址漂移），三层环路成因与 TTL 兜底机制，以及查端口流量、查 MAC 漂移、部署环路检测三步定位法与预防措施。

admin 2026-08-29

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Linux 网络故障排查：思路、工具与实战场景

Linux 网络故障排查实战指南：先用影响范围、起始时间、症状分类三个问题锁定方向，再逐一覆盖端口连接被重置、网卡丢包与队列溢出、容器网络不通、PMTU 黑洞与偶发超时、DNS 解析缓慢等场景，从 ping、ss、tcpdump 到 nstat 与 bpftrace，并附内核调优清单与排障决策树。

admin 2026-08-29

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MLNX-OS Configuration Management: Save, Load, Reset

NVIDIA MLNX-OS configuration management: save with configuration write, switch active config files, restore factory defaults and handle dual managemen

admin 2026-08-29

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SONiC Troubleshooting: Packet Drops and Link Issues

SONiC packet drops and link errors explained: read RX_ERR, RX_DRP and TX_DRP, check optics with --dom, capture techsupport, isolate with config bgp sh

admin 2026-08-29

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