troubleshooting 归档 - 第24页共26页

BGP Network Troubleshooting: Best Practices and Commands

A systematic BGP troubleshooting workflow: verify peering state, update-source, ebgp-multihop, next-hop reachability and prefix filtering on Cisco IOS

admin 2026-08-24

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ASR 9000 Line Card Installation: Verify and Troubleshoot

Install an ASR 9000 line card and verify it: LED states, boot sequence, FPD and seating checks, tengige interface config, and show tech-support for TA

admin 2026-08-24

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ASR9000 IOS-XR Fabric Troubleshooting: Commands and Drops

Troubleshoot Cisco ASR9000 IOS-XR fabric packet drops step by step: show pfm alarms, FPD versions, NP counters, FIA link health and VOQ backpressure.

admin 2026-08-24

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华为CE交换机常见故障：Display命令快速排查指南

华为CE交换机（CE6800/CE8800/CE12800等）日常运维中常见电源告警、风扇异常、单板重启、堆叠建立失败、OSPF/BGP状态异常与VXLAN丢包等故障。本文基于华为官方技术文档，汇总各类故障的可能原因，并提供display device、display device alarm ha

admin 2026-08-24

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AOS-CX Packet Capture: tcpdump on Aruba CX Switches

Capture packets on Aruba CX switches with Linux tcpdump: CPU and interface mirrors, diag utilities filters, VXLAN decoding, DHCP reads and capture lim

admin 2026-08-24

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Dell OS10 Basic Switch Management: CLI Configuration Guide

Configure Dell PowerSwitch OS10 management: static IP on mgmt 1/1/1, management route, admin user roles, and write memory with step-by-step CLI exampl

admin 2026-08-24

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Juniper SRX Security Policy Configuration: Zones to Policy Rules

Juniper SRX security policies explained: security zones, address books, applications, first-match ordering, verification commands and deployment best

admin 2026-08-24

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使用 tcpdump 捕获网络数据包：Red Hat 实战指南

从 Red Hat 官方指南出发的 tcpdump 抓包实战：两端同时抓包、二进制格式保存、BPF 过滤器写法与常见误用、滚动捕获 -W -C 参数、-s 抓包长度取舍、权限与接口报错处理，以及各类故障在抓包里呈现什么特征的对照表，帮你一次性抓到可用于分析的证据。

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

按固定顺序梳理 Linux 网络排障命令：从 ip、dig、ss 到 nc、curl 与 tcpdump，逐个说明命令适合排查的问题、关键参数与输出解读，帮助初学者按层次收敛故障范围、避开把 TIME_WAIT 当故障之类的常见误判，并总结一套可直接套用的排障顺序和示例。

admin 2026-08-23

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Preventing DWDM Failures: Optical Network Reliability

Prevent DWDM failures: validate design assumptions, measure per-channel power and tilt, control physical degradation, and keep documentation accurate.

admin 2026-08-23

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标签：troubleshooting