网络设备运维笔记
Cisco · Juniper · Arista · NetApp

专注网络基础设施运维与自动化，记录每一行关键命令

Cisco 网络 IOS / XR / NX-OS 配置与排障 Juniper Junos EX / MX / QFX 运维实战 Arista EOS 数据中心交换机配置 NetApp 存储 ONTAP 存储阵列运维 Mellanox 网络 MLNX-OS 与高速互联 Linux 运维网络排障与系统命令网络自动化 Ansible 与自动化配置 SONiC 开源开放网络操作系统

置顶V2bX 节点后端安装配置教程（V2board/Xboard 面板）

V2bX 是 V2board/Xboard 面板的节点后端程序（Node），负责承载 V2Ray/Xray 等协议。本文讲解 V2bX 的安装部署、配置文件说明、与面板对接及常见问题排查方法。

admin 2025-11-11

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置顶宝塔面板11.1(开心版)

宝塔面板安装与配置教程：从系统与内存要求、一键安装脚本讲起，到面板端口、安全入口与登录限制加固，再到 LNMP 环境选择、建站流程、数据库管理、SSL 证书部署与自动备份，并说明开心版的安全风险与常见问题排查方法，以及日常维护要点，适合新手快速上手。

admin 2025-11-05

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置顶BBR加速脚本集合。包含BBR Plus/BBR原版/BBR魔改版，开启自带BBR加速，BBR四合一脚本等。

BBR 加速脚本合集：Debian 与 CentOS 开启系统自带 BBR 加速，四合一脚本一键切换 BBR Plus、原版与魔改版，另有 LotServer 锐速的安装卸载、生效验证与 sysctl 参数调优建议，适合 VPS 跨境线路提速。

admin 2024-12-24

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From gNMI to Kafka: A Streaming Telemetry Pipeline

Build a streaming telemetry pipeline with gNMIc and Kafka: subscriptions, dial-in versus dial-out, filtering at the collector, scaling and failure rec

admin 2026-09-24

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LACP Fallback: Keeping a Server Reachable Without LACP

How LACP fallback keeps a link usable when the server does not run LACP: fallback versus fallback-static, VSX versus standalone LAGs, and failover beh

admin 2026-09-24

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DHCP Option 82 and IP Source Guard on Access Ports

Lock down an access layer with DHCP snooping, option 82 insertion and IP source guard: the binding table, port trust rules, and the order that avoids

admin 2026-09-24

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Control Plane Policing (CoPP): Protecting the CPU

Configure CoPP so a flood of ARP, ICMP or routing packets cannot take down a switch: class maps, policy maps, default policies and safe tuning rules.

admin 2026-09-24

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TCP Tuning for High Bandwidth-Delay Product Links

Tune Linux TCP for long fat networks: calculate the bandwidth-delay product, set socket buffers and window scaling, verify with iperf3 before blaming

admin 2026-09-24

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TCAM and FIB Scaling: Why Routes Don't Install

Diagnose routes that exist in the RIB but never reach hardware: TCAM regions, host route explosion, verification commands and the design changes that

admin 2026-09-24

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Optical Transceiver DOM Monitoring: Reading the Optics

Use digital optical monitoring to catch failing optics early: the five DOM parameters, alarm versus warning thresholds, vendor thresholds, monitoring.

admin 2026-09-24

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网络设备运维笔记 Cisco · Juniper · Arista · NetApp

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网络设备运维笔记
Cisco · Juniper · Arista · NetApp