LOG 归档 - 第70页共139页

IPsec IKEv2 Troubleshooting: SA_INIT and IKE_AUTH Debugs

Read IKEv2 debugs like a state machine: which message failed, what NO_PROPOSAL_CHOSEN means, and how to tell a Phase 1 fault from a Phase 2 one.

admin 2026-09-11

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BGP Communities and AS-Path Filtering on Cisco IOS-XE

Tag routes with BGP communities on IOS-XE, match them in route-maps, and back the policy with prefix-list and AS-path regex filters that actually hold

admin 2026-09-11

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BGP Session Stuck in Idle or Active: Causes and Fixes

Seven reasons a BGP session stays in Idle or Active, with the state machine, show commands, TTL, update-source and NOTIFICATION checks that isolate it

admin 2026-09-11

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Cisco IOS-XR Line Card Diagnostics: show diag and Safe OIR

Isolate a failing IOS-XR line card: node states, show diag output, hw-module error counters, context dumps, FPD checks and safe OIR steps.

admin 2026-09-11

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Catalyst 9300 StackWise Troubleshooting: Split Stacks

Diagnose and recover a split Catalyst 9300 StackWise stack: ring versus chain, four split triggers, duplicate-gateway symptoms and a recovery order.

admin 2026-09-11

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华为交换机端口镜像配置：观察端口、1:N 与 N:1 场景

华为交换机端口镜像完整配置：observe-port 观察端口与 port-mirroring 镜像端口绑定，1:N、N:1 与出入方向选择、观察口带宽预算、流镜像（MQC/ACL）精细过滤、Eth-Trunk 与堆叠场景，附验证命令解读、删除回滚与常见坑位排错清单。

admin 2026-09-11

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Arista EOS VLAN Troubleshooting: Native VLAN and Trunks

A fixed Arista EOS troubleshooting order for native VLAN, trunk allowed-list and port-mode faults, with the show commands that isolate each one.

admin 2026-09-11

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ArubaOS-CX ACL Configuration: Build, Apply and Verify

Build IPv4, IPv6 and MAC ACLs on ArubaOS-CX, apply them to interfaces, VLANs and the control plane, enable hit counts, and verify what actually matche

admin 2026-09-11

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Dell OS10 Firmware Upgrade: ONIE vs In-Place Image Install

Dell SmartFabric OS10 upgrade paths compared: in-place image install versus ONIE clean install, prerequisites, VLT-safe ordering and rollback.

admin 2026-09-11

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Juniper EVPN ESI-LAG: ESI Types, LACP and Junos CLI

Configure EVPN ESI-LAG multihoming on Juniper QFX: ESI types, structured ESI assignment, LACP system ID, DF election, verification and ESI-LAG versus

admin 2026-09-11

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