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BGP Route Reflector cluster-id: Configuration Guide

BGP Route Reflector cluster-id: Configuration Guide

BGP route reflector cluster-id guide: client roles, IOS config, why redundant RRs share one cluster-id and CLUSTER_LIST loop prevention.

admin admin 2026-09-07
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Cisco IOS NTP Configuration: Server and Source Interface

Cisco IOS NTP Configuration: Server and Source Interface

Cisco IOS NTP configuration guide: server and prefer, source interface, authentication, access groups, verification and troubleshooting unsynchronized

admin admin 2026-09-07
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Junos Rescue Configuration: Save and Recover Quickly

Junos Rescue Configuration: Save and Recover Quickly

Save and restore the Junos rescue configuration: request system configuration rescue save, rollback rescue, automatic recovery at boot and off-box cop

admin admin 2026-09-07
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Cisco IOS XR RPL Route Policy: prefix-set Examples

Cisco IOS XR RPL Route Policy: prefix-set Examples

Understand IOS XR RPL: build prefix-sets with ge/le operators and route-policies to filter BGP routes on ASR 9000, with examples and show rpl verifica

admin admin 2026-09-07
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Cisco IOS XR Commit Replace and Rollback Configuration

Cisco IOS XR Commit Replace and Rollback Configuration

Use commit replace to wipe or rebuild the IOS XR running configuration, and roll back to any labeled commit on ASR 9000, NCS and 8000 routers safely.

admin admin 2026-09-07
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华为交换机堆叠：iStack 与 CSS 的区别和选择（中文指南）

华为交换机堆叠：iStack 与 CSS 的区别和选择（中文指南）

华为盒式交换机 iStack 与框式交换机 CSS 都是堆叠技术，把多台物理设备虚拟成一台逻辑设备统一管理。本文用中文对比两种叫法的实现差异、适用机型与连线方式，并整理堆叠维护中常见的 display stack 查询、主备倒换、成员 ID 修改等 FAQ。

admin admin 2026-09-07
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Arista EOS DHCP Relay: ip helper-address Configuration Guide

Arista EOS DHCP Relay: ip helper-address Configuration Guide

Configure and troubleshoot the Arista EOS DHCP relay with ip helper-address: giaddr packet walk, global relay mode, Option 82, verification and fixes.

admin admin 2026-09-07
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ArubaOS-CX LLDP: Transmit, Receive and Verification

ArubaOS-CX LLDP: Transmit, Receive and Verification

Configure LLDP on ArubaOS-CX: enable the agent, set per-port transmit and receive, tune timers and traps, and verify neighbours with show lldp.

admin admin 2026-09-07
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Dell OS10 OSPF Configuration: Interfaces and Areas

Dell OS10 OSPF Configuration: Interfaces and Areas

Configure OSPF on Dell PowerSwitch OS10: attach interfaces to a process and area with ip ospf, set router-id, run OSPF in a VRF, and verify neighbors.

admin admin 2026-09-07
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Junos Port Security: MAC Limit and Allowed MAC Configuration

Junos Port Security: MAC Limit and Allowed MAC Configuration

Junos port security on EX and QFX: configure mac-limit and allowed-mac, pick drop, log or shutdown actions, and recover a port stuck in error.

admin admin 2026-09-07
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