cisco 归档 - 第8页共21页

DHCPv6 Prefix Delegation: ISP to CPE Config

Configure DHCPv6 prefix delegation between ISP edge and CPE: client pd, general prefix pools, server pools, verification and failure modes.

admin 2026-09-15

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Zabbix SNMP Switch Monitoring with LLD

Monitor switches and routers in Zabbix: enable SNMPv2c/v3 on devices, use templates with low-level discovery, and build triggers that catch real fault

admin 2026-09-15

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Cisco uRPF: Strict vs Loose Mode Anti-Spoofing

Deploy uRPF on Cisco IOS/IOS-XE correctly: strict vs loose mode, allow options, where to apply it, and how to avoid dropping valid asymmetric traffic.

admin 2026-09-15

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HSRP vs VRRP vs GLBP: FHRP Configuration Compared

Compare HSRP, VRRP and GLBP: virtual MAC addresses, election rules, default timers, preempt behaviour and object tracking, with CLI examples for each

admin 2026-09-15

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OSPF Stub and NSSA Area Types: Configuration Guide

OSPF area types compared: stub, totally stubby, NSSA and totally NSSA, how type-7 LSAs become type-5, translator election and multi-vendor CLI.

admin 2026-09-14

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Nexus vPC: Peer-Gateway, Orphan Ports and Health Checks

Cisco Nexus vPC beyond the basics: peer-gateway and ARP synchronize, orphan-port suspend behaviour, type-1 consistency checks and show vpc verificatio

admin 2026-09-14

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Spanning Tree Root Bridge Election and Design Rules

Bridge ID, path cost and the extended system ID decide your STP root. Configure root primary and secondary, add MST and guard features, then verify it

admin 2026-09-14

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BGP Best External and Add-Path: Advertise More Paths

How BGP best external and add-path (RFC 7911) stop suboptimal routing: IOS-XE bgp additional-paths commands, Junos add-path send/receive, and verifica

admin 2026-09-14

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Catalyst 9300: StackWise-480 vs StackWise Virtual

How StackWise-480 and StackWise Virtual differ under the hood: shared backplane versus fibre virtual link, bandwidth, failure domain and which to depl

admin 2026-09-13

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SPAN, RSPAN and ERSPAN: Choosing a Mirror Transport

Compare Cisco mirror transports: local SPAN, RSPAN over Layer 2 and ERSPAN over GRE, with their overhead, MTU traps and the checks that fix empty capt

admin 2026-09-13

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标签：cisco