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标签：high-availability

Catalyst 9300: StackWise-480 vs StackWise-1T vs VSS

Catalyst 9300: StackWise-480 vs StackWise-1T vs VSS

Compare Cisco Catalyst 9300 stacking options: StackWise-320/480/1T bandwidth, ring throughput, mixing rules and how it differs from VSS designs.

admin admin 2026-10-03
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SRX Chassis Cluster Failover: Redundancy Groups

SRX Chassis Cluster Failover: Redundancy Groups

Junos SRX chassis cluster failover explained: redundancy groups, priority, preempt, control and fabric links, manual failover and verification command

admin admin 2026-09-23
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Cisco IOS IP SLA and Object Tracking Failover

Cisco IOS IP SLA and Object Tracking Failover

Build reliable dual-ISP failover with Cisco IP SLA and object tracking: probe types, delay up/down dampening, tracked static routes, boolean lists and

admin admin 2026-09-23
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MongoDB Replica Set Configuration and Failover Operations

MongoDB Replica Set Configuration and Failover Operations

Build a MongoDB replica set: initiate with a config document, add members, tune election priorities, and resync a member that has fallen off the oplog

admin admin 2026-09-20
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G.8032 ERPS Ethernet Ring Protection Configuration

G.8032 ERPS Ethernet Ring Protection Configuration

Configure ITU-T G.8032 Ethernet Ring Protection: ring profiles, RPL owner and neighbour, R-APS channels, CFM monitoring, and sub-50ms failover verific

admin admin 2026-09-20
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Proxmox VE Quorum Loss: Corosync Recovery Steps

Proxmox VE Quorum Loss: Corosync Recovery Steps

Diagnose Proxmox VE quorum loss and corosync failures: read pvecm status, avoid unsafe recovery, and restore quorum without corrupting the cluster.

admin admin 2026-09-15
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HSRP vs VRRP vs GLBP: FHRP Configuration Compared

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 admin 2026-09-15
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Nexus vPC: Peer-Gateway, Orphan Ports and Health Checks

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 admin 2026-09-14
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MetalLB Layer2 vs BGP: Address Pool Setup

MetalLB Layer2 vs BGP: Address Pool Setup

MetalLB on bare metal: compare Layer2 leader election with BGP service-IP advertisement, then build IPAddressPool, L2Advertisement and BGPPeer objects

admin admin 2026-09-14
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Cisco NX-OS ISSU: Impact Checks and Upgrade Workflow

Cisco NX-OS ISSU: Impact Checks and Upgrade Workflow

Cisco NX-OS ISSU upgrade checks: read show install all impact, resolve feature incompatibilities, handle EPLD and vPC, then verify the switch afterwar

admin admin 2026-09-12
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