LOG 归档 - 第58页共139页

BGP NSR vs Graceful Restart: Control Plane HA

Nonstop active routing versus graceful restart: how each survives a routing engine switchover, why helper routers matter, and which to enable on your

admin 2026-09-17

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BGP Prefix-Based Outbound Route Filtering (ORF)

Configure BGP prefix-based ORF so a router filters unwanted updates at the source instead of processing them locally, with IOS and IOS XR capability e

admin 2026-09-17

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IOS XR BGP maximum-prefix and discard-extra-paths

Protect IOS XR routers from route leaks and memory exhaustion with BGP maximum-prefix, warning thresholds, restart timers and the discard-extra-paths

admin 2026-09-17

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Cisco Nexus 9000 TCAM Carving and ACL Regions

How Nexus 9000 TCAM carving works, why %ACLQOS out-of-resource errors appear, and which show commands verify ACL regions before you reboot to change t

admin 2026-09-17

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Nornir Network Automation: Inventory and Tasks Guide

Build a Nornir network automation framework: YAML inventory, host and group inheritance, filtering, and composable tasks that run across multi-vendor

admin 2026-09-17

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Cisco to ArubaOS-CX Migration: Command Mapping

Translate Cisco IOS to ArubaOS-CX: access and trunk ports, LAGs, VSX vs VSS stacking, RPVST+ to MSTP, plus a pre-cutover validation checklist.

admin 2026-09-15

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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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Docker overlay2 Disk Full: Safe Cleanup Order

Fix Docker 'no space left on device': tell bytes from inodes, map overlay2 directories to containers, prune in the safe order and cap container logs.

admin 2026-09-15

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Redis Persistence: RDB vs AOF Configuration

Choose and tune Redis persistence: RDB snapshot triggers, AOF fsync policies, the hybrid RDB-preamble format and how to verify recovery behaviour.

admin 2026-09-15

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Elasticsearch Red/Yellow: Unassigned Shards Fix

Fix red and yellow Elasticsearch clusters: read cluster health, find unassigned shards, use the allocation explain API and clear the real causes.

admin 2026-09-15

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