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Cisco ASR 9000 IM and SYSDB Debugging: show im database

Debug Cisco ASR 9000 interface problems at the IOS XR infrastructure layer: show im database, show imds interface brief and show sysdb connections exp

admin 2026-09-21

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IGMP Snooping Querier Election: Configuration Guide

Configure an IGMP snooping querier with election on Cisco switches: SVI addressing requirements, timer behaviour, and verification of querier state.

admin 2026-09-20

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IOS-XR Segment Routing: SR-MPLS with OSPF Prefix-SID

Configure SR-MPLS on Cisco IOS-XR with OSPF: enable segment-routing mpls, assign prefix-SIDs, and verify the SRGB, label stack, and LFIB entries.

admin 2026-09-20

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Cisco IOS-XR MPLS LDP Configuration Guide

Enable MPLS LDP on Cisco IOS-XR: configure mpls ldp per interface, tune session parameters, and verify label bindings, LIB, and LFIB entries.

admin 2026-09-20

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IS-IS Level 2 to Level 1 Route Leaking Configuration

Configure IS-IS route leaking with redistribute isis ip level-2 into level-1, understand the up/down bit and remove suboptimal interarea paths.

admin 2026-09-19

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Port-Channel Load Balancing Hash Algorithm Tuning

Why an eight-link port-channel can still run at 15% on one member: pick the right EtherChannel hash and prove the flow distribution is even.

admin 2026-09-19

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Cisco Err-Disable: Causes, Recovery and Fixes

Why Cisco switch ports go err-disabled, how to read the cause, and how to configure errdisable recovery timers safely without hiding the real fault.

admin 2026-09-19

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BGP Link Bandwidth Extended Community Explained

Use the BGP link bandwidth extended community for unequal-cost load balancing: dmzlink-bw configuration, iBGP propagation, and weight calculation cave

admin 2026-09-19

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Cisco IOS XR show tech-support: Collect & Analyze

Collect IOS XR tech-support correctly: scoped collection, custom profiles, node selection and how to read the output before you open a TAC case.

admin 2026-09-19

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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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