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SONiC Troubleshooting Guide: Drops, Optics, Techsupport

SONiC troubleshooting workflow: read RX_ERR, RX_DRP and TX_DRP correctly, check optics with DOM, capture techsupport dumps and isolate a suspect switc

admin 2026-08-23

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Getting Started with Mellanox Switches: First Configuration

First-configuration walkthrough for Mellanox/NVIDIA MLNX-OS switches: console setup wizard, DHCP on mgmt0, the MGT1 MAC address, SSH access and static

admin 2026-08-23

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MLNX-OS: Troubleshooting Breakout Cable Link Issues

Fix breakout cable link issues on MLNX-OS: reset SPLIT_PORT, verify split status and firmware, match cable part numbers, validate MFT versions and con

admin 2026-08-23

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NetApp ONTAP: Takeover Not Possible — Resolution Guide

Fix 'Takeover not possible' on ONTAP 9 HA pairs: read the reason from storage failover show -instance, then fix version, mailbox, interconnect or disk

admin 2026-08-23

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NetApp ONTAP: Troubleshoot Ethernet Ports with ifstat

Use ifstat on NetApp ONTAP 9 to troubleshoot Ethernet ports: CRC errors, runts, discards, speed, duplex, flow control and switch counter comparison.

admin 2026-08-23

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Securing BGP with TCP-AO on Arista EOS and Juniper

Configure TCP-AO for BGP on Arista EOS 4.28.2F+: multi-agent routing model, shared secret profiles, key IDs and lifetimes, plus verification commands.

admin 2026-08-23

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Configuring PTP with Arista AVD: Fabric-Wide Best Practices

Configure PTP fabric-wide with Arista AVD: enable at fabric or node level, pick aes67 or SMPTE 2059-2 profiles, auto clock identity, EOS verification

admin 2026-08-23

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Arista EOS Configuration Cheat Sheet: Commands That Matter

Arista EOS configuration cheat sheet: management hardening, VLANs, trunks, port-channels, STP, OSPF, BGP, VRRP, ACLs and SNMPv3, plus config sessions.

admin 2026-08-23

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Juniper EX: Troubleshooting Inter-VLAN Communication

Fix inter-VLAN communication failures on Juniper EX with a six-step workflow: verify VLANs, port membership, L2 ping, L3 gateway and cross-VLAN routin

admin 2026-08-23

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Juniper EX: Troubleshoot an IRB or VLAN Interface (KB22220)

Juniper EX IRB or VLAN interface down? Work the KB22220 decision tree: admin status, VLAN membership, active member check and ELS vs non-ELS commands.

admin 2026-08-23

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