troubleshooting 归档 - 第25页共26页

DWDM System Commissioning: The 5-Phase Checklist

Commission DWDM spans in 5 phases: OTDR fiber characterization, EDFA/Raman setup, channel provisioning, OSNR verification and protection testing.

admin 2026-08-23

0 0 0

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

0 0 0

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

0 0 0

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

0 0 0

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

0 0 0

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

0 0 0

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

0 0 0

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

0 0 0

Cisco NCS 1002 Troubleshooting: General Diagnostics Guide

Cisco NCS 1002 troubleshooting: validate software install, isolate node and management faults, section optics with loopbacks, plus alarms and TAC data

admin 2026-08-23

0 0 0

Unexpected MAC Learning on Catalyst 9000 Switches

Catalyst 9300 learned the gateway MAC on random access ports, breaking a VLAN. How packet reflection, dot1x MAB and stuck MACs caused it, proven with

admin 2026-08-23

0 0 0

标签：troubleshooting