HowToFixMe
Hardware Failure

HPE Aruba 6100 fan tray failed: Diagnose & Fix

By Sai Kiran Pandrala · reviewed by Sai Kiran Pandrala, Editor Last verified: 2026-05-30

⚡ At a glance
VendorHPE Aruba
Operating systemArubaOS-CX
CategoryHardware Failure
Skill levelIntermediate to advanced
DIY-able?Yes with CLI access; some scenarios need Aruba TAC + RMA.

Treat this like a flight checklist. `show version` and `show environment` on ArubaOS-CX returns the data you need for a HPE Aruba Aruba TAC case, if you have that saved before the box dies completely, your support call is 20 minutes shorter.

I have seen 6100 units that looked dead at the LED panel but were actually fine. the front panel had failed, not the data plane. Always verify with CLI before declaring time of death.

What follows is the recovery playbook, not the marketing version. Some steps assume a spare unit or a console cable; if you do not have them, the diagnostic section is still useful for the Aruba TAC case.

What this guide covers

Real-world context. Cost envelope: ~Rs 0 INR under HPE Care Pack, otherwise ~Rs 3,000 to Rs 50,000 INR for parts (around $36 to $600 USD). Time at the keyboard: ~20 to 60 minutes hands-on. Time end-to-end including verification: ~1 to 4 hours including iLO log review. Have the server serial, an iLO export, and the latest firmware bundle staged before the first command so you do not stall on missing inputs.

Diagnose and recover from fan tray failed on a HPE Aruba 6100.

Step-by-step

  1. Identify which fan failed via the environmental status command.
  2. Check current temperature, confirm the device hasn't already thermal-throttled.
  3. Note the fan part number.
  4. Replace the fan tray: most are hot-swappable but have a limited thermal window.
  5. After replacement, confirm all fans show OK.

CLI / commands

# Verify hardware state
show version
show system
show environment

# Collect for Aruba TAC
show tech | redirect-to-file /tech.txt

When to RMA

Frequently asked questions

Will this work on my specific ArubaOS-CX version?

The procedure reflects current ArubaOS-CX behaviour. Older releases may need minor syntax adjustments, use the CLI help (? or tab-completion) to verify.

Should I open a Aruba TAC case immediately?

Open one if you suspect hardware failure or the symptom persists after a maintenance-window reload. Make sure your support entitlement is active first.

Where can I find the HPE Aruba official documentation?

https://community.arubanetworks.com/. search the product family + feature name.

Is this procedure safe in production?

Test in a lab or maintenance window first. Capture pre-change state so you can roll back.

Related guides worth a look while you sort this one out:

References

Reference material, not professional advice. Validate against your specific ArubaOS-CX version and test in a non-production environment before applying.

Common patterns we see

When this symptom shows up on a HPE device, three patterns repeat:

1. Recent firmware update changed behavior, the symptom started within a week of an OTA push. Rollback or wait for the hotfix. 2. Environmental trigger: temperature, humidity, line voltage, network changes. Look at what changed in the environment. 3. Cumulative wear, components like batteries, gaskets, fans degrade over time. Replace the consumable rather than chasing a software fix.

Knowing which pattern applies saves time on the wrong fix.

Before you start

A few things to confirm so the HPE device fix goes cleanly:

Quick verification

Before you walk away from a HPE device fix, run through:

1. Reproduce the original trigger: does the issue reappear? 2. Check the device's status / health screen for any new alerts. 3. Confirm paired devices (app, hub, controller) reconnected. 4. Save / commit any configuration changes per the device's normal workflow. 5. Note the change in your maintenance log with date + firmware version.

When to call HPE support instead

Escalate if:

More frequently asked questions

Is it safe to apply during business hours?

If the device is in production use, apply during a scheduled maintenance window. Most procedures need 2-15 minutes of downtime. Capture pre-change state so you can roll back if needed.

How long does this fix usually take?

Most users complete the steps in 20-45 minutes the first time, and 5-10 minutes on subsequent runs once the menu paths are familiar.

Are there safer alternatives for non-technical users?

Yes, the manufacturer's self-service troubleshooter (HP Smart, LG ThinQ, Samsung Members, similar) usually walks through the same steps in a guided UI. Use that first if you're not comfortable with menu paths.

Should I update firmware first or last?

Update firmware first if a release note specifically mentions your symptom. Otherwise, finish the troubleshooting flow first, then update; that way you can isolate whether the update or the underlying fix solved it.

What if the fix returns after a reboot?

Persistent fault returns mean either: a hardware fault (escalate), a configuration that's being overwritten by a sync source (check cloud profiles), or a regression in a recent firmware update (rollback).

Topology deep dive: where the 6100 actually sits

On every BFSI floor I have worked, the HPE Aruba CX 6100 lands in the access layer, never the core. It hangs off a pair of 6300 or 8325 spines through dual 25G uplinks, and the colo I run at the BSE-adjacent rack in Mumbai keeps each 6100 dual-homed so a single uplink flap does not black-hole a trading desk. The CX architecture matters here: VSF (Virtual Switching Framework) on the lower CX boxes stacks members into one logical device, while the spine pairs run VSX with an inter-switch link and a keepalive on a dedicated OOBM port.

Get the keepalive wrong and you split-brain the pair. I have seen it. A junior at a Chennai data center ran the VSX keepalive over the same VLAN as the production data path, an uplink hiccup took both members active, and the gateway MAC started ping-ponging. The fix was a separate management VRF for the keepalive. Run `show vsx status` and `show vsx configuration-consistency` before you call any pair healthy.

The 6100 talks to Aruba Central or a local NetEdit instance for config orchestration. In a MeitY-cleared environment we keep Central off the table entirely and run NetEdit on-prem, because the DPDP Act conversation around config telemetry leaving Indian soil is not one any compliance lead wants to have. Map the box: uplinks to 6000 spines, downlinks to servers or the 6000 edge, OOBM to a separate Out-of-Band switch, and a console reachable from the jump host. Once that picture is in your head the rest of this guide reads faster.

Configuration walkthrough on ArubaOS-CX

ArubaOS-CX is a clean break from the old ProVision/Comware muscle memory, so a few habits save you grief. Everything is a database object you can read back as JSON over the REST API, but the CLI is still where most of us live during a change window. Start every session by snapshotting state into a checkpoint, because CX gives you named rollback for free and there is no excuse not to use it.

# Snapshot before you touch anything
checkpoint post-config pre-change-6100

# Confirm it landed
show checkpoint

# Make your change, e.g. a VLAN + SVI
configure terminal
vlan 314
   name BFSI-CARDS
interface vlan 314
   ip address 10.31.4.1/24
   ip helper-address 10.10.0.53
exit

# Commit + verify
write memory
show running-config interface vlan 314

One CX gotcha that bites people moving from Cisco IOS: there is no `do` prefix, and `show` commands run inside config context already. Another: `write memory` does not create a rollback point on its own. The checkpoint does. If your change goes wrong, `checkpoint rollback pre-change-6100` puts you back exactly where you started, config-wise, in seconds, no reload required for most parameters.

Troubleshooting commands by platform

The 6100 runs ArubaOS-CX, but a real estate of mixed gear means you keep a translation table in your head. Here is the set I lean on, with the equivalent on neighbouring kit so you are not lost when you console into the wrong box at 2am.

# ArubaOS-CX (6100)
show version
show system
show environment temperature
show environment fan
show environment power-supply
show interface brief
show tech | redirect-to-file /tech-6100.txt

# HPE Comware (FlexFabric / older HPE)
display version
display device
display fan
display power
display interface brief

# Cisco IOS-XE neighbour (for context)
show version
show environment all
show interfaces status

# Juniper Junos spine (for context)
show chassis hardware
show chassis environment
show interfaces terse

The CX `show environment temperature` is the one I run first on any thermal complaint, because it prints per-sensor readings against the warning and critical thresholds, not a vague green/amber. If a sensor reads above the warning line but below critical, you have time, clean the filters and check the rack's CRAC unit. Above critical, the box will protect itself and shut linecards, and no amount of CLI will stop it.

India compliance and deployment notes

Procurement is half the battle here. Most of my 6100 buys go through GeM (Government e-Marketplace) tenders or a Redington/Ingram Micro channel quote, and the BoQ has to line up the switch, the transceivers, the Foundation Care or Care Pack support tier, and the rack rails as separate line items or the L1 bidder games it. A 48-port CX with 4x25G uplinks plus a 3-year Foundation Care Next Business Day typically lands around Rs 4.5 to 7 lakh ($5,400 to $8,400 USD) on tender, and the AMC renewal after year three runs another Rs 85,000 to 1.5 lakh a year.

For BFSI and any MeitY-cleared deployment, the DPDP Act and RBI's data-localisation guidance push you toward on-prem management. CERT-In's six-hour incident reporting window also means your logging has to be tight, so I forward CX syslog and the audit trail to a local SIEM, never a cloud collector outside India. Keep NTP locked to a stratum-1 source inside the country (NPL Delhi feeds a few) so the timestamps survive an audit. When the RBI auditor asks who changed what and when, `show audit-log` plus the SIEM correlation is the answer that ends the meeting.

A real deployment I did with the 6100

Last quarter I racked four 6100 switches into a new BFSI DR site near the BSE colo in Mumbai. The plan was clean: ZTP from a staged NetEdit, VSX on the spine pair, then the access switches join. The plan did not survive contact with the building's power.

Two of the four refused to pull a DHCP-offered firmware image during ZTP. Console showed them sitting at ServiceOS waiting on a TFTP server that the site's transit VLAN was silently dropping, the building's managed PDU had an ACL nobody documented. I lost forty minutes before `show ip dhcp` on the relay told me the offers were going out but the image fetch never completed. We hard-coded the image onto a USB, ran a local `boot system primary` recovery, and brought all four up manually. The lesson stuck: never trust ZTP at a site you do not own the L2 path to. Stage the image locally first, then let automation do the config. Total job, planned for three hours, took five, and the AMC vendor's engineer arrived after we were already done, which is the usual order of things in this country.

Extended FAQs

How do I tell which firmware branch my 6100 should be on?

Run `show version` and match the ArubaOS-CX release against the Aruba CX support matrix. Stay on an LTS train for production, not a feature branch, BFSI change boards rarely approve a non-LTS image without a documented reason.

Does a checkpoint rollback survive a reload?

Named checkpoints persist to flash, so yes, they are there after a reload. But a config rollback for parameters that need a reboot (boot image, some forwarding profiles) still requires the reload to take full effect. Plan the window.

Can I manage the 6100 entirely from the REST API?

Mostly. The CX REST API exposes the same database the CLI edits, so you can read interface state and push config as JSON. I still keep a console session open during major changes, because an API call that loses the management path leaves you with no way back except the console.

What support tier do I actually need in India?

For a production access switch in a BFSI floor, Foundation Care Next Business Day is the floor. For core or spine, push for a 4-hour or 24x7 tier, because the RMA logistics from the nearest HPE depot to a Tier-2 town can otherwise stretch into days.