ZTE switch: MAC table full
By Sai Kiran Pandrala · reviewed by Sai Kiran Pandrala, Editor Last verified: 2026-05-30
| Vendor | ZTE |
|---|---|
| Operating system | ZXR10 / ZXROS |
| Category | IP / Network Issue |
| Skill level | Intermediate to advanced |
| DIY-able? | Yes with CLI access; some scenarios need ZTE Customer Support + RMA. |
What this guide covers
Fix MAC table full on a ZTE switch.
Step-by-step
- Check current MAC table utilisation.
- Identify the offending VLAN or port.
- Enable storm-control on access ports.
- Enable port-security with a hard MAC limit.
- Long-term, refresh to a switch with a larger MAC table.
CLI / commands
show interface brief
show interface gei_1/1/1
show device
When the issue persists
- Open a ZTE Customer Support case with the tech-support bundle.
- Provide the timeline + recent changes.
Frequently asked questions
Will this work on my specific ZXR10 / ZXROS version?
The procedure reflects current ZXR10 / ZXROS behaviour. Older releases may need minor syntax adjustments: use the CLI help (? or tab-completion) to verify.
Should I open a ZTE Customer Support 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 ZTE official documentation?
https://support.zte.com.cn, 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
Related fixes
Related guides worth a look while you sort this one out:
- ZTE firewall: MAC table full
- ZTE router: MAC table full
- ZTE switch: MAC address flapping between ports
- Best ZTE switch for branch office
- Best ZTE switch for enterprise data centre
- Best ZTE switch for retail store
References
- ZTE support portal: https://support.zte.com.cn
- ZTE knowledge base: https://support.zte.com.cn
- ZTE security advisories: https://support.zte.com.cn/support/news/AnnoucementOverviewLatest.aspx
- Open a case: https://support.zte.com.cn
Reference material, not professional advice. Validate against your specific ZXR10 / ZXROS version and test in a non-production environment before applying.
Why this matters for your day-to-day
A ZTE device that's misbehaving costs more than the fix itself: lost productivity, missed calls, security risk, even safety risk in some categories. Treating the symptom quickly with a documented procedure is cheaper than letting it persist. The steps above are written to get you back to working in under an hour where possible, and to flag clearly when escalation is the right call.
Safety + preconditions
Before any work on a ZTE device:
- Unplug from mains for any internal-access procedure.
- Discharge stored energy (capacitors in PSUs, residual battery charge) per manufacturer guidance.
- Use ESD-safe handling for boards and modules. no carpet, no wool sleeves.
- Avoid moisture; never apply liquids near vents or connectors.
- If you smell smoke, see scorch marks, or feel uneven heat, stop and escalate.
Verification checklist
After applying the fix on your ZTE device, confirm:
- The original symptom is no longer reproducible.
- Related features (status LEDs, app sync, paired accessories) still work.
- The device responds to a soft reboot without the fault returning.
- Any error codes that were on display have cleared.
- Documentation (your service log, the brand companion app) reflects the change.
Escalation guide
For a ZTE device, the right escalation depends on impact:
- Cosmetic / minor: log a ticket via the ZTE app or web portal. Response 1-3 business days.
- Mid-impact: phone support. Have your serial number ready.
- Critical (production down, safety issue): in-person dealer / TAC visit. Bring proof of purchase.
- Out of warranty: third-party repair shop with manufacturer-certified technicians.
More frequently asked questions
What if my model isn't exactly the same revision?
Cross-check the model code on the rating plate against the manufacturer support page. Major firmware generations sometimes shift the menu path; the option is usually under a similarly-named section.
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).
Can I roll this back if something breaks?
Yes for software-level changes (firmware rollback, config rollback). Hardware changes are usually one-way. Always back up settings before starting.
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.
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.