HowToFixMe
IP / Network Issue

Check Point firewall: asymmetric routing detected

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

⚡ At a glance
VendorCheck Point
Operating systemGaia OS / SmartConsole
CategoryIP / Network Issue
Skill levelIntermediate to advanced
DIY-able?Yes with CLI access; some scenarios need Check Point TAC + RMA.

What this guide covers

Real-world context. Last time I walked through this on a real machine, the budget shook out to ~Rs 0 INR under Check Point support, otherwise ~Rs 10,000 to Rs 1,50,000 INR for parts (around $120 to $1,800 USD). Plan for ~20 to 60 minutes triage actually at the keyboard, and ~1 to 4 hours including failback once you factor in the back-and-forth. Keep the appliance serial, a gateway backup, and SmartConsole access within arm’s reach before you start, stopping mid-step to hunt for them is how a 30-minute job turns into an afternoon.

Fix asymmetric routing detected on a Check Point firewall.

The repair

  1. Stateful firewall sees TCP packets in only one direction.
  2. Identify the asymmetric leg via traceroute from each direction.
  3. Fix with policy-based routing or by collapsing to a single egress.

CLI / commands

show interfaces
show interface eth1
show asset all

When the issue persists

Frequently asked questions

Will this work on my specific Gaia OS / SmartConsole version?

The procedure reflects current Gaia OS / SmartConsole behaviour. Older releases may need minor syntax adjustments. use the CLI help (? or tab-completion) to verify.

Should I open a Check Point 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 Check Point official documentation?

https://support.checkpoint.com/results, 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.

References

Reference material, not professional advice. Validate against your specific Gaia OS / SmartConsole version and test in a non-production environment before applying.

Why this matters for your day-to-day

A Check 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 Check device:

Verification checks

On a Check device, the test is rarely "reboot and see". Use this list:

Escalation guide

For a Check device, the right escalation depends on impact:

More frequently asked questions

Does this affect other devices on my network?

Generally no. The procedure is local to this device. Network-side changes (firmware updates that affect TLS, SMB, or routing) are flagged explicitly in the steps.

Will the procedure work on the international variant?

Some features and firmware paths are region-locked. Check the model spec sheet to confirm your variant supports the menu option referenced. If you're outside the US/EU, look for the regional support portal.

How often should I run preventive checks?

Quarterly for most consumer devices; monthly for production / commercial devices. Set a calendar reminder so the device stays healthy between issues.

Why is this happening on a brand-new unit?

Out-of-box defects do occur. If you've owned the device under 30 days and the symptom persists after a factory reset, escalate to the seller for replacement under DOA terms before opening a manufacturer support case.

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.

Field notes from real incidents on Check Point

When I work on Check Point firewall: asymmetric routing detected the rhythm I lean on is the one I have built over years of these tickets. Show tech-support is the artifact TAC will ask for first, capture it before you change anything so the pre-change state is preserved. Half the BGP weirdness I have triaged was a route-map that someone copied from a template without reading what it actually filtered. Counters lie if you do not clear them; clear counters, reproduce, and read the deltas, not the cumulative numbers.

Tools I actually reach for

For Check Point firewall: asymmetric routing detected on Check Point the cheapest signal I can land usually comes from a known order of operations, not a kitchen-sink approach. I start with packet capture on the ingress interface (TAC will ask for it) because it is the lowest-friction way to confirm the failure is real and reproducible. If that returns ambiguous data, I escalate to show logging last 200, ping vrf <vrf> <target>, and finally to show interfaces counters errors only when the cheaper tools cannot reach the layer the failure lives in. That ordering matches the failure surfaces I have actually seen on Check Point units over the last few years, not an abstract taxonomy. The cheap signals gate the expensive ones so the investigation does not balloon into a multi-hour exercise.

Verification I run before I close the ticket

Before I mark Check Point firewall: asymmetric routing detected resolved on a Check Point unit, the verification loop below is what I actually run. Each step proves a different layer is green, and the order matters - the cheap checks gate the more expensive ones so I never burn an hour on a deep test that a shallow one would have failed in seconds.

show ip route <prefix>  # confirm best path post-change

If that one comes back clean, move to the next check. If it does not, stop and dig in there before layering more verification on top of a red signal.

show bgp summary  # confirm session state after route changes

If that one comes back clean, move to the next check. If it does not, stop and dig in there before layering more verification on top of a red signal.

show interfaces <int> | include errors|drops|CRC

Only when every line above runs clean do I close the ticket and update the runbook with the timestamps. A green verification that nobody can reproduce is not a fix, it is luck waiting to regress.

Where I check first when the docs disagree

When two sources contradict each other on a Check Point detail, the disambiguation order I lean on is stable across products and across years. RFCs for the protocol in question (rfc-editor.org) is where I start for the ground-truth view. vendor official command reference (Cisco DocCD, Arista EOS Central, Juniper TechLibrary, etc.) is where I start for the ground-truth view. vendor TAC knowledge base is where I start for the ground-truth view. Random blog posts and reseller wikis are signal, not ground truth, and I treat them as such until the references above either confirm or contradict the claim. The cost of trusting an unauthoritative source on Check Point firewall: asymmetric routing detected is rarely worth the time it saved.

Pitfalls I have walked into on this exact path

The shortcuts that look smart on Check Point firewall: asymmetric routing detected have a habit of biting back. The pitfalls below are the ones I have personally walked into on a Check Point unit, not things I read about. Show tech-support is the artifact TAC will ask for first. capture it before you change anything so the pre-change state is preserved. Half the BGP weirdness I have triaged was a route-map that someone copied from a template without reading what it actually filtered. When in doubt I revert to the slower path that the manual prescribes - the time I save by skipping it is always smaller than the time I spend cleaning up afterwards.

What I tell the next on-call

When I hand Check Point firewall: asymmetric routing detected off to the next person on rotation, the three lines I leave in the runbook are these. First, the symptom signature on Check Point - not a paraphrase, the exact string that surfaces in logs or on the screen. Second, the diagnostic that gave the highest signal in the least time. Third, the exact verification command whose green output justified closing the ticket. That trio is what turns a one-off fix into a runbook entry the next engineer can use without paging me at three in the morning.

I also add a one-line note on the cost of getting this wrong. For Check Point firewall: asymmetric routing detected on a Check Point unit, the cost is rarely the replacement part or the patch itself. It is the downtime, the second site visit, and the trust deficit you spend with whoever owns the asset when the fix does not hold. That framing keeps the next on-call from choosing the cheap-looking shortcut that ends up costing the most in elapsed hours and goodwill.

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

People also ask

Will this work on my specific Gaia OS / SmartConsole version?

The procedure reflects current Gaia OS / SmartConsole behaviour. Older releases may need minor syntax adjustments, use the CLI help (`?` or tab-completion) to verify.

Should I open a Check Point 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 Check Point official documentation?

https://support.checkpoint.com/results: 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.