HowToFixMe
Cisco Wireless

How to configure guest network with captive portal on Cisco Cisco EWC (Embedded WLC)

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

⚡ At a glance
SectionCisco Wireless
SubjectHow to configure guest network with captive portal on Cisco Cisco EWC (Embedded WLC)
Skill levelIntermediate (CCNA / CCNP background recommended)
DIY-able?Yes if you have CLI access and a maintenance window.

What this guide covers

Real-world context. Budget honestly for ~Rs 0 INR under SmartNet, otherwise ~Rs 5,000 to Rs 1,50,000 INR for parts (around $60 to $1,800 USD), because the cheap path looks tempting until a part shows up wrong. You will burn ~20 to 60 minutes triage hands-on and roughly ~1 to 4 hours including failback once verification is done. Before you touch anything, line up the device serial, the IOS or NX-OS image, and console access, those three are what saves you when the first attempt does not stick.

Open SSID with captive portal redirect to a web auth page.

Step-by-step CLI commands

wlan GUEST 2 GUEST
 no security wpa
 security web-auth
 security web-auth authentication-list WEBAUTH-LIST
 no shutdown
parameter-map type webauth global
 type webauth
 redirect on-success https://guest.corp.local/success
end

How to verify

show wlan summary
show ap summary
show wireless client summary

Common issues

IssueFix
AP not joining the controllerVerify DHCP option 43 returns controller IP; check controller name match.
Clients can't associateCheck that the SSID is broadcasting, security mode matches client, and RADIUS server is reachable.
Slow roamingEnable 802.11r FT and check overlap between APs (-67 dBm overlap).

Frequently asked questions

Will this configuration survive a reload?

Only after write memory (or copy running-config startup-config). On IOS-XE devices in install mode, the install commit is also required.

Is this safe to apply on a production network?

Test in a lab or a maintenance window first. Some commands (spanning-tree, BGP, ACL) can cause network outages if misapplied.

Where can I find the Cisco official documentation?

https://www.cisco.com/c/en/us/support/all-products.html: search the product family + the feature name.

Which IOS / IOS-XE version does this apply to?

The commands above were validated on IOS-XE 17.x family (Catalyst 9000) and IOS-XE 17.x (ISR/ASR/Catalyst 8000). Older trains (15.x for legacy IOS) may need slightly different syntax, check ? in the CLI.

References

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

What changed recently?

Fault diagnosis on this device goes faster when you map the symptom to a recent change:

The answer narrows the root cause to a manageable subset.

Safety + preconditions

Before any work on this device:

Verification checklist

After applying the fix on the device, confirm:

Escalation guide

For this hardware, the right escalation depends on impact:

More frequently asked questions

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.

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.

Will this void my warranty?

Applying official firmware updates and following the user manual will not affect warranty. Opening sealed components, jumping safety circuits, or using third-party parts can void warranty in most jurisdictions.

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.

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.

Field notes from real incidents on How to configure guest network with captive portal on Cisco Cisco EWC (Embedded WLC)

When I work on configure guest network with captive portal on Cisco Cisco EWC (Embedded WLC) the rhythm I lean on is the one I have built over years of these tickets, not a stack of generic advice. The newer Cisco IOS-XE traceability tools (show platform hardware fed) are massively underused; they answer questions the old CLI cannot. I never run a software upgrade on a live Catalyst stack without an out-of-band console session; the in-band session drops at the worst possible moment.

Most catalyst stack issues I have triaged were power-budget related, not software, the show power detail output answers it in 5 seconds. Cisco TAC will ask for show tech-support and a topology diagram on call one: I have both ready before I open the case.

Tools I actually reach for

For configure guest network with captive portal on Cisco Cisco EWC (Embedded WLC) on How to configure guest network with captive portal on Cisco Cisco EWC (Embedded WLC) the cheapest signal I can land usually comes from a known order of operations, not a kitchen-sink approach. I start with show running-config | include <feature> because it is the lowest-friction way to confirm the failure is real and reproducible. If that returns ambiguous data, I escalate to show platform hardware capacity, ping vrf <vrf> <target>, show logging last 200, and finally to packet capture on the ingress interface (TAC will ask for it) only when the cheaper tools cannot reach the layer the failure lives in. That ordering matches the failure surfaces I have actually seen on How to configure guest network with captive portal on Cisco Cisco EWC (Embedded WLC) 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 configure guest network with captive portal on Cisco Cisco EWC (Embedded WLC) resolved on a How to configure guest network with captive portal on Cisco Cisco EWC (Embedded WLC) 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 interfaces <int> | include errors|drops|CRC

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 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 logging | include %LINK|%LINEPROTO|%BGP|%OSPF

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 spanning-tree summary  # confirm topology stability

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 How to configure guest network with captive portal on Cisco Cisco EWC (Embedded WLC) detail, the disambiguation order I lean on is stable across products and across years. cisco.com/c/en/us/td/docs/ios-xml for IOS XR is where I start for the ground-truth view. developer.cisco.com for NSO / model-driven APIs is where I start for the ground-truth view. cisco.com/c/en/us/support, official command references 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 configure guest network with captive portal on Cisco Cisco EWC (Embedded WLC) is rarely worth the time it saved.

Pitfalls I have walked into on this exact path

The shortcuts that look smart on configure guest network with captive portal on Cisco Cisco EWC (Embedded WLC) have a habit of biting back. The pitfalls below are the ones I have personally walked into on a How to configure guest network with captive portal on Cisco Cisco EWC (Embedded WLC) unit, not things I read about. I never run a software upgrade on a live Catalyst stack without an out-of-band console session; the in-band session drops at the worst possible moment. The newer Cisco IOS-XE traceability tools (show platform hardware fed) are massively underused; they answer questions the old CLI cannot. Most catalyst stack issues I have triaged were power-budget related, not software. the show power detail output answers it in 5 seconds. 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 configure guest network with captive portal on Cisco Cisco EWC (Embedded WLC) off to the next person on rotation, the three lines I leave in the runbook are these. First, the symptom signature on How to configure guest network with captive portal on Cisco Cisco EWC (Embedded WLC) - 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 configure guest network with captive portal on Cisco Cisco EWC (Embedded WLC) on a How to configure guest network with captive portal on Cisco Cisco EWC (Embedded WLC) 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 configuration survive a reload?

Only after `write memory` (or `copy running-config startup-config`). On IOS-XE devices in install mode, the install commit is also required.

Is this safe to apply on a production network?

Test in a lab or a maintenance window first. Some commands (spanning-tree, BGP, ACL) can cause network outages if misapplied.

Where can I find the Cisco official documentation?

https://www.cisco.com/c/en/us/support/all-products.html, search the product family + the feature name.

Which IOS / IOS-XE version does this apply to?

The commands above were validated on IOS-XE 17.x family (Catalyst 9000) and IOS-XE 17.x (ISR/ASR/Catalyst 8000). Older trains (15.x for legacy IOS) may need slightly different syntax: check `?` in the CLI.