As iPhone and iPad Wi-Fi client proliferate in the enterprise, IT need to troubleshoot Wi-Fi link problems. Here"s just how to solve an easy iPhone and also iPad link problems.

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number 1: Verify iOS client"s Wi-Fi radio is ~ above and aircraft Mode is turn off

Step 3: Verify SSID and IP address

Verify her iOS client"s associated service set identifier (SSID) and also IP address. go back to Settings > Wi-Fi on her iPhone or iPad and find your network"s surname -- SSID -- on the "Choose a Network" list.

If your network"s name is no listed, the AP or router might be hiding its SSID. Click "Other" and also enter her network"s name manually. If her network is detailed but walk not appear immediately in ~ the Wi-Fi slider, your iOS Wi-Fi client is not connected. Tap her network"s surname to try to connect. You may be motivated for a password; go into it and also tap "Join." If this fails, walk to action 7. If her network shows up immediately in ~ the Wi-Fi slider, continue.

Note the whenever you"re do the efforts to affix an iOS Wi-Fi customer to any kind of network name, a turn wheel appears to the right of the network"s name. When the wheel disappears, madness the right-facing arrowhead after the network"s surname to view the client"s assigned IP address.

If a connected client"s IP deal with remains empty or the client repeatedly connects but then conveniently disconnects, walk to step 7. If a associated client"s IP attend to is in the exactly subnet, continue.
figure 2: Verify iOS Wi-Fi client"s IP resolve

Step 4: Verify network connection with Ping

Once her iOS Wi-Fi customer has a precious IP address, use "ping" come verify network connectivity.Apple iOS does not encompass a user-accessible "ping" app, but you have the right to verify network connectivity together follows:

If pinging your AP or router succeeds, ping any type of other wired or wireless LAN client that you wish to communicate with. If the ping fails, AP isolation might be enabled or the destination may be utilizing a firewall to block incoming messages. Disable the destination"s firewall, climate ping again. If ping is now successful, climate the firewall friend disabled may also be blocking windows network protocols. Reconfigure the firewall to allow the web traffic you desire to exchange between LAN clients. For example, re-enable thefirewalland allow inbound file and press sharing.
figure 3: Send test web traffic using Safari or an iOS Ping applications

Step 5: check wireless network specific issues

If her iOS Wi-Fi client still cannot connect, get a valid IP address or ping any type of other system associated to the same subnet, it"s time to look for wireless-specific problems. The router and customer must usage compatible 802.11 standards:

newer iPhones and also iPads have combined single-stream 802.11ac network adapters. This iOS Wi-Fi clients can be linked to 802.11ac, dual-band 802.11n, or 802.11a APs or routers -- all of which use channels from the 5 GHz band. Larger iOS Wi-Fi clients the have integrated 802.11bg or single-band 802.11n network adapters deserve to be linked to an 802.11b, 802.11g or 802.11n AP or router -- all of which use channels from the 2.4 GHz band.

To identify which 802.11 standards your wireless network"s AP or router supports, look for the following "Wi-Fi certified" logos, or search for Wi-Fi-certified commodities at theWi-Fi Alliance website. In general, newer APs and also routers are compelled to administer backwards compatibility v older generations of Wi-Fi, but data rate settings must still match.

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See Lisa Phifer"s step-by-step instructionson just how to fix Android Wi-Fi link problems and also wireless link problems.

Once girlfriend have confirmed your AP or router and customer should it is in compatible, debug wireless radio settings, as follows:

usage your AP or router"s admin GUI to see WLAN settings and compare them to her client"s wireless link parameters. If your SSID go not show up in the Client"s available Networks list, enableSSID broadcastson her AP or router. Alternatively, include the SSID to her client"s Wireless Networks list, permitting devices to affix even if the SSID is hidden. Be certain to complement the SSID exactly, including capitalization. 802.11ac, dual-band 802.11n and older 802.11a client can attach to 802.11ac or 802.11n APs or routers using networks in the 5 GHz band. 802.11n and also older 802.11b/g client can likewise connect come 802.11n APs or routers using channels in the 2.4 GHz band. To attach older 802.11a or 802.11b/g clients, enableMixed Modeand slow modulation and coding scheme rates on your AP or router. Because that example, to affix to 802.11b clients, at least the 11 Mbps rate should be enabled. To attach to 802.11g clients, at the very least the 54 Mbps rate need to be supported. Even slow rates are necessary to attach to old client over longer distances.

Step 6: Verify defense settings

If a compatible wireless customer and router can "hear" every other however still cannot attach or exchange traffic, look because that a security setup mismatch.The customer must support the protection mode compelled by the AP or router: Open,WEP, WPA or WPA2. Uneven the WLAN is open (unsecured), both endpoints have to be configured with (or dynamically receive) similar keys to encrypt traffic between them. Compare security settings on your AP/router and also iOS Wi-Fi client and attempt to complement them.

come reconfigure the protection parameters for any type of other network, select the name of the preferred network (or madness "Other" and enter the network surname manually). If your router supplies WEP, set the client"s protection to WEP and copy the router"s an initial WEP crucial into the client"s "Password" field. If your router provides WPA-Personal, collection the client"s defense to WPA and also copy the router"s passphrase into the client"s "Password" field. Remember: Capitalization counts! If her router uses WPA2-Personal, set the client"s security to WPA2 and also copy the router"s passphrase right into the client"s "Password" field; again, capitalization counts! If your router supplies WPA or WPA2-Enterprise, set the client"s security to WPA-Enterprise or WPA2-Enterprise and also continue 802.1X setup in step 7.

If you choose the wrong security type or enter the wrong password, tapping "Join" will cause an error message, not develop a brand-new saved network. However, mismatches can happen when an AP or router to which you"ve previously linked is later reconfigured. In the case, that is often finest to "Forget this Network" and start fresh.

figure 4A: match AP/router and also iOS Wi-Fi customer security setups
figure 4B

Step 7: Verify RADIUS is working

If girlfriend still encounter iphone or iPad connection problems ensure RADIUS is working. WPA and also WPA2-Enterprise log in the iOS Wi-Fi client into the network and deliver encryption keys using one 802.1X-capableRADIUS server.

To check out if RADIUS is working, try the following:

Reconfigure your AP or router and also server with a corresponding RADIUS secret. Reconfigure her RADIUS server to accept requests from her AP or router. Usage ping come verify AP or router-to-RADIUS server network reachability. Watch LAN packet counters to verify RADIUS is being sent, or use a LAN analyzer come debug RADIUS protocol issues.

Step 8: examine 802.1X EAP settings

If RADIUS is working yet your iOS Wi-Fi client"s affix requests room rejected, look because that an 802.1X Extensible Authentication Protocol (EAP) problem. Your customer must support among theEAP typesrequired by your RADIUS server and also must supply a precious login.

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If your RADIUS server calls for PEAP, just collection the client"s security to WPA-Enterprise or WPA2-Enterprise and enter your assigned username and also password. Alternatively, usage an iOS-compatible Mobile device Manager (MDM) to create a construction profile to configure a wireless network link with the proper matching settings. Once using WPA or WPA2-Enterprise, this consists of not just adding a wireless connection, but adding a RADIUS server certificate to the Wi-Fi client.
figure 5: Configuring one iOS Wi-Fi client using an MDM construction Profile

Step 9: check for intermittent network link issues

If her iOS Wi-Fi client still cannot seem to connect to the network, seems very slow every the time, or disconnects frequently, you may be suffering lower-level wireless problems. Finally, come facilitate debugging, friend may additionally want to install a few more free apps. Because that example: