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Re: ESP8266 and frequent reconnects fail with latest AP firmware MR 25.9

by in Wireless
‎Mar 29 2018 9:42 AM
‎Mar 29 2018 9:42 AM
My AP is a MR32. Here are the settings:   Pre-shared key: WPA2  WPA Encryption mode: WPA2 only 802.11r: Disabled 802.11w: Disabled Splash: None Client IP Assignment: Bridge Mode VLAN tagging: No Bonjour forwarding: Disabled Dual band: 2.4 and 5 Ghz Minimum bitrate: 1Mbps (Full compatibility with legacy devices (pre-1999))   I also noticed that with devices using ESP8266 Core 2.3 that this still doesn't work, but re-flashing with  code compiled with Core 2.4 the problem is solved.   As I'm writing this, I found a device still running with Core 2.3 and it in fact does not connect using the 25.9 firmware after you reset it multiple times.   So it seems the problem is in fact two folded. With WPA2 only we still get this:   ESPCore 2.3               AP firmware 24.11    OK AP firmware 25.9      Not OK ESPCore 2.4 AP firmware 24.11   OK AP firmware 25.9     OK Could you please try with your Arduino code to upgrade to Core 2.4? I've found it's generally safe and includes the WPA CRACK fix. Some libraries might need to be updated.   Very rarely, after a reset, the ESP8266 does not connect, but this already happened before and on other networks, so I'm not sure if this is related. My code stop/restarts connections after a few minutes if not connected, so usually I don't see it.   This could probably need more extensive testing, but it's working with me.   I'll inform Cisco about the Core 2.3 and 25.9     ... View more

Re: ESP8266 and frequent reconnects fail with latest AP firmware MR 25.9

by in Wireless
‎Mar 27 2018 12:54 AM
1 Kudo
‎Mar 27 2018 12:54 AM
1 Kudo
Just a quick follow-up on this issue. I've eventually discovered that having "WPA encryption mode" set to "WPA1 and WPA2" was causing this issue. Setting to "WPA2 only" the ESP8266 devices connect without problem. I'm not sure if TAC will follow this up. If they will, I'll continue to update this post. For me this is now solved. ... View more

Re: ESP8266 and frequent reconnects fail with latest AP firmware MR 25.9

by in Wireless
‎Mar 7 2018 10:57 PM
‎Mar 7 2018 10:57 PM
TAC says that the ESP rejects the IP address give by the Access Point   ESP8266 rejects DHCP offerI've tried with other access points, but still using Meraki's DHCP given by the gateway. It works. So, I'm sure the problem is in the handling of the DHCP relay by the Access Point. Lets hope TAC finds what's causing this soon. ... View more

Re: ESP8266 and frequent reconnects fail with latest AP firmware MR 25.9

by in Wireless
‎Mar 1 2018 1:36 AM
1 Kudo
‎Mar 1 2018 1:36 AM
1 Kudo
Yes, case open. We have found out so far that it's a DHCP related issue. With fixed IP address, the ESP works great with both versions. Waiting on TAC to analyse the logs. Will keep posted. ... View more

Re: ESP8266 and frequent reconnects fail with latest AP firmware MR 25.9

by in Wireless
‎Feb 20 2018 3:03 PM
‎Feb 20 2018 3:03 PM
Thanks, I thought firmware downgrade for this version was no longer permited. I've rolled back and I'll open a support ticket. ... View more

ESP8266 and frequent reconnects fail with latest AP firmware MR 25.9

by in Wireless
‎Feb 20 2018 2:38 PM
‎Feb 20 2018 2:38 PM
Since the "forced" upgrade to MR 25.9 firmware, my ESP8266 devices fail to reconnect to Meraki if they disconnect and connect frequently.  These devices can enter deep sleep and connect again every few minutes to update their data. If those periods are smaller than about 10 min, they won't connect to Meraki networks. Before MR 25.9 was released, I tried the beta firmware and noticed this problem. Believing it to be a bug to be solved, I reverted back to the previous version, and didn't think more about it, as the devices worked well before. I now notice that if I'm developing with the ESP and I have multiple restarts, this device won't connect again to Meraki until a few minutes later. On the event log for these devices I only see messages like this: Access point SSID Client Event type Details Time (CET) Feb 20 23:22:48 ap-eglisau calvin ESP_21BB73 802.11 disassociation client has left AP Feb 20 23:22:39 ap-eglisau calvin ESP_21BB73 WPA authentication   Feb 20 23:22:39 ap-eglisau calvin ESP_21BB73 802.11 association channel: 1, rssi: 33 Feb 20 23:22:38 ap-eglisau calvin ESP_21BB73 WPA authentication   Feb 20 23:22:38 ap-eglisau calvin ESP_21BB73 802.11 association channel: 1, rssi: 34 Feb 20 23:22:21 ap-eglisau calvin ESP_21BB73 WPA authentication   Feb 20 23:22:21 ap-eglisau calvin ESP_21BB73 WPA deauthentication radio: 0, vap: 2, client_mac: 60:01:94:21:BB:73  more » Feb 20 23:22:21 ap-eglisau calvin ESP_21BB73 802.11 association channel: 1, rssi: 30 Feb 20 23:22:17 ap-eglisau calvin ESP_21BB73 802.11 disassociation client has left AP Feb 20 23:22:02 ap-eglisau calvin ESP_21BB73 WPA authentication   Anybody with this issue too?       ... View more
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