Wired Diagnostics

For Chrome

In order to test connectivity and latency, we can instruct your computer to send and receive small amounts of data to one of Google’s servers, and to the equipment at your accommodation (these are called pings). For this we can use an application called Crosh, which is installed on your computer by default.

Performing a Ping Test:

Press Ctrl+Alt+T to open Crosh. The Crosh shell will open in a browser tab.
Line up the windows side by side and enter the following commands, one in each window:

First window:ping -c 100 google.co.uk

Second window:ping -c 100 gw

Press Enter to start the command in each window.
Allow all 100 pings to be completed. You will know when the test is finished as the text will stop scrolling and you will see the words “ping statistics“.
Take a screenshot of the results, without cropping the image so that we can see the time stamp
Send the result to support@ask4.com, mentioning your issue reference number

Your screenshot should look something like below:

To see the wireless environment as your device does, we can use two simple Crosh ‘Terminal’ commands to collate the data we need. These commands help us to check for interference from other wireless networks or for problems with the equipment.

Performing the Network Diagnostic Tests:

Press Ctrl+Alt+T to open Crosh. The Crosh shell will open in a browser tab.
Type the following command:

network_diag – wifi

Press Enter to start the command.

This test will provide you with some data, please copy and paste this into a text document.

Please expand this to see an example

           crosh> network_diag --wifi
           iw dev wlan0 survey dump:
           Survey data from wlan0
            frequency: 2412 MHz
            noise: -92 dBm
            channel active time: 63 ms
            channel busy time: 49 ms
            channel receive time: 45 ms
            channel transmit time: 0 ms
           Survey data from wlan0
            frequency: 2417 MHz
            noise: -93 dBm
            channel active time: 62 ms
            channel busy time: 47 ms
            channel receive time: 41 ms
            channel transmit time: 0 ms
            Survey data from wlan0
           frequency: 2422 MHz
            noise: -92 dBm
            channel active time: 63 ms
            channel busy time: 4 ms
            channel receive time: 0 ms
            channel transmit time: 0 ms

           [truncated]

           Survey data from wlan0
            frequency: 5220 MHz
            noise: -94 dBm
            channel active time: 124 ms
            channel busy time: 0 ms
            channel receive time: 0 ms
            channel transmit time: 0 ms
           Survey data from wlan0
            frequency: 5240 MHz [in use]
            noise: -94 dBm
            channel active time: 15723 ms
            channel busy time: 513 ms
            channel receive time: 185 ms
            channel transmit time: 3 ms
           Survey data from wlan0
            frequency: 5260 MHz
            noise: -94 dBm
            channel active time: 85031 ms
            channel busy time: 84907 ms
            channel receive time: 84907 ms
            channel transmit time: 84907 ms

          [truncated]

          iw dev wlan0 station dump:
          Station 00:11:74:##:##:## (on wlan0)
           inactive time: 5444 ms
           rx bytes: 11797197
           rx packets: 38419
           tx bytes: 1703260
           tx packets: 9779
           tx retries: 14295
           tx failed: 43
           signal: -58 dBm
           signal avg: -60 dBm
           tx bitrate: 24.0 MBit/s
           rx bitrate: 300.0 MBit/s MCS 15 40MHz short GI
           authorized: yes
           authenticated: yes
           preamble: long
           WMM/WME: yes
           MFP: no
           TDLS peer: no
          iw dev wlan0 scan dump:
          BSS 00:11:74:##:##:##(on wlan0) -- associated
           TSF: 61418055#### usec (7d, 02:36:20)
           freq: 5240
           beacon interval: 100 TUs
           capability: ESS Privacy SpectrumMgmt ShortSlotTime (0x0511)
          signal: -60.00 dBm
           last seen: 847370 ms ago
           Information elements from Probe Response frame:
           Supported rates: 24.0* 36.0 48.0 54.0 
           DS Parameter set: channel 48
           Country: US Environment: Indoor/Outdoor
           Channels [36 - 36] @ 24 dBm
           Channels [40 - 40] @ 24 dBm
           Channels [44 - 44] @ 24 dBm
           Channels [48 - 48] @ 24 dBm
           Channels [52 - 52] @ 23 dBm
           Channels [56 - 56] @ 23 dBm
           Channels [60 - 60] @ 23 dBm
           Channels [64 - 64] @ 23 dBm
           Channels [100 - 100] @ 24 dBm
           Channels [104 - 104] @ 24 dBm
           Channels [108 - 108] @ 24 dBm
           Channels [112 - 112] @ 24 dBm
           Channels [116 - 116] @ 24 dBm
           Channels [120 - 120] @ 24 dBm
           Channels [124 - 124] @ 24 dBm
           Channels [128 - 128] @ 24 dBm
           Channels [132 - 132] @ 24 dBm
           Channels [136 - 136] @ 24 dBm
           Channels [140 - 140] @ 24 dBm
           Channels [144 - 144] @ 24 dBm
           Channels [149 - 149] @ 30 dBm
           Channels [153 - 153] @ 30 dBm
           Channels [157 - 157] @ 30 dBm
           Channels [161 - 161] @ 30 dBm
           Channels [165 - 165] @ 30 dBm
           Power constraint: 3 dB
           BSS Load:
           * station count: 2
           * channel utilisation: 4/255
           * available admission capacity: 31250 [*32us]
           HT capabilities:
           Capabilities: 0x9ef
           RX LDPC
           HT20/HT40
           SM Power Save disabled
           RX HT20 SGI
           RX HT40 SGI
           TX STBC
           RX STBC 1-stream
           Max AMSDU length: 7935 bytes
           No DSSS/CCK HT40
           Maximum RX AMPDU length 65535 bytes (exponent: 0x003)
           Minimum RX AMPDU time spacing: 8 usec (0x06)
           HT TX/RX MCS rate indexes supported: 0-15
           HT operation:
           * primary channel: 48
           * secondary channel offset: below
           * STA channel width: any
           * RIFS: 1
           * HT protection: no
           * non-GF present: 1
           * OBSS non-GF present: 0
           * dual beacon: 0
           * dual CTS protection: 0
           * STBC beacon: 0
           * L-SIG TXOP Prot: 0
           * PCO active: 0
           * PCO phase: 0
           VHT capabilities:
           VHT Capabilities (0x338001b2):
           Max MPDU length: 11454
           Supported Channel Width: neither 160 nor 80+80
           RX LDPC
           short GI (80 MHz)
           TX STBC
           RX antenna pattern consistency
           TX antenna pattern consistency
           VHT RX MCS set:
           1 streams: MCS 0-9
           2 streams: MCS 0-9
           3 streams: not supported
           4 streams: not supported
           5 streams: not supported
           6 streams: not supported
           7 streams: not supported
           8 streams: not supported
           VHT RX highest supported: 0 Mbps
           VHT TX MCS set:
           1 streams: MCS 0-9
           2 streams: MCS 0-9
           3 streams: not supported
           4 streams: not supported
           5 streams: not supported
           6 streams: not supported
           7 streams: not supported
           8 streams: not supported
           VHT TX highest supported: 0 Mbps
           VHT operation:
           * channel width: 1 (80 MHz)
           * center freq segment 1: 42
           * center freq segment 2: 0
           * VHT basic MCS set: 0xfffc
           WMM: * Parameter version 1
           * u-APSD
           * BE: CW 15-1023, AIFSN 3
           * BK: CW 15-1023, AIFSN 7
           * VI: CW 7-15, AIFSN 2, TXOP 3008 usec
           * VO: CW 3-7, AIFSN 2, TXOP 1504 usec
           RSN: * Version: 1
           * Group cipher: CCMP
           * Pairwise ciphers: CCMP
           * Authentication suites: IEEE 802.1X FT/IEEE 802.1X
           * Capabilities: PreAuth 1-PTKSA-RC 1-GTKSA-RC MFP-capable (0x0081)
           * 0 PMKIDs
           * Group mgmt cipher suite: AES-128-CMAC
          iw dev wlan0 link:
          Connected to 00:11:74:##:##:## (on wlan0)
           freq: 5240
           RX: 11797197 bytes (38419 packets)
           TX: 1703260 bytes (9779 packets)
           signal: -58 dBm
           tx bitrate: 24.0 MBit/s

           bss flags: short-slot-time
           dtim period: 1
           beacon int: 100

Next, open Crosh again and type the following command:

connectivity show services

Press Enter to start the command.

This test will provide you with some data, please copy and paste this into a text document.

Please expand this to see an example.

          crosh> connectivity show services

         /service/12
          AutoConnect: true
          CheckPortal: auto
          Connectable: true
          ConnectionId: 2069398120
          Country: US
          DNSAutoFallback: false
          Device: /device/wlan0
          EAP.AnonymousIdentity: anonymous
          EAP.CACert: 
          EAP.CACertID: 
          EAP.CACertNSS: 
          EAP.CertID: 
          EAP.ClientCert: 
          EAP.EAP: PEAP
          EAP.Identity: 
          EAP.InnerEAP: auth=MSCHAPV2
          EAP.KeyID: 
          EAP.KeyMgmt: WPA-EAP
          EAP.PIN: 
          EAP.PrivateKey: 
          EAP.RemoteCertification/0: /OU=Domain Control Validated/CN=
          EAP.RemoteCertification/1: /C=US/ST=Arizona/L=Scottsdale/O=GoDaddy.com, Inc./OU=http://certs.godaddy.com/repository//CN=Go Daddy Secure Certificate Authority - G2
          EAP.RemoteCertification/2: /C=US/ST=Arizona/L=Scottsdale/O=GoDaddy.com, Inc./CN=Go Daddy Root Certificate Authority - G2
          EAP.RemoteCertification/3: /C=US/O=The Go Daddy Group, Inc./OU=Go Daddy Class 2 Certification Authority
          EAP.SubjectMatch: 
          EAP.UseProactiveKeyCaching: false
          EAP.UseSystemCAs: true
          Error: Unknown
          ErrorDetails: 
          GUID: 5137BA48-0424-41B0-B5DE-29A427084925
          HTTPProxyPort: 34599
          IPConfig: /ipconfig/wlan0_1_dhcp
          IsActive: true
          LinkMonitorDisable: false
          ManagedCredentials: false
          Mode: managed
          Name: 
          PassphraseRequired: false
          PortalDetectionFailedPhase: 
          PortalDetectionFailedStatus: 
          PreviousError: 
          PreviousErrorSerialNumber: 0
          Priority: 0
          PriorityWithinTechnology: 0
          Profile: /profile/chronos/shill
          ProxyConfig: 
          SaveCredentials: true
          SavedIP.Address: 192.168.1.20
          SavedIP.Gateway: 192.168.1.1
          SavedIP.Mtu: 0
          SavedIP.NameServers: 192.168.1.1
          SavedIP.PeerAddress: 
          SavedIP.Prefixlen: 26
          SavedIPConfig/0/Address: 192.168.1.20
          SavedIPConfig/1/Gateway: 192.168.1.1
          SavedIPConfig/2/Mtu: 0
          SavedIPConfig/3/NameServers/0: 192.168.1.1
          SavedIPConfig/4/PeerAddress: 
          SavedIPConfig/5/Prefixlen: 26
          Security: 802_1x
          SecurityClass: 802_1x
          State: online
          Strength: 35
          Tethering: NotDetected
          Type: wifi
          UIData: 
          Visible: true
          WiFi.AuthMode: 
          WiFi.BSSID: 00:11:74:##:##:##
          WiFi.Frequency: 5240
          WiFi.FrequencyList/0: 2412
          WiFi.FrequencyList/1: 2462
          WiFi.FrequencyList/2: 5240
          WiFi.FrequencyList/3: 5320
          WiFi.HexSSID: ########
          WiFi.HiddenSSID: false
          WiFi.PhyMode: 7
          WiFi.PreferredDevice: 
          WiFi.ProtectedManagementFrameRequired: false
          WiFi.RoamThreshold: 0
          WiFi.VendorInformation/0/OUIList: 00-03-7f

        /service/15
          AutoConnect: false
          CheckPortal: auto
          Connectable: true
          ConnectionId: 0
          Country: US
          DNSAutoFallback: false
          Device: /device/wlan0
          EAP.AnonymousIdentity: 
          EAP.CACert: 
          EAP.CACertID: 
          EAP.CACertNSS: 
          EAP.CertID: 
          EAP.ClientCert: 
          EAP.EAP: 
          EAP.Identity: 
          EAP.InnerEAP: 
          EAP.KeyID: 
          EAP.KeyMgmt: NONE
          EAP.PIN: 
          EAP.PrivateKey: 
          EAP.SubjectMatch: 
          EAP.UseProactiveKeyCaching: false
          EAP.UseSystemCAs: true
          Error: Unknown
          ErrorDetails: 
          GUID: 
          HTTPProxyPort: 0
          IsActive: false
          LinkMonitorDisable: false
          ManagedCredentials: false
          Mode: managed
          Name: 
          PassphraseRequired: false
          PortalDetectionFailedPhase: 
          PortalDetectionFailedStatus: 
          PreviousError: 
          PreviousErrorSerialNumber: 0
          Priority: 0
          PriorityWithinTechnology: 0
          Profile: 
          ProxyConfig: 
          SaveCredentials: true
          Security: none
          SecurityClass: none
          State: idle
          Strength: 44
          Tethering: NotDetected
          Type: wifi
          UIData: 
          Visible: true
          WiFi.AuthMode: 
          WiFi.BSSID: 7c:69:f6:##:##:##
          WiFi.Frequency: 5320
          WiFi.FrequencyList/0: 5240
          WiFi.FrequencyList/1: 5320
          WiFi.HexSSID: ##########
          WiFi.HiddenSSID: false
          WiFi.PhyMode: 7
          WiFi.PreferredDevice: 
          WiFi.ProtectedManagementFrameRequired: false
          WiFi.RoamThreshold: 0
          WiFi.VendorInformation/0/OUIList: 00-10-18

Sending Your Screenshots
The screenshots should be saved to your desktop as .PNG or .JPG files.

These need emailing to the ASK4 Support team so that they can be analysed further.

To do so, please send an email to the following address: support@ask4.com Required information (please put this in the body of the email):
- Your full name
- Your building name, address and block/flat/room number
- Your contact number
- Your ASK4 username
- Your ASK4 issue reference number if you already have one (optional)
Please add the screenshots as attachments to the email. The Support team will reply with an issue reference number.

Please quote this in any future communications with ASK4 about this problem.

Connectivity Issues – Wired – Chrome OS

Wired Diagnostics