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Connection Problems with MiFi
nikonlarry
Member

Every morning we have to press the power button on the MiFi unit or our computers can not connect. Same is true if we let the unit sit for a while. This is an annoying problem during the day since if we want to bring on a new computer we have to power cycle the unit and that knocks everyone else off. Looking at the logs in the MiFi we see an IP conflict. The Macs etc are expecting to get an IP address from the MiFi. When it fails the Mac says it has a self assigned IP address and can't connect to the Internet.

My limited network knowledge says it looks like the MiFi is trying to give out the same IP as it did the last time the Mac was connected and it is invalid. I wonder if the ARP tables are not getting cleared.

Once we power cycle the unit it works fine for the 2 Macs, WiFi printer and Ceiva Photo frame. 

If you have worked with Verizon it take several calls to get someone to open a ticket. Now they think it is a problem with their tower in our area. I don't think this is the case. I think we need a network specialist to take a look at the MiFi Logs.

 

I am also trying the Sprint hotspot box and it will be interesting to see if that has the same problems.

 

MiFi Log

04/24/11 02:51:40pm> [WiFi] Association 58:55:CA:F8:91:B1
04/24/11 02:51:31pm> [ARP] IP CONFLICT 192.168.1.5 00:26:08:FE:E5:B2
04/24/11 02:51:31pm> 3G Dormant State
04/24/11 02:51:23pm> [ARP] IP CONFLICT 192.168.1.5 00:26:08:FE:E5:B2
04/24/11 02:51:23pm> [ARP] IP CONFLICT 192.168.1.5 00:26:08:FE:E5:B2
04/24/11 02:51:23pm> [ARP] IP CONFLICT 192.168.1.5 00:26:08:FE:E5:B2
04/24/11 02:51:14pm> [ARP] IP CONFLICT 192.168.1.5 00:26:08:FE:E5:B2
04/24/11 02:51:14pm> [ARP] IP CONFLICT 192.168.1.5 00:26:08:FE:E5:B2
04/24/11 02:51:14pm> [ARP] IP CONFLICT 192.168.1.5 00:26:08:FE:E5:B2
04/24/11 02:51:06pm> [ARP] IP CONFLICT 192.168.1.5 00:26:08:FE:E5:B2
04/24/11 02:51:06pm> [ARP] IP CONFLICT 192.168.1.5 00:26:08:FE:E5:B2
04/24/11 02:51:06pm> [ARP] IP CONFLICT 192.168.1.5 00:26:08:FE:E5:B2
04/24/11 02:50:58pm> 3G Out of Dormant State
04/24/11 02:50:47pm> 3G Dormant State
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Re: Connection Problems with MiFi
nikonlarry
Member

Here is the log just after we had to power cycle it after sitting idle for about one hour.

System Log> HTML Version 21.
04/24/11 05:57:03pm> Current Time
04/24/11 05:56:52pm> [DHCP] Assign IP 192.168.1.4 00:12:0E:90:73:DE
04/24/11 05:56:47pm> [WiFi] Association 00:12:0E:90:73:DE
04/24/11 05:56:45pm> [WiFi] DeAuth 00:12:0E:90:73:DE
04/24/11 05:56:45pm> [WiFi] Association 00:12:0E:90:73:DE
04/24/11 05:56:16pm> [WiFi] DeAuth 00:12:0E:90:73:DE
04/24/11 05:56:16pm> [WiFi] DeAuth 00:12:0E:90:73:DE
04/24/11 05:56:16pm> [WiFi] DeAuth 00:12:0E:90:73:DE
04/24/11 05:56:16pm> [WiFi] DeAuth 00:12:0E:90:73:DE
04/24/11 05:56:15pm> [WiFi] Association 00:12:0E:90:73:DE
04/24/11 05:55:53pm> [DHCP] Assign IP 192.168.1.3 58:55:CA:F8:91:B1
04/24/11 05:55:50pm> [WiFi] Association 58:55:CA:F8:91:B1
04/24/11 05:55:44pm> [WiFi] DeAuth 58:55:CA:F8:91:B1
04/24/11 05:55:43pm> [WiFi] Association 58:55:CA:F8:91:B1
04/24/11 05:55:41pm> [ARP] Record IP 192.168.1.6 00:26:08:FE:E5:B2
04/24/11 05:55:41pm> [ARP] Client IP 192.168.1.6 00:26:08:FE:E5:B2
04/24/11 05:55:41pm> [WiFi] Association 00:26:08:FE:E5:B2
04/24/11 05:55:38pm> 3G Connected
04/24/11 05:55:36pm> [DHCP] Assign IP 192.168.1.2 88:87:17:18:98:72
04/24/11 05:55:35pm> [WiFi] Association 88:87:17:18:98:72
04/24/11 05:55:35pm> [WiFi] BSS Start 44:A7:CF:1B:D9:79
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Re: Connection Problems with MiFi
PDCLarry
Novice

Which MiFi device do you have? Are you aware that the default setting is for the device to go to standby after 30 minutes?

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Re: Connection Problems with MiFi
nikonlarry
Member

I have the MiFi2200 D979.

I have the standby setting set to never.

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Re: Connection Problems with MiFi
PDCLarry
Novice

I noticed that it is reporting an IP address conflict; this will cause it to lose a connection. Either you have multiple devices sharing the MiFi with long leases, or there is a network problem upstream from your MiFi. Try going to each device you connect, open the network settings for it and choose "renew lease".  You can also set a shrt lease time in the MiFi console. In Windows you can also open a command window and enter the command "ipconfig /renew

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