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TheCodeMan
EVDO Fledgling
Joined: 26 Feb 2008
Posts: 12
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 Posted: Fri Apr 04, 2008 9:23 pm Post subject: MBR1000 Taking Two IP Addresses |
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This is really odd. For some reason, today my MBR1000 started taking two ip addresses. I have the IP address configured to be 192.168.1.1. It is now using that one as well as 192.168.1.2. I have made no changes at all. I have reset the router. I have reloaded from the orginal saved config. I'm not sure what else to try. I have confirmed that it is the router that is using both addresses. I set a constant ping to both addresses, power off and power on the router. When the router is off, the pings time out, when it comes back on, they both start at precisely the same moment. I have verified that local DNS as well as DHCP is configured and working correctly. I am using a Win2K3 Server for both. The MBR1000 is used only for wireless and EVDO. I have disabled wireless on the MBR1000 and it made no difference. I just replaced my KR1 with the MBR1000. The first day was complete happiness. Now, I'm starting to lose the warm fuzzy as I have no idea where to look for the cause of this problem.  |
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firedude
EVDO Junkie
Joined: 26 Mar 2007
Posts: 435
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| Posted: Fri Apr 04, 2008 9:27 pm Post subject: |
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| Just where is it you are seeing the 192.168.1.2. I ?? |
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TheCodeMan
EVDO Fledgling
Joined: 26 Feb 2008
Posts: 12
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| Posted: Fri Apr 04, 2008 9:44 pm Post subject: |
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| I noticed one of my main static IP media servers (192.168.1.2, 3, and 4) fell offline. Obviously the .2 server. I looked at DNS locally and DHCP. All entries are correct. I went to the media server and checked the IP. It indicated there was an IP address conflict. I set a static ping to both my default gateway .1 and the problem address .2. When I disconnected the power to the MBR1000, both pings stopped. When I reconnected, they both started at the exact same moment. That confirms the MBR1000 is taking two addresses. How and where , I have no idea. I have adjusted every setting I can think of. Short of resetting to default and reconfiguring from scratch, I'm not sure what to do. |
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eking64
EVDO Fledgling
Joined: 01 Dec 2007
Posts: 25
Location: Oxford, NC
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| Posted: Sat Apr 05, 2008 3:02 am Post subject: |
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| Do you have anything plugged into the WAN port of the MBR 1000? |
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Jim_in_VA
EVDO Junkie
Joined: 09 Apr 2007
Posts: 559
Location: On the Chesapeake Bay, Virginia
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| Posted: Sat Apr 05, 2008 6:01 am Post subject: |
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Wondering if that has something to do with the fail-over feature so it can make a quick connection to the backup device.
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firedude
EVDO Junkie
Joined: 26 Mar 2007
Posts: 435
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| Posted: Sat Apr 05, 2008 6:23 am Post subject: |
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| Jim_in_VA wrote: | | Wondering if that has something to do with the fail-over feature so it can make a quick connection to the backup device. |
Kind of wondering the same thing as well as what firmware version he is running as well? |
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Victor
Site Admin
Joined: 14 Jul 2006
Posts: 81
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| Posted: Sat Apr 05, 2008 9:27 am Post subject: Explanation of 2 IP's |
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Cradlepoint routers are slightly different in their architecture when comparing to a KR1 or similar router.
You see, even though the MBR1000 has a default IP of 192.168.0.1 does not mean that that gateway IP is where all the magic is occuring. The cradlePoint family of routers have 2 IP's. The purpose of the second IP is to perform as a web server that provides the user the Admin configuration pages.
If you are going to be using static IP's in your configuration, simply DO NOT use the 192.168.0.2 in any of your machines network configurations. You will most definately get an IP address conflict each and every time;-)
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TheCodeMan
EVDO Fledgling
Joined: 26 Feb 2008
Posts: 12
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| Posted: Sat Apr 05, 2008 9:29 am Post subject: |
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I am running the latest firmware, 1.1.1. I have nothing plugged into the WAN port and I only have one internet connection on the router, the EVDO card, so I don't see how failover could play into this. I fixed the problem, sort of. I basically reassigned another static IP address to the server in question. The router is still tying up the two IP addresses for some reason but at least I can get to my movies and music now. I just don't know if it's worth the trouble resetting the router to its default settings to see if that fixes it. Now, I will really be upset when it starts to take up a third IP address.
Any other suggestions short of a reset to default are most appreciated. |
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firedude
EVDO Junkie
Joined: 26 Mar 2007
Posts: 435
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| Posted: Sat Apr 05, 2008 9:37 am Post subject: |
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| I'm stumped, maybe contact support at the 3G Store or where you bought the router if it was not hem and see if they can help otherwise I'd start over and reset the router to factory and if it keeps doing it then maybe return it? As a shot in the dark though if you know of anyone with a different device compatible with your router, try their device and see what happens. |
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Jim_in_VA
EVDO Junkie
Joined: 09 Apr 2007
Posts: 559
Location: On the Chesapeake Bay, Virginia
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| Posted: Sat Apr 05, 2008 9:39 am Post subject: |
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Looks to me like Victor explained it
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firedude
EVDO Junkie
Joined: 26 Mar 2007
Posts: 435
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| Posted: Sat Apr 05, 2008 9:43 am Post subject: |
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| Ya know Jim it may pay off for me to read the post above the last one lol! sheesh! where's my coffee!? |
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Jim_in_VA
EVDO Junkie
Joined: 09 Apr 2007
Posts: 559
Location: On the Chesapeake Bay, Virginia
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| Posted: Sat Apr 05, 2008 9:46 am Post subject: |
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lol..I know the feeling 
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TheCodeMan
EVDO Fledgling
Joined: 26 Feb 2008
Posts: 12
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| Posted: Sat Apr 05, 2008 9:55 am Post subject: |
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So in this instance, Cradlepoint is different than every other router vendor on the market? I did not see any documentation that reflected this. Don't get me wrong, I love the Cradlepoint as it is much more reliable than the KR1. Odd that this was not a problem for about one week. I would and still do access the built in web server at 192.168.1.1. If I http to 192.168.1.2, it redirects me to .1.
Note I did change my segment from 192.168.0.x to 192.168.1.x. |
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JoeCHecht
EVDO Junkie
Joined: 05 Jan 2008
Posts: 345
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| Posted: Sun Apr 06, 2008 11:50 am Post subject: Re: Explanation of 2 IP's |
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| Victor wrote: | Cradlepoint routers are slightly different in their architecture when comparing to a KR1 or similar router.
You see, even though the MBR1000 has a default IP of 192.168.0.1 does not mean that that gateway IP is where all the magic is occuring. The cradlePoint family of routers have 2 IP's. The purpose of the second IP is to perform as a web server that provides the user the Admin configuration pages.
If you are going to be using static IP's in your configuration, simply DO NOT use the 192.168.0.2 in any of your machines network configurations. You will most definately get an IP address conflict each and every time;-) |
I noticed this all CradlePoint routers (CTR-350, PHS-300, and the MBR-1000).
Whatever address you give the router, you better leave the next IP address open, cause it will take that one too!
IMHO, this is one of the most irritating, UNDOCUMENTED issues that there is with the CradlePoint Routers, and has been the source of a lot of very bad words flying around as we had to reconfigure all sorts of equipment and servers to deal with the issue.
I know of no other router product that is programmed to do it this way, even those that are based on the same boards. I would bet a steak dinner on the theory that this is a bit of evil CradlePoint magic, programmed that way just to overcome some programming issue they cant yet deal with, and push more product out the door faster.
It seems that most every other router in the world can do the admin funcitons just fine without the need of a second static IP.
So yes Victor, you are correct. If you plug a CradlePoint router into your LAN, it will steal the next IP address without telling you, and will wreck your LAN if you have anything else using that IP slot.
I am glad this got brought up. I had forgotten to add that mess to my timesheet of lost production caused by CradlePoint products.
I do love them. As mobile products, they work great, but installed into a LAN setup where things need to reliably work without reboots, we found the MBR-1000 (tried two of them) to be unreliable for this purpose.
Speaking of reliability, I noticed that you guys posted that the 3G store recently lost your internet provider for awhile. I just gotta ask (since no-one else did), why do you guys not have some MBR-1000's plugged in for a failover situation?
You got plenty of routers, you have plenty of mobile broadband devices (and presumably plenty of accounts you use to test with), yet it appears you are not using the same technology you sell to us to overcome the same situation. I assume you run your own server, (since it appears you do not use a hosting company that has failover to another data center).
Given this, at minimum, your server could put up a page that said something like "we are experiencing a failover, and we are currently using mobile broadband to serve up our webpages, so please excuse the slowness".
At best, your server could put up a page that said something like "we are experiencing a failover, and we are currently using mobile broadband to serve up our webpages, so please notice how well this works! We are using the MBR-1000 - You can buy one here!".
So, why does 3GStore not use the MBR1000 with failover?
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Michael
Site Admin
Joined: 13 Jan 2005
Posts: 5132
Location: Cary, IL
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| Posted: Sun Apr 06, 2008 12:05 pm Post subject: Re: Explanation of 2 IP's |
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| JoeCHecht wrote: | | So, why does 3GStore not use the MBR1000 with failover? |
Three simple reasons.
1) Our server is co-located at an ISP. Pretty hard to do at the ISP.
2) Even if you have a low "time to live" on DNS, it can take some DNS servers 24 hours to "see" the new IP Address and then the same amount of time to update - so even if we were "back up", they would still see the wrong page.
3) And this is the biggest one. Sprint blocks port 80.
Completely off topic - but we are implementing something so that would never happen again. Has nothing to do with CradlePoint routers, but adding a 2nd or 3rd live mirrored server in different locations across the country.
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