Kirk Carver

Q: AT&T MicroCell Rendered Inoperative after ISP Speed/Modem Upgrade.

I had the white AT&T MicroCell for several years: http://www.att.com/att/microcell/downloads/ATT3GMicroCell_UserManual_121610_FINA Lproof.pdf.  It worked fine.  The white MicroCell died about a year ago, and was replaced by a black version http://www.att.com/att/microcell/downloads/ATT_MicroCell_UserManual.pdf (which has only one ethernet port.).  This black one worked ok as well.  In both cases, the MicroCell was connected directly to my Time Capsule Router which is connected to the ISP modem in bridge mode (i.e. the TC is authenticating to the ISP):

 

CenturyLink DSL Line --> ISP Modem ===> Time Capsule ==> MicroCell (and rest of network)

 

Recently my ISP in Durango, CO (CenturyLink) upgraded my service from 1.5Mb/s to 12 Mb/s (hooray), replacing my old modem with a ZyXel C1000Z (for vDSL capability at the higher speeds).  However, this upgrade rendered the MicroCell inoperative (boo).  Everything else in the configuration stayed the same.  After several weeks of troubleshooting with both AT&T and CenturyLink, the only setup that worked for the MicroCell is to take the C1000Z out of bridge mode and allow it to serve (DHCP) the MicroCell an IP.  This configuration, however renders my network unavailable because I can't pass through the Ethernet connection to the TC (the black MicroCell does not have a second ethernet port to setup per http://www.macobserver.com/tmo/article/the_amazing_new_att_microcell_part_ii/ ).    So I've left my network running, and left the poor MicroCell dangling on the LAN, blinking it's cell bars, indicating that it can't talk to the AT&T mother-ship.

 

CenturyLink hasn't been much help.  AT&T was a bit more helpful, noting that they see port 4500 as not getting through.  Why it was getting through before the upgrade, and not after is a bit of a mystery -- CenturyLink swears that they only filter Port 25.

 

Does anyone know of a way to rectify the issue?  I've tried allocating port 4500 on the Time Capsule directly to the MAC / IP address of the MicroCell, but that a) renders iCloud in operative and b) doesn't work.

 

Any help would be appreciated.

 

Kirk

Time Capsule 802.11n (4th Gen)

Posted on Jun 24, 2015 6:20 AM

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Q: AT&T MicroCell Rendered Inoperative after ISP Speed/Modem Upgrade.

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  • by LaPastenague,

    LaPastenague LaPastenague Jun 25, 2015 4:12 PM in response to Kirk Carver
    Level 9 (52,937 points)
    Wireless
    Jun 25, 2015 4:12 PM in response to Kirk Carver
    1. Make a cell phone call using the MicroCell in the Modem (PPOE Router) --> Microcell configuration.  This is to verify that indeed the system works in the configuration.

    Yes, this is essential since you missed it last time.. lights turning on don't necessarily mean working system.. it is really good to put calls in both directions and run them for over 5min.. just to be sure the system.. a. works both ways.. b. doesn't cut out 1min into every call.

     

    1. Run a TraceRoute from a Mac connected in the Modem (transparent) --> TC (PPPOE Router) --> Mac configuration.  I assume that the procedure for running a traceroute is Applications / Utilities / run Network Utility / select Traceroute /  enter domain (which IP address should I use?) / Trace / record results.  Should I perform a traceroute in any other configuration?

    (sorry the auto numbering goes to pot in the cut and paste).

    Yes, you can run traceroute from network utility or just open a terminal.. and type it..

     

    Traceroute to your ISP or google public DNS 8.8.8.8

     

    eg.

    minimeray-2:~ Ray$ traceroute www.aanet.com.au

    traceroute to aanet.com.au (203.24.100.73), 64 hops max, 52 byte packets

    1  router.asus.com (192.168.2.254)  1.085 ms  0.750 ms  0.649 ms

    2  adsl02.mel01.eftel.com (203.123.68.33)  52.713 ms  45.761 ms  78.874 ms

    3  tge0-0-0-303.core0.mel.dft.com.au (203.123.69.105)  58.942 ms  78.263 ms  60.487 ms

    4  ge0-1-99.core0.per01.eftel.com (202.61.186.149)  96.911 ms  120.465 ms  104.260 ms

    5  *^C

     

    The important info is how many hops does it take to get out to the public routes.

     

    So hop1 is my router.. and hop2 is already the ISP equipment with public address.. that means I have only a single NAT.

    And there is no other private IP in the list.. now for whatever reason.. traceroute to my own ISP is now very poor.. so it goes to pot at hop 5.. that is irrelevant.. and the ISP has simply set routers to not respond.

     

    From inside the Network utility it looks like this.

     

    Screen Shot 2015-06-26 at 9.02.10 AM.png

    I post that info so you can see that none of this is a security issue.. people do not get your own IP from this.. And the IP of the ISP equipment is publicly accessible.

     

    1. Reset the TC to factory defaults.  This will be a bit of work resetting the assigned IP's and port forwarding, but not to bad, and worth trying as a last step.

    Because this change to routing setup can mess things up it is always worthwhile. The old values are retained and a full wipe is really the only way to ensure the problem/s are not just configuration errors.

     

    Take screenshots of the setup and export the configuration before you reset.. do not use the configuration.. but you can open it.. standard XML file you can open as txt file and copy and paste the MAC addresses directly.. this makes it pretty straight forward..

     

    The biggest problem with setting everything in the ZyXel is that I will lose the seemless extended wireless network I have setup among the TC and associated Airport Express. 

    No, it should work fine with the TC in bridge to the Zyxel.. and create a wireless network.. then the express can extend that wireless.. no major change is necessary here.. you could even turn off the Zyxel wireless.. and just use the apple.. although IMHO using both makes no difference.. they will sort themselves out and it is useful since the wireless on the Zyxel gives you direct access into its interface if something goes wrong.. in general you would still just use the airport wireless though.

     

    There is a bit more complicated setup using Static IP in the TC as alternative.. but again it is better to keep this simple.. If you run into trouble it can be considered.

  • by Kirk Carver,

    Kirk Carver Kirk Carver Jun 25, 2015 8:19 PM in response to LaPastenague
    Level 1 (9 points)
    iPad
    Jun 25, 2015 8:19 PM in response to LaPastenague

    LaPastenague

     

    A quick update.

     

    I have BackToMac and Configure over WAN set on the remote (Colorado, by the way) Time Capsule that we are discussing,  As I mentioned earlier, my remote Mac Mini (which  should be setup with BackToMac) has disappeared from any remote Finder sidebar.  I don't know why/how it's not there... but it isn't. The Colorado Time Capsule, however, appeared tonight in the Finder shared section.  So I tried to access it, and was sucessful.  I was able to take some Grab images of each of the tabs.  Would any be useful to interrogate?

     

    I also exported the .config configuration file from the Time Capsule, if we can glean anything from it,

     

    Kirk

  • by LaPastenague,Helpful

    LaPastenague LaPastenague Jun 26, 2015 12:12 AM in response to Kirk Carver
    Level 9 (52,937 points)
    Wireless
    Jun 26, 2015 12:12 AM in response to Kirk Carver
    I also exported the .config configuration file from the Time Capsule, if we can glean anything from it,

    Reading XML is a not exactly easy I can compare it to a standard config file.

     

    Send it to me.. my email is available in the profile.

     

    The screenshots of the tabs can also give me some info so pass those  as well.

     

    The way it goes in and out and in operation again speaks volumes of some real issues apple has with the BTMM system.

     

    This can be due to rapidly rotating dynamic IP and BTMM is not keeping up with the changes.

  • by Kirk Carver,

    Kirk Carver Kirk Carver Jun 28, 2015 12:12 PM in response to LaPastenague
    Level 1 (9 points)
    iPad
    Jun 28, 2015 12:12 PM in response to LaPastenague

    LaPastenague

     

    I've forwarded the information.  Thanks again!

     

    Kirk

  • by LaPastenague,

    LaPastenague LaPastenague Jun 28, 2015 3:45 PM in response to Kirk Carver
    Level 9 (52,937 points)
    Wireless
    Jun 28, 2015 3:45 PM in response to Kirk Carver

    I have the info and have emailed back..

  • by Kirk Carver,

    Kirk Carver Kirk Carver Jun 28, 2015 5:01 PM in response to LaPastenague
    Level 1 (9 points)
    iPad
    Jun 28, 2015 5:01 PM in response to LaPastenague

    Ray


    Thanks.  I replied to your email.

     

    Kirk

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