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  1. RobKorn

    SS3-4400 sending flood of alert emails, "authentication failure"

    I get similiar messages but they are concerning the "snmp trap authentication" not radius/.x stuff. If you are using a network manager (like Network Director) then you have a trap reciever IP address setup and an SNMP read and write password(community string). Check the switch: System...
  2. RobKorn

    3com WX4400 tips and tricks

    Anyone out there running a WX4400 mobility domain? Wireless switch manager software? Let's share tips and tricks.
  3. RobKorn

    Fiber link issues?

    14db loss in 400 foot is very high, I think either the test equipment wasn't "zero out" before test or you have some bad termination/fiber. Check the results from either end, is it better or worse depending on which end of the link you test from? Try to make the hardware link up "locally" with...
  4. RobKorn

    Minimum Run In Data Center

    I was not aware of a minimun length for a cable run. Fiber does have such issues, but I've never heard of it in copper. If there is such a rule, then how can you attach a server to a switch with a 6' patch cable, if there was such a rule there would only be huge patch cables. I say...
  5. RobKorn

    3com 4400 and netgear GSM7224 switches

    I am not sure how many slots you have open but the single port 1000baseSX fiber module is part number 3C17221. I don't know if you have $$$ but you should look at your setup to make sure you are not wasting the GigABit by having a 10/100 bottleneck in your backbone.
  6. RobKorn

    How to Connect to WAN Before Logging into Windows?

    Supplicant = wzc or the "manufacturers software" depending on the nic, mostly Truemobile or Intel ProSet. Security = WEP
  7. RobKorn

    Cat6 recommendations

    We use Bertek and Ortronics, I like the Series II connectors from Ortronics. They are larger than most connectors which helps with the terminations, fat fingers being what they are. I can still fit 12 drops in a double plate even though the jacks are larger. Lots of accessories available...
  8. RobKorn

    Gigabit over Cat-5e

    Mikeydidit: That is as clear as mud, didn't see anywhere that there was a difference between "Cat5E" and "Cat5e" Any else heard of this distinction?
  9. RobKorn

    Radio between two buildings

    You can use any Access Point that has removable ant., Bridge mode or at least Client mode in software. I like using Client mode because the main AP is also usable as a normal AP for wireless clients. If you set them up as Bridge, you loose all normal wifi access. Fleeman Anderson and Bird is...
  10. RobKorn

    How to Connect to WAN Before Logging into Windows?

    We had/have the same problem... another symptom is if you cable the machine, log on, log off, disconnect cable, activate wireless nic, then it will logon fine..... otherwise it can't find the domain. We thought we had it figured out with a Policy edit but now it is a problem at another site...
  11. RobKorn

    Find Wireless Access Point IP Address

    Another trick is to use "Angry IP scanner". You can scan the entire network and try the active addresses only, this saved my butt recently when an AP switched itself back to dhcp from static address. Found the device in the scan and reconfigured it.
  12. RobKorn

    Radio between two buildings

    Reminds me of funny story: Client calls, they have just cut the fiber to remote building and are desperate. I show up with my "emergency bag of tricks" and setup a wireless bridge between the buildings. I used 2 AP's setup in bridge mode and ran cable for ant. out window. Mounted ant. on 10'...
  13. RobKorn

    Cat6 bonded pairs tips needed!

    I am trying to find out tips on installing/terminating the bonded UTP cabling. I have a tough time separating a pair enough to fit it over the stuffer block. Seems like they over-engineered this cabling, if it is so hard to make a gap in the pair then the installers are going to resort to...
  14. RobKorn

    Gigabit over Cat-5e

    Okay, I'll bite..... What is with the Big E vs Little e stuff? I have a friend that insists there is a difference yet I can find no documentation for this. Now I see it mentioned here! BTW: I have a Gig connection running on Cat3 at 50meters. Up for more than a year, zero...
  15. RobKorn

    Questions about 3com network supervisor.

    The clouds you speak of are a pain. Sometimes they are caused by having "non managed" devices on the LAN. Also, you may have "managed" devices that have incorrect SNMP community strings. One of the problems I have is with "mobile" devices. If I scan today and a client machine is found on...
  16. RobKorn

    3com 4500g with 7912g Cisco IP phones

    As far as I can tell the "End-of-Life" announcement for the 7912g phone was issued Sept 2006. If fact you can still order one until March 2007. The standards for POE were approved June 2003. So they are in effect selling POE hardware that is NOT standards based even TODAY! It is quite a...
  17. RobKorn

    what is AL1-AL4,unit:port...

    AL1 is Aggregate Link number 1.... this is a process of "trunking" multiple ports together logically to create a trunk between switches. This allows you to increase your bandwidth with little or no cost. How to: on main or core switch, define AL1 as having 2 ports, lets say ports 1 and 2...
  18. RobKorn

    Questions about 3com network supervisor.

    These messages from 3ND are info. only, no need to research them unless you are having "reported/observed" problems with the connection. You can generate this message by disabling the NIC in a workstation, rebooting the workstation, or any other event that closes the port. I generally disable...
  19. RobKorn

    3com 4500g with 7912g Cisco IP phones

    That says a lot for "industry standard" doesn't it????

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