Static IP okay...DHCP no

I have just recently lost communication with several XRAID systems that are set to DHCP. I can ping the ones set to static but can't ping the ones on dhcp. All of my other systems on the network that are set to dhcp are working fine...except my xraids.
Not sure where to start! Help!
I am running RHEL4.
Thanks!

We had a very similar thing happen today to our raid, we only use one controller the upper and set to dhcp, our dhcp serves a static address to the raid 192.168.168.162 and the controller will no longer pull that address - it gets 192.168.168.253 which is actually out of the range allowable - it also shown a different router address 192.168.1.1 rather than 192.168.168.1 we have troubleshot the router it is serving addresses correctly, we have changed the ethernet cables to new ones, we have tried the lower controller and that pulls other addresses - our it guy is stumped - he thinks it might be our switch seems the fans have failed and is running hot, not likely he says, could be our router he is going to replace, says that is also not likely, upgraded firmware to 1.5.1 nothing changed - what else can we do? should we reset the controller? will that erase data on the raid? what could it be

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    i have a 515 pix that i've been playing with and it has 2 static outisde IP's, i'm trying to get it to establish a VPN conneciton to a DHCP router.  if i could do by hostname i would have no issues, but since the PIX wont let me its kind of moot.
    is there something i can do with establishing a tunnel?  i'd really like to get this going  

    and actually, would it be better if i did certificates in this situation?

  • Why are my computers using static insead of DHCP

    I have decided to test the Home Hub 3 one last time, before I stick to the home hub 2 till bt infinity is released then get a cable router. Anyway when I add a computer to the network the HH3 seems to be giving them static IPs instead of DHCP and giving gaming consoles DHCP is there anyway to get the static for computers to use DHCP as I cannot find any option in the settings.

    When you click on the device name in the 'Devices' list under 'Home Network' does it have the 'IP address assignment' set to Static, or is that this says 'DHCP' but the 'Always use this IP address' is set to Yes?
    On my HH3 my laptops both say DHCP, but the 'Always use this IP address' set to Yes and if I change it to No it doesn't stay that way, when I go back to the device list and to the laptop again it's gone back to Yes. I have lots of connection issues as per my thread (http://community.bt.com/t5/BB-Speed-Connection-Issues/HH3-Wireless-N/td-p/232269) from the laptops and losing connection when other devices are turned on.
    On my HH2 my laptops both say DHCP, and the 'Always use this IP address' is set to No - I don't have any connection issues with the laptops.
    On the HH3 changing the wireless interface type from '802.11 b/g/n (Recommended)' to '802.11 b/g' doesn't make any difference for me - apart from slowing down the laptop connecetion when I can get it to work.
    My HH2 is set to '802.11 b/g/n (Recommended)'

  • Static ip works dhcp Assigned IP not work

    environment:
    1. D-link 7100 router provide internet service. DHCP enabled from 192.168.0.140 to 192.168.0.240
    2. A DC setup to provide DNS and DHCP, server IP192.168.0.10. DHCP enabled from 192.168.0.20 to 192.168.0.100
    3. a normal switch connect the router and DC. 
    3. Client by default will get IP from DHCP (DC server) .
    problem:
    some computer got the IP from DHCP server but can't ping through the router, but if you change to manual Ip address it will work, or after restart the router also works. 
    so any ideas? thanks a lot. 
    Misnotm

    I agree it's the DNS address is part of the issue.
    Another thing is if the clients are Windows 7 or newer, then you have the NLA to deal with, and even if it may have a correct ipconfig, it may configure the network as unknown.
    I've seen this with two separate IT companies that have called me with issues regarding this. If you use the server's DHCP and disable DHCP on the router, as suggested previously in this thread, the issue will disappear.
    Here's more on the NLA and how it work.
    Network Location Awareness (NLA) and how it relates to Windows Firewall Profiles
    http://blogs.technet.com/b/networking/archive/2010/09/08/network-location-awareness-nla-and-how-it-relates-to-windows-firewall-profiles.aspx
    Ace Fekay
    MVP, MCT, MCSE 2012, MCITP EA & MCTS Windows 2008/R2, Exchange 2013, 2010 EA & 2007, MCSE & MCSA 2003/2000, MCSA Messaging 2003
    Microsoft Certified Trainer
    Microsoft MVP - Directory Services
    Complete List of Technical Blogs: http://www.delawarecountycomputerconsulting.com/technicalblogs.php
    This posting is provided AS-IS with no warranties or guarantees and confers no rights.

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