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Wireless Networks Thread, IP Range issue in Technical; We have recently upgraded our IP Subnet so we have the following range; 10.35.68.1 - 10.34.70.254 We basically have done ...
  1. #1
    EduMan's Avatar
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    Unhappy IP Range issue

    We have recently upgraded our IP Subnet so we have the following range;

    10.35.68.1 - 10.34.70.254

    We basically have done this so all of our CCTV is on the range 10.34.70.x

    Our main Server is IP 10.34.68.11
    Our CCTV Server is IP 10.34.70.2

    We can get our server to ping out cctv server but my office computer or any computer to that fact cannot ping it or gain access to it.

    My computer information as follows;

    Code:
    Ethernet adapter Admin Connection:
    
       Connection-specific DNS Suffix  . :
       Description . . . . . . . . . . . : Realtek RTL8168C(P)/8111C(P) Family PCI-E
      Gigabit Ethernet NIC (NDIS 6.20)
       Physical Address. . . . . . . . . : 00-24-1D-D5-9D-98
       DHCP Enabled. . . . . . . . . . . : No
       Autoconfiguration Enabled . . . . : Yes
       Link-local IPv6 Address . . . . . : fe80::ddcb:ab11:30dd:48d4%11(Preferred)
       IPv4 Address. . . . . . . . . . . : 10.34.68.145(Preferred)
       Subnet Mask . . . . . . . . . . . : 255.255.0.0
       Default Gateway . . . . . . . . . : fe80::3045:e6e7:ba12:612c%11
                                           10.34.68.1
       DHCPv6 IAID . . . . . . . . . . . : 234890269
       DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-13-75-AE-B6-00-24-1D-D5-9D-98
    
       DNS Servers . . . . . . . . . . . : 10.34.68.11
       NetBIOS over Tcpip. . . . . . . . : Enabled
    Does anyone have any ideas at all?
    Im confuzzled..

  2. #2

    Hightower's Avatar
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    What's the subnet for the CCTV system (may sound like a silly question but just to double check)? Can you ping the server from your PC? Have you tried temporarily disabling the firewall on your PC and pinging the CCTV system?

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    EduMan's Avatar
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    This is the ipconfig for CCTVSERVER;

    Code:
    Ethernet adapter Local Area Connection:
    
       Connection-specific DNS Suffix  . :
       Description . . . . . . . . . . . : Broadcom BCM5708C NetXtreme II GigE (NDIS
     VBD Client)
       Physical Address. . . . . . . . . : 00-1C-23-BA-B8-1C
       DHCP Enabled. . . . . . . . . . . : No
       IP Address. . . . . . . . . . . . : 10.34.70.2
       Subnet Mask . . . . . . . . . . . : 255.255.0.0
       Default Gateway . . . . . . . . . : 10.34.68.1
       DNS Servers . . . . . . . . . . . : 10.34.68.11
    Yeah ive tried the firewall issue. Ive tried on XP, Windows 7. I can remote in to CCTVSERVER through SERVER though.


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    powdarrmonkey's Avatar
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    Clear the arp tables on both machines and intermediate switchgear. Failing that, it smells like something is doing some layer 3 filtering (do you have ACLs on any switches?).

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    EduMan's Avatar
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    Could it be an issue with the wrong Subnet Mask for the ranges?

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    nephilim's Avatar
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    Damn you eduman, you beat me too it!

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    EduMan's Avatar
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    lol!
    What does it need to be?

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    Hightower's Avatar
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    You're subnet seems fine to me. 255.255.0.0 means your network is 10.34.0.0 - which means 10.34.1.1 can talk to 10.34.90.2 if you wanted to.

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    36Degrees's Avatar
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    Quote Originally Posted by EduMan View Post
    lol!
    What does it need to be?
    22 bits for 10.34.68.1 - 10.34.71.254 so SNM of 255.255.252.0

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    36Degrees's Avatar
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    Quote Originally Posted by Hightower View Post
    You're subnet seems fine to me. 255.255.0.0 means your network is 10.34.0.0 - which means 10.34.1.1 can talk to 10.34.90.2 if you wanted to.
    LOL didn't notice the current SNM! So yes, that should be fine as Hightower stated.

  11. #11
    EduMan's Avatar
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    Ah,

    I have no idea what the issue is then :S

  12. #12

    Hightower's Avatar
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    Does your CCTV stuff have a list of 'allowed' IP addresses? It may be, for security reasons, it only allows certain IPs to connect to it. Take a look in the management software and see if there is any place you can add the IP for your computer.

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    EduMan's Avatar
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    The server allowed me to connect to it when it has an IP of 10.34.68.180. But I wanted all CCTV to be in the range of 10.34.70.x as we have a lot of cameras now.

    Nothing has been changed on it at all. Its really odd.

  14. #14

    Hightower's Avatar
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    How are you connecting? Is it web based? If so, are you using IP or a name (like CCTVCam1) to try and connect?

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    EduMan's Avatar
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    RDP, I normally use the IP but neither the server name (cctvserver) or 10.34.70.2 works

    But i cant even ping it;

    Code:
    Pinging 10.34.70.2 with 32 bytes of data:
    Request timed out.
    Request timed out.
    Request timed out.
    Request timed out.
    
    Ping statistics for 10.34.70.2:
        Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),
    Last edited by EduMan; 25th May 2010 at 01:52 PM.

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