EduMan Posted May 25, 2010 Author Posted May 25, 2010 (edited) Still didnt work..Tried a new Network Lead also. I also tried changing the IP to 10.34.70.5, still nothing. The main switch(s) have all the servers on them which is down the corridor, my switch in the ICT Office is cabled to the same switch as the CCTVSERVER and SERVER. Edited May 25, 2010 by EduMan
EduMan Posted May 25, 2010 Author Posted May 25, 2010 Ive changed the IP so it is out of the 10.34.70.x range and into the 10.34.68.x range (same as my office computer) and it works fine. Maybe it is an issue with the Subnet Mask?
powdarrmonkey Posted May 25, 2010 Posted May 25, 2010 Ive changed the IP so it is out of the 10.34.70.x range and into the 10.34.68.x range (same as my office computer) and it works fine. Maybe it is an issue with the Subnet Mask? No, your mask is correct. I still think there is something in between interfering and this result makes me more confident.
featured_spectre Posted May 25, 2010 Posted May 25, 2010 Do you have the default gateway set up to be the same on both?
Hightower Posted May 25, 2010 Posted May 25, 2010 Ive changed the IP so it is out of the 10.34.70.x range and into the 10.34.68.x range (same as my office computer) and it works fine. Maybe it is an issue with the Subnet Mask? It shouldn't be. As long as your systems all have the same subnet, they should be able to use any address in 10.34.x.x and still talk to each other.
EduMan Posted May 25, 2010 Author Posted May 25, 2010 (edited) Somthing must be interfering with the whole range of 10.34.70.x then. Let me change the ip of my office computer to that range and see what happens? Edited May 25, 2010 by EduMan
Hightower Posted May 25, 2010 Posted May 25, 2010 Somthing must be interfering with the whole range of 10.34.70.x then. Let me change the ip of my office computer to that range and see what happens? What about if you assign it in the 10.34.71.x range? Will it work then?
EduMan Posted May 25, 2010 Author Posted May 25, 2010 Ive changed my IP on my office computer to 10.34.70.15 and i can ping server (10.34.68.11) I still can not ping CCTVSERVER though (10.34.70.5) Pinging 10.34.70.5 with 32 bytes of data: Reply from 10.34.70.15: Destination host unreachable. Request timed out.
Hightower Posted May 25, 2010 Posted May 25, 2010 Why is a ping for 10.34.70.5 coming back as 10.34.70.15?! Try putting the CCTV system onto an address in the 71 range
EduMan Posted May 25, 2010 Author Posted May 25, 2010 Others couldnt see it so i flushed my DNS and now it dont work
Hightower Posted May 25, 2010 Posted May 25, 2010 Works on 10.34.71.10... odd? Something's interfering with .70 range then surely? What about high up in the .70 ranges? Does that work (like 70.200). You sure nothing is using those IP's? Can you ping 10.34.70.2, .5, .11, .15 and get a reply (whilst the CCTV stuff is still assigned a .71 - to see if something is already using those addresses?)
EduMan Posted May 25, 2010 Author Posted May 25, 2010 Others couldnt see it so i flushed my DNS and now it dont work
m25man Posted May 25, 2010 Posted May 25, 2010 (edited) The thread starter began with a TYPO in the range!.... 10.35.68.1 - 10.34.70.254 (Im guessing you meant 10.34.68.1 - 10.34.70.254) They appear to have chosen an incorrect subnet for the desired range. An IP scope must have a range of 254, 510, 1022, 2046 etc etc.... Sorry but you can't have 765 Hosts ! The Mask 255.255.0.0 provides 65534 addresses from 10.34.0.1 to 10.34.255.254 So what you have done is actually created your network starting at 10.0.0.0 but begun assigning addresses from 10.34.68.1 This in itself need not give you a problem just as long as everything else is configured correctly. Your Broadcast address is currently 10.34.255.255 If you are a private network this may be fine, but if you are participating with your LEA/RBC over an MPLS or other shared network you are going to be very unpopular. Whilst we want to minimize broadcast traffic on any lan, it is also an essential part of the learning process an incorrectly Masked Subnet wil create all sorts of unwanted traffic, broadcast storms, blackouts, switch lockups and all sorts. You are now going to need to double check every static assigned device on the LAN to ensure that you have the Subnet Masks correctly set and that includes the Gateway device. The biggest danger here is going to be ARP Poisioning as switches and NICs hold on to MAC addresses thinking they are local when they are not. Personally if I were doing it myself (after checking with my RBC provider) I would have used 10.34.68.0 Mask 255.255.252.0 This provides 1022 Hosts from 10.34.68.1 - 10.31.71.254 and a Broadcast Address of 10.34.71.255 You know for certain where you start and finish, where your gateway is and your broadcast ceiling. It also allows for simpler internal routing later if ever needed. Edited May 25, 2010 by m25man Corrected by Hightower THX
glennda Posted May 25, 2010 Posted May 25, 2010 I know random question: are they vm's? and if so what are you using to host them with?
Hightower Posted May 25, 2010 Posted May 25, 2010 An IP scope must have a range of 254, 510, 1022, 2046 etc etc.... Sorry but you can't have 765 Hosts ! I think he meant that he was only using this address range from the subnet, not that the subnet restricted him to these. The Mask 255.255.0.0 provides 65534 addresses from 10.0.0.0 to 10.255.255.254 A subnet of 255.255.0.0 would provide addresses from 10.34.0.0 (network) to 10.34.255.255 (broadcast). A subnet of 255.0.0.0 would provide the range you have given (10.0.0.0 to 10.255.255.255). 1
AXE Posted May 25, 2010 Posted May 25, 2010 What does the routing table show? Type "route print" from the command prompt.
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