First, I'm happy to hear you're going through the Cisco Academy. I am a graduate of that program and have been an instructor for that curriculum at a local state college. I think that it is an excellent foundation no matter what your IT focus is in the future and would encourage anyone in the IT field to get the first semester book at a minimum. An IT knowledge built on the OSI model (or even TCP/IP model) will do wonders for your troubleshooting skills. Next, 16 is not a gateway... 16 in the last octet would be the network number. Network number and Gateway are not the same thing. A gateway is the IP address, from the useable pool of addresses, assigned to another router in that network. All devices that have interfaces should have the same first three octets and the last octet should be a value between (and including) 17-30. Each interface should also have the subnet mask 255.255.255.240. Assuming that the 28-bit mask is correct, anything other than 255.255.255.240 for the mask is wrong... not saying it won't work, but it's wrong. For a basic example, lets look at this in the good ol' 192.168.1.0 255.255.255.0 space, common to practically every home-class broadband router available. When you unbox the thing, it is configured with an ip address of 192.168.1.1 on it's LAN interface. You would then use that IP address as your "gateway" setting on any internal device. 192.168.1.0 (the network number) isn't typed as a setting anywhere, because it is a mathematical result of "anding" an IP address and the mask. So, if your PC is 192.168.1.10 on this network and your mask is 255.255.255.0 let's "and" them. 192.168.1.10 = 11000000.10101000.00000001.00001010 255.255.255.0 = 11111111.11111111.11111111.00000000 anding result = 11000000.10101000.00000001.00000000 So, we convert that back to decimal and we get 192.168.1.0... Our network number! Your original post says that you entered .16 as the "gateway ip" in Endian. That tells me that you have told Endian it needs to go to a router at 88.255.199.16 to get to the Internet. Now that we know that 16 is a network number and not a useable IP address on this network, we see that it definitely is not the correct setting for this field. Whomever is giving your a connection to the outside world, probably the same entity that told you to use this address space, should be able to tell you which of your pool of addresses is the correct IP to use as your gateway. Mike K.
________________________________ From: ozgurerdogan [mailto:[EMAIL PROTECTED] Sent: Fri 10/17/2008 03:54 To: efw-user@lists.sourceforge.net Subject: Re: [Efw-user] Entering correct subnet mask stops connection? Thats exatcly what I meant Mike Knisely. I am a CCNA student and I know all what you explained. So I have 16-31 and my netmask would be 255.255.255.240 and 16 is my gateway (network ID) and 31 is my broadcast ip and I use only 17-30 ip inside network. I do not remember why I entered 31 as netmask but at the moment it is running so. Maybe my datacenter did something in router so I can not enter 240, I will call them today. But by entering 240, I think I am doing correct settings right? Thank you very much. -- View this message in context: http://www.nabble.com/Entering-correct-subnet-mask-stops-connection--tp20015603p20028158.html Sent from the efw-user mailing list archive at Nabble.com. ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Efw-user mailing list Efw-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/efw-user
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