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Full Discussion: basic networking
Special Forums IP Networking basic networking Post 17156 by manderson19 on Monday 11th of March 2002 08:39:40 PM
Old 03-11-2002
first of all, the example you gave is incorrect. if the first octet of the ip address starts with 192, then it is a class C address, not a class B. This means that the mask is 255.255.255.0 by default.

Second of all, you won't have 255 possible ip addresses, you will only have 254. The formula is 2 to the nth power - 2, where n represents the number of unmasked bits i.e., number of zeros in the fourth octet. the minus 2 is because you can't use zero (network number) and you can't use 255 (broadcast). However, some of your newer routers and switches will accomodate the zero network.

Third, if you are connecting computer to computer, make sure your cat 5 cable is a crossover cable, not a straight through or roll over. when connecting like devices, i.e., computer to computer, pin 1 is crossed to pin 3 and pin 2 is crossed to pin 6.

if you have any more questions, feel free to email me personally.

M.
 

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BlueZ(1)							   User Commands							  BlueZ(1)

NAME
dund - BlueZ Bluetooth dial-up networking daemon DESCRIPTION
DUN daemon SYNOPSIS
dund <options> [pppd options] OPTIONS
--show --list -l Show active DUN connections --listen -s Listen for DUN connections --dialup -u Listen for dialup/telephone connections --connect -c <bdaddr> Create DUN connection --mrouter -m <bdaddr> Create mRouter connection --search -Q[duration] Search and connect --kill -k <bdaddr> Kill DUN connection --killall -K Kill all DUN connections --channel -C <channel> RFCOMM channel --device -i <bdaddr> Source bdaddr --nosdp -D Disable SDP --auth -A Enable authentification --encrypt -E Enable encryption --secure -S Secure connection --master -M Become the master of a piconet --nodetach -n Do not become a daemon --persist -p[interval] Persist mode --pppd -d <pppd> Location of the PPP daemon (pppd) --msdun -X [timeo] Enable Microsoft dialup networking support --activesync -a Enable Microsoft ActiveSync networking --cache -C [valid] Enable address cache DUN daemon February 2003 BlueZ(1)
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