Posted 2 Dec 2011 (edited) I make a H/W configuration for CP343-1 ADVANCED. But there is some message such as the attachment. What is the meaning of the message? Thanks for your help in advance. message.bmp Edited 2 Dec 2011 by Tom749 Share this post Link to post Share on other sites
Posted 2 Dec 2011 What this is referring to is the communications protocol and the method on which it forwards packets. Some protocols will only look at the IP address and based on the first octal, assign a class to that network. If you manually enter a different mask than the Class that is set by this method, you will get errors. You need to figure out if the protocol needs to be changed so you can manually enter a mask of any class, or leave the protocol you have and enter the correct mask for the class. By a protocol assuming a class, it does not need to send the mask with the packet and therefor reduces the size of the header in the packet. You can search online for a good class reference table that will show you the address ranges of each class. Share this post Link to post Share on other sites