The first I have seen on another braindump but, I hadn’t appreciated the significance of it. You get an ‘exhibit’ picture which shows 2 subnets connected by a router.. The subnet on the left has a Server called Container (or something like that) and a PC called Wksta1, the subnet on the right has one server called Market. The IP address of Wksta1 is 140.7.2.22 the IP address of Container is 140.7.2.223 the left side of the router is 140.7.2.1. I can’t remember the IP address of Market or the right side of the router. It doesn’t say what the subnet masks are. The problem: Wksta1 can ping Market and receive a reply (across the router) but cannot ping Container on the local subnet - what is the Problem? The obvious answer is that the subnet mask of Container is incorrect but that is not one of the answers. The answers are - a: The Subnet mask of Wksta1 is wrong, b: The default Gateway of Wksta1 is wrong, c: The default Gateway of Market is wrong or d: The Default Gateway of Container is wrong. The fact that Wksta1 can ping Market across the router implies that there is nothing wrong with Wksta1 or Market, leaving it to be a problem with Container. But, having the wrong default gateway wouldn’t affect a ping across the local subnet. I’m confused… I chose d: The default Gateway on Container. I would be interested to know what the right answer is (and why)

ANSWER :

In tis particuliar case, the ping you are sending is going to the destination correctly but is not coming back to the source address because of the bad default gateway of the host you are pinging. This is the only explanation why you can ping all the other hosts. To troubleshoot a case like that, you would ping from the "bad" host and discover it is unable to ping anybody outside his subnet. This is like a reverse question.

Your answer was right, you wanted to know why, there you go !

_-JERY-_