Ping not working?

Question

I read from a book, says that two computer A and B:

A: 192.168.26.129/24 gateway 192.168.26.2

B: 192.168.26.3/27 gateway 192.168.26.2

The book say that if B ping A, it can works.

i. So I test it on cisco packet tracker, and it's not working?

ii. But after I change the B to 192.168.26.3/24, and it can work fine, I know that.

iii. Then I test change B to 192.168.26.3/24, it is still work.

What is the difference between step (i) with setp (iii)?

I know it must relative to arp? someone can tell the detial? or did I do something wrong?

score 0 · Answer 1 · answered Apr 20 '16 at 13:36

0

You have overlapping IP addressing ranges. 2 possible solutions:

answered Apr 20 '16 at 13:36

Viktor Borisov

Thank you for your reply. I know how to fix it. My problem is that step (i) and step (iii) comes different result? they are the same – green2rabbit Apr 22 '16 at 02:08
yeah, when I clear the ARP cache of both computer, I cant ping through. Does this happens in real computer? I only test it on Cisco Packet Tracker. So the book's answer is not rigorous? – green2rabbit Apr 25 '16 at 14:25
this happens in real world as well :) – Viktor Borisov Apr 26 '16 at 18:59

1 Answers1