From: nznog-bounces(a)list.waikato.ac.nz [mailto:nznog-bounces(a)list.waikato.ac.nz] On Behalf Of Andrew McBeath Sent: Tuesday, 8 September 2015 7:53 PM To: nznog(a)list.waikato.ac.nz Subject: [nznog] Appeal to bigger brains
VMWare machine (Only one so far - on 10.10.10.0 network - can ping host, can ping external firewall, CAN ONLY PING ODD OR EVEN NUMBERED IP's DEPENDING ON WETHER IT HAS AN ODD\EVEN IP) ie if its forth octet is .125 it can ping .1, .3, .5 but if I change it to .126 it can only ping .2, .4, .6
Andrew McBeath
Hi Andrew, I came across something similar the other week at dayjob(); as a customer reported fault. In that case it turned out to be their switch - if they moved between a pair of stacked switches they could ping some hosts and not others depending on the source address and destination address and where they were plugged in. I believe they eventually resolved it with vendor intervention. If this is your lab, try moving between ports and keeping your IP address the same and see if you find you can reach some hosts and not others and whether it changes to the inverse once you move your port.