Virtual 2003 Server cannot talk to certain IPs

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hello all,

i have several (dozen) 2003 hyperv's cannot ping .255 addresses in particular 21 bit mask. it's odd scenario, , i've run out of things for.

example:

3 networks, 1.1.1.1, 2.2.2.2 , 3.3.3.3. have netmask of 255.255.248.0 , routing in between good.

2003 hypervs on of above networks cannot ping .255 addresses on 1.1.1.1 network. when can't ping, misnomer ran wireshark on several 2003 hyperv boxes having issue and... wireshark sees reply, yet ping request still times out, applications trying talk 1.1.1.255 or 1.1.2.255, etc.

oddly enough, 2003 hypervs can ping .255 addresses on other 2 networks (2.2.2.255, 2.2.3.255, 3.3.3.255, etc. )

any 2008 or 2008r2 hyperv can ping .255 addresses.  

all vm hosts running 2008r2. vm hosts able ping .255 addresses.  

hopefully i've supplied enough info here (in non-confusing manner) gets pictures , has idea?

from vm cannot ping 1.1.1.255 type "arp -a" , see if there mac associated ip.

mike crowley
check out my blog!



Windows Server  >  Hyper-V



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