DHCP questions

hello,

  have question have been unable resolve.  in virtual environment, there several networks.  two of networks have dhcp, mine , 1 other.  on frequent occasions systems (domain joined) getting issued ip addresses other dhcp server.  these 2 networks in different subnets.  how happening?  what options prevent happening?  how can force vm's receive ip's dhcp server?  

hi

a little more detail help.

if on separate subnets normal, first dhcp server respond, issue address.

to isolate them must either in different networks not connected or in separate vlans.

the dhcp dora process

of discover, offer, request acknowledge not rely on layer 3 networking (ip addressing) relies on lower layer , done broadcasting across whole network.

the client sends broadcast packet , dhcp servers receive sends broadcast offer back.

the first offer accepted , client sends request broadcast packet dhcp server offering.

when chosen dhcp server acknowledges request, when client given ip address, subnet mask , other options such gateway etc. therefore dhcp server dont want issue addresses clients cannot in same broadcast domain client.

i hope helps.

if please mark answer. happy offer more info if required.

yours

ed

link below

http://www.scribd.com/doc/24445850/dora-process-in-dhcp-dhcp-d-iscover-dhcp-o-ffer#scribd

Windows Server  >  IPAM, DHCP, DNS