2 servers running DHCP at different locations

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greetings all,

i set 2 dhcp servers @ company , have followed 80:20 rule.  servers @ different locations , have dhcp relay set in cisco routers.  seems working properly, having small problem when take laptop between sites.  lets hook laptop network , ip address.  when take other branch (which on different subnet) still keeps previous ip address.  should new address @ other branch since subnet different.  if ipconfig /release , ipconfig /renew give me address on correct subnet.  ideas why computer not realizing needs different address when take between branches.  fyi, have 2 branches , if ip @ either branch , go other branch have same problem.

*edit* forgot mention both servers running server 2003 r2

thanks help!!

alec

 

hi alec,

from post assume performing romaing across subntes of cisco routers , configuration of dhcp relay servers.

i know clients contacts ap ? these clients on wireless networks or wired networks ?

afaik wired networks should not have problem,  because when disconnect cable interface, tcp/ip stack release ip address , when client connects different subnet, new dora process take place provided dhcp server configured in network , issue dosent vaild in wired networks.

for wireless networks, routers should support appropriate roaming such cisco router support layer2 , layer3 roaming.

if performing layer 3 roaming here feel

 

 

layer 3 roaming occurs when client moves ap covers 1 ip subnet ap covers ip subnet. @ point, client no longer have ip address , default gateway valid within new ip subnet. because client's ip address , default gateway no longer valid, existing data sessions or voice calls fail because remote client can no longer reach local client.

 

sainath windows driver development


Windows Server  >  Network Infrastructure Servers



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