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<DIV><FONT face=Arial size=2><SPAN
class=375472613-03022009>Hi,</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=375472613-03022009></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=375472613-03022009> We have
a Network element AAA where it sends 250 clients per second to aquire a
Lease from ISC DHCP server. and I have seen that a 4 way quad core AMD opteron
processor/ SAS I/O drive with RHEL 5 and ISC DHCP 3.0.5 can handle upto 125
lease per second ( Result achieved from Nominum DHCPperf
tool).</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=375472613-03022009></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=375472613-03022009> With
total 135000 clients in my network it takes around 18 min to complete the lease
( Time taken= (135000/125)/60 = 18 Minutes), W</SPAN></FONT><FONT face=Arial
size=2><SPAN class=375472613-03022009>hen my AAA network element which is used
for authentication and other purpose finishes the job in approx 8 Minutes,
while my DHCP server take 18 Minutes to complete the Job.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=375472613-03022009></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=375472613-03022009> Say at
the end of 3 seconds, DHCP server gets a hit of 750 (250+250+250) Discover
request while only 375 (125+125+125) is being allocated an ip address and
balance 375 will be in a queue similarly.....</SPAN></FONT><FONT face=Arial
size=2><SPAN class=375472613-03022009> </SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=375472613-03022009> at the end of
500 seconds, my DHCP server would have got aprox 135000 discover request and it
has processed only approx 65000 request and balance 75000 will be pending in the
queue.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=375472613-03022009></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=375472613-03022009>My
queries</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=375472613-03022009></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=375472613-03022009>How long the client
request will remain in queue </SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=375472613-03022009>what will be the
maximum attempt the client will make to obtain the
lease.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=375472613-03022009>What will be the
state of clients which are there in queue.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=375472613-03022009>Is there any other
Best solution in which my DHCP server can handle all 250 clients at a second
</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=375472613-03022009>Can i have 2 DHCP
server in active active state handling different scopes so that all 250 request
are handled and there is no queue if so how the lease file will be
maintained.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=375472613-03022009></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN
class=375472613-03022009></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=375472613-03022009> Please help
me understanding how the DHCP server handles this situation</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=375472613-03022009></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN
class=375472613-03022009>Regards</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=375472613-03022009>Mani</SPAN></FONT></DIV></BODY></HTML>