dissecting DHCP - Q2

Defryn, Guy G.P.Defryn at massey.ac.nz
Tue Mar 17 01:13:35 UTC 2009


Thanks for the help so far. Up to my next question.
I have two dhcp servers (partner state is normal now)
and an XP client, with a current lease obtained from server 1.

When I restart or shutdown/start my client I see exactly the
same entries in both DHCP log files (except hostname of server of course)

-a new map added from tur-xp1.domain.com to 130.123.128.106
-a reverse map added from 106.128.123.130.in-addr.arpa. To tur-xp1.domain.com
-a DHCPRequest for 130.123.128.106 via eth0
-a DHCPAck on 130.123.128.106 via eth0

Is it normal that both server's log files show the exact info?

Also, I had a tcpdump process running on both servers.
On a shutdown/start tcpdump shows me the following on both servers (timestamp omitted and hostname differs for each server)

IP 0.0.0.0.bootpc > 255.255.255.255.bootps: BOOTP/DHCP, request from <MAC Address> (oui unknown), length: 309
IP tur-net1.domain.com.bootps > tur-xp1.domain.com.bootpc: BOOTP/DHCP, Reply, length: 315

Is this all I should see?



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