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Ralf--
without seeing a packet trace of the network I can't be certain, but what I
suspect is happening is that your clients are slightly out-of-synch with
your perception....
When a Windows client boots, it enters the INIT-REBOOT state unless (1) it
did not have an IP address when it shut down, or (2) the IP address lease it
did have expired while it was powered off. In the INIT-REBOOT state, the
client *does* have a valid IP address, so does *not* broadcast its request.
Because it usually will have a valid IP address, a booting client will not
usually get a new address from a DHCP server.
Running "ipconfig /release" followed by "ipconfig /renew" causes the client
to send the server a DHCPRELEASE message, which terminates its existing
lease, and then the client enters the INIT state. From the INIT state, the
"/renew" causes the client to broadcast a DHCPDISCOVER message, which begins
the IP address allocation process anew.
What you are describing seems to be entirely normal behavior. Are your
booting clients unable to use your intranet, or are you having other
problems? Can you PING the switches from a client that just booted? Can
you run TRACERT or NSLOOKUP successfully from the client?
I don't think you are having a problem, especially if your clients can reach
other hosts through the switch.
--Barr
> From: Ralf Folkerts[SMTP:[EMAIL PROTECTED]]
> Sent: Wednesday, July 14, 1999 10:40 PM
> To: DHCP-Mailing-Liste
> Subject: DHCP & PacketEngines Swicthes...
>
> we recently replaced our old shared Network with a switched one based on
> the (Alcatel) Packet Engines Swicthes "Power Rail 1000" and "Power Rail
> 2200".
>
> Now, since then we experience *severe* DHCP-Problems! The Clients
> (Windows 95 and Windows NT 4) boot OK, but won't get an IP Address from
> the server. The Win-95 Users then might run "winipcfg" to Renew the
> address -- and then they get one!
>
> I watched the Server's Logfiles and it seems that no Broadcast comes
> thru to the server while the client machines boot. However, when they
> run Winipcfg the server receices the Broadcast and sends out the
> address!
>
> Does anybody know why this happens and what's going on?? Is there
> anybody else using the Power Rail Switches??
>
> Thanx in advance,
> _ralf_
>
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