G
Guest
Hi there,
i'm stuck on the following problem with XP clients on a switched network:
Several windows xp professional (SP1 and SP2) clients, members of a Windows
2003 Domain boot daily on a switched network, getting a dynamic IP address
without troubles (DHCP Server = Windows 2003 DC) as long as they live in the
default vlan 1.
As soon as i move a workstation to a different VLAN by setting the switch
port to the desired VLAN, windows is no longer able to get an IP address.
There is a firewall (Checkpoint) between the clients on this VLAN and the
DHCP aerver which has as dhcp relay service configured to forward the DHCP
Discovery packets straight to the DHCP server.
But: WLAN also lives in a different VLAN and the same firewall separates
both client and server in the same manner as described before and guess what:
it works for WLAN!
Trying to isolate the cause, i've booted one of this XP workstations from a
Live-Linux CD and it worked flawlessly, thus i'm pretty confident that the
problem is not on the firewall or switch configuration.
Also a PC with Vista RC1 manages to get the IP address from DHCP within the
same VLAN, with the same patch cable, pluged to the exact same switch port!
At the company i work for, there are lots of other locations i´ve set up in
the same manner and had no such problems.
Initially, i was excluding the possibility this could be related to group
policies or XP SP2 Firewall (which is turned off by GP) since the DHCP
procedure happens much earlier than that, nevertheless now i'm starting to
think that this could in fact be a XP TCP-IP related issue.
Did you already had similar problems, any idea i could go for?
Many thanks in advance and sorry for the long post.
Filipe
i'm stuck on the following problem with XP clients on a switched network:
Several windows xp professional (SP1 and SP2) clients, members of a Windows
2003 Domain boot daily on a switched network, getting a dynamic IP address
without troubles (DHCP Server = Windows 2003 DC) as long as they live in the
default vlan 1.
As soon as i move a workstation to a different VLAN by setting the switch
port to the desired VLAN, windows is no longer able to get an IP address.
There is a firewall (Checkpoint) between the clients on this VLAN and the
DHCP aerver which has as dhcp relay service configured to forward the DHCP
Discovery packets straight to the DHCP server.
But: WLAN also lives in a different VLAN and the same firewall separates
both client and server in the same manner as described before and guess what:
it works for WLAN!
Trying to isolate the cause, i've booted one of this XP workstations from a
Live-Linux CD and it worked flawlessly, thus i'm pretty confident that the
problem is not on the firewall or switch configuration.
Also a PC with Vista RC1 manages to get the IP address from DHCP within the
same VLAN, with the same patch cable, pluged to the exact same switch port!
At the company i work for, there are lots of other locations i´ve set up in
the same manner and had no such problems.
Initially, i was excluding the possibility this could be related to group
policies or XP SP2 Firewall (which is turned off by GP) since the DHCP
procedure happens much earlier than that, nevertheless now i'm starting to
think that this could in fact be a XP TCP-IP related issue.
Did you already had similar problems, any idea i could go for?
Many thanks in advance and sorry for the long post.
Filipe