Cannot add workstations to domain when negotiating ISL on Cisco routers.

[Scott]

I am having a problem joining workstations to a new child
domain when the traffic has to negotiate a Cisco router
with ISL trunking configured.

I have successfully joined a workstation to the domain by
plugging it directly into the switch where the DC's are so
I assume this has to be down to ISL.

Does anybody know if there is anything that can be done on
the Windows 2000 side to sort this out? (I have joined a
windows 2000 workstation to the old NT 4.0 doimain over
the current network without any issues, so I assume this
is down to the differences between NT 4.0 and Win2k).

 

[stretch]

I am having a problem joining workstations to a new child
domain when the traffic has to negotiate a Cisco router
with ISL trunking configured.

I have successfully joined a workstation to the domain by
plugging it directly into the switch where the DC's are so
I assume this has to be down to ISL.

Does anybody know if there is anything that can be done on
the Windows 2000 side to sort this out? (I have joined a
windows 2000 workstation to the old NT 4.0 doimain over
the current network without any issues, so I assume this
is down to the differences between NT 4.0 and Win2k).

Can you ping the ip address of the DC from the client? ie when you are not
pluged into the same switch.

 

[Guest]

Yes I can ping the DC's when they are plugged into the
normal network; The connectivity is good because when you
type in the new domain name and click OK it comes back
with the authentication box instantly... it's after this
point where the process time out... I've even tried
putting in an incorrect password to ensure that the
authenication is working - it comes back instantly saying
incorrect password or user credentials.

Any ideas are appreciated....