I don't know of any reason why it would fail.  I have several VLAN on my 6024 and I have management from any/all of them (as long as I'm on the correct subnet and VLAN).  But anyway, if you provide more info like screen shot of errors and maybe post your config, maybe we can see what's wrong.

Cuong.

Unfortunately, that's not it.  It happens within seconds after logging in.  Sometimes it just pops the login window up inside the frame where you would normally see the switchports.  I'll see if I can post a screen shot.

I can get that for you, but keep in mind that we can manage all of our other Dell switches just fine through the GUI (53xx, 34xx).

We have tried it from Server 2003, 2000, and XP Pro all running IE6.

What OS are you running, what browser (and version), are you running anything like a firewall or any security suite or anything like that on your system?

Cuong.

What do you mean random point?  There is a security timeout that will log out your session if you are idle for longer then the timeout period.  Maybe that's what you are observing?

Cuong.

OK, it might take a day or two as this is a job I'm doing on the side.

Yes, it's routed and so it should work.  Anyway, lets wait for screenshot and config then we'll see.

Cuong.

Here's the switch config. The addressing is different from my original post, but the problem is the same. We can no longer stay logged into the switch GUI long enough to get a screen shot. As soon as we login, it logs us back out and gives the login dialog box. In the switch log, you can see an entry for the successful login, and then right after that you see and entry for the logout. I'll a copy of that as soon as I can.

spanning-tree priority 0
interface range ethernet g(17-23)
spanning-tree portfast
exit
interface ethernet g1
description Tower_1
exit
interface ethernet g2
description Tower_2
exit
interface ethernet g11
flowcontrol auto
exit
interface ethernet g17
speed 100
exit
interface ethernet g24
description "Legacy Net"
exit
interface range ethernet g(1-16,24)
switchport mode trunk
exit
vlan database
vlan 5,10,15,20-25,35
exit
interface range ethernet g(17-23)
switchport access vlan 5
exit
interface range ethernet g(1-16)
switchport trunk allowed vlan add 5
exit
interface range ethernet g(1-16)
switchport trunk allowed vlan add 10
exit
interface range ethernet g(1-16)
switchport trunk allowed vlan add 15
exit
interface range ethernet g(1-16)
switchport trunk allowed vlan add 20
exit
interface range ethernet g(1-16)
switchport trunk allowed vlan add 21
exit
interface range ethernet g(1-16)
switchport trunk allowed vlan add 22
exit
interface range ethernet g(1-16)
switchport trunk allowed vlan add 23
exit
interface range ethernet g(1-16)
switchport trunk allowed vlan add 24
exit
interface range ethernet g(1-16)
switchport trunk allowed vlan add 25
exit
interface range ethernet g(1-16)
switchport trunk allowed vlan add 35
exit
interface vlan 5
name Servers
exit
interface vlan 10
name Switches
exit
interface vlan 15
name Printers
exit
interface vlan 20
name 1st_Floor_Office
exit
interface vlan 21
name MS_Lab
exit
interface vlan 22
name Library_ELAB
exit
interface vlan 23
name Tower
exit
interface vlan 24
name Parish
exit
interface vlan 25
name ECC
exit
interface vlan 35
name Misc
exit
interface ethernet g24
ip address 192.168.0.11 255.255.0.0
exit
interface vlan 5
ip address 172.16.5.1 255.255.255.0
exit
interface vlan 10
ip address 172.16.10.1 255.255.255.0
exit
interface vlan 15
ip address 172.16.15.1 255.255.255.0
exit
interface vlan 20
ip address 172.16.20.1 255.255.255.0
exit
interface vlan 21
ip address 172.16.21.1 255.255.255.0
exit
interface vlan 22
ip address 172.16.22.1 255.255.255.0
exit
interface vlan 23
ip address 172.16.23.1 255.255.255.0
exit
interface vlan 24
ip address 172.16.24.1 255.255.255.0
exit
interface vlan 25
ip address 172.16.25.1 255.255.255.0
exit
interface vlan 35
ip address 172.16.35.1 255.255.255.0
exit
ip route 0.0.0.0 0.0.0.0 172.16.5.254
ip dhcp relay address 172.16.5.11
ip dhcp relay enable
hostname OLP_Core
username sysop password 9e7ca4d528d17985a4f8cf52247f6823 level 15 encrypted
clock timezone -5