We've seen this mystery pop up from time to time.... various problems/ 
solutions have been seen

1.  If you have L3 multihop disabled and the user picks up a NAT'd  
wireless network then he/she will not be able to login

2.  Just disabling any network interface other then the one that  
should be providing access has fixed some

3.  Rebooting the computer often helps (yes i'm sure you've tried  
this just throwing it in)

4.  Exiting and then restarting the agent has fixed some of them as  
well.

Also... FYI 3.5.6 release notes were posted.. basically one line  
saying it improved L3 multihop discovery.  A Dev engineer from Cisco  
tells me 3.5.7 release notes will be out late today or tomorrow.

Ryan Dorman, CCNP
Network Communications Specialist
Millersville University
717.871.5883
[log in to unmask]


On Sep 13, 2005, at 1:12 PM, Jason Drake wrote:

> Greetings all,
>
> We began rolling out CCA about a month ago and up until the server  
> upgrade
> to 3.5.5 and agent 3.5.6 everything was running fairly smooth.  
> Starting
> yesterday (after everyone was kicked) when some users attempt to  
> login, the
> login option is grayed out.
>
> The users are:
> 1. Receiving a valid IP from the CAS
> 2. Able to access our website (which is open to the unauthenticated  
> role)
> 3. Able to ping the CAS
> 4. Redirected to the web login and able to download the agent from  
> the CAS
>
> We opened a TAC with Cisco and after about 4 hours on the phone, their
> highly technical solution was to reboot the CAS and the CAM which  
> seemed to
> resolve the issue. Cisco was unable to give us any answers on what is
> causing this, or how to prevent it. We seem to have this problem  
> with at
> least 3 of our 4 CAS. The problem has started up again this  
> morning, which
> was again resolved by a reboot.
>
> We currently have about 2800 users online, but have received about  
> 100+
> complaints about users not being able to login.
>
> Are any other universities experiencing this? We are very close to  
> rolling
> back to our old system if we are not able to come up with a timely
> resolution, especially since move-in for our undergrads is on Saturday
> bringing us another 3000+ potentially angry students.
>
> Thanks,
>
> Jason Drake
> IT Coordinator, Residential Network Services
> University of California, Irvine
> (949) 824-9543
> http://resnet.uci.edu
>