NAC - OOB - Virtual IP - users lost connecti

Hi.
So my problem is the follow:
I have i my customer a NAC OOB - Virtual Ip Gateway.
So, we have a many port profiles. Each Port profile witch its own authentication vlan and access vlan, for example:
TI -  auth vlan 585 -  access vlan 85
ENGINEERING - auth vlan 586 - access vlan 86
And works very very fine.
BUT
There is a common location called PLATFORM (auth vlan 587, access vlan 87) where, to put port profile on each User interface on the switch after 20 minutes or less, the machines that are on this profile (VLANs 587, 87) lose network connectivity, without bounce.
I checked and, some machines for no reason, are changed to vlan authentication without snmp Linkdown and even get stuck in with User certifield device list.
Other machines remain in vlan access, but lose all connectivity to the network without ping gateway and any other device.
Another vlan (for ex: vlan 1) that is not controlled by NAC continues to communicate normally.
I tried to see any logs on the switch but could not see anything abnormal (yet).
Other locations with others port profiles work normally.
The uplinks on this switches and interfaces users dont have any CRC or errors.
Could anyone help me? This is causing problems in my account.

Hi,
I understand then that the clients are not connecting through local or SSO mode, is that correct?
I would suggest 3 things so far:
1. Check the logs on the switches where the CAS's are connected, I had a similar problem where CAS would stop responding and the switches would complain about vlan mismatch or mac flapping, if you notice errors on the switches verify that you have:
* Vlan mapping enabled correctly
* Different native VLAN on the switch interface for trusted and untrusted CAS ethx.
* The correct vlans configured on each port: for untrusted just the authentication (layer 2) vlans, for trusted interface the access vlan (20) and the management vlan.
2. Enable the management vlan tag on the trusted interface of the CAS and use your CAS management vlan.
3. On the CAM go to the Clean access server section, manage one of your CAS's, the first window will show the services currently running on the CAS, verify if the SSO service is running, if it's not running, verify the configuration. If it's not allowing you to enable it, verify the time settings on your devices, the AD user and all the other settings needed for this to work.
Hope this helps,
Regards,

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    series are 3355 and 3315 as servers and 1 NAC manager in 4.7.2

    Thank you for feeding information back to the community to benefit others.
    That is the spirit...
    PK

  • NAC OOB Configuration

    Hi!
    I'm implementing an NAC oob solution. tTe CAS and CAM are in the Data-center on an remote network, and i need to control the vlan's that my users access on my remote sites.
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    TKX
    Miguel

    Hi,
    Well, it looks like you are starting now, so I would advise to get in touch with the OOB concept and guidelines:
    http://www.cisco.com/en/US/docs/security/nac/appliance/configuration_guide/48/cam/m_oob.html.
    You have L2/L3 mode.
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    You have Real-Ip/Virtual gateway mode.
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    You have also, nice chalk-talks where you can see VODs explaining the steps for configuring several features/deployments:
    http://www.cisco.com/en/US/prod/collateral/vpndevc/ps5707/ps8418/ps6128/prod_presentation0900aecd80549168.html.
    HTH,
    Tiago
    If  this helps you and/or answers your question please mark the question as  "answered" and/or rate it, so other users can easily find it.

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