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Upgrade NAC 4.1(6) to 4.8(2)... CAS or CAM first ?

Hi,

I'm trying to find what is the best way to upgrade my NAC platform...

This link say :

http://www.cisco.com/en/US/docs/security/nac/appliance/release_notes/48/482rn.html#wp65900

Upgrade Clean Access Servers Before Clean Access Manager

But this link say :

http://www.cisco.com/en/US/docs/security/nac/appliance/installation_guide/hardware/48/hi_prep.html#wp55030

Note You  must upgrade the CAM first prior to upgrading the CAS. Otherwise, you  will end up in a situation in which CAS has been upgraded but not the  CAM.

We have one CAM (failover) in HQ (main site) and five CAS (failover) in differents sites (regional offices) (Deploy : Real IP Gateway)

Note : I know upgrade from 4.1(6) to 4.8(2) is not one step, I need check upgrade path... from 4.1(6) to 4.6(1) and later 4.6(1) to 4.8(2).

Regards

Johan

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