1. I have understood that for every vlan access must have a vlan authentication, is there any way to minimize the amount of address for the vlan authentication, eg. if I have 4 access vlan in the same building, I have leaving a single vlan authentication
You can use same auth vlan and place the users in different access vlans by using User-Role VLANs
As for bandwidth, depends on your requirements and your layout. If you're doing Inband, you're limited by 1G. For OOB, you're limited to that only for the initial authentication and posture assessment portion.
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We have configured the outside and inside Interface with official ipv6 adresses, set a default route on outside Interface to our router, we also have definied a rule , which also gets hits, to permit tcp from inside Interface to any6.
In Syslog I also se...