I would like to setup two vlans on the sa2000. Example vlan8 IP 192.168.8.10/24 and Vlan 5 192.168.5.10/24. On the Cisco switch, we have set the interface to Trunk. For some reason when users trying to authenticate to DC it timeout. The original internal interface was set to 192.168.1.10 GW 192.168.1.1. The logs errors complaining about it can't connect to 192.168.1.1 even though we have switched the port to trunk?
You need to use the native-vlan command on your Cisco to tell the switch in which VLAN it needs to put the untagged traffic from your internal interface.
VLANs are a feature only available with an IVS license to my knowledge and not available on 2000 series.
Either use the native vlan option suggested above, which will assume all untagged traffic belongs to a vlan, or if you need more than one vlan (which sounds like is the case) create a third vlan to a router, and use the router to route between the vlans.
VLAN option is available on all SA series ( except 700) as feature of the IVE OS for a couple of years now. You don't need IVS license for this.
I'm not talking crap, been working with SA's since they we're still yellow ( Neoteris).