Has anything changed in your environment recently (#show audit-trail)? Have you completed any basic steps yet so far?
- Are your clients getting an IP address? What is doing DHCP for VLAN 70 (#show ip dhcp database), has this been checked?
- Is VLAN 70 still allowed on the relevant switch ports? (#show vlan status /#show port status)
- Within your AAA Profile (#show aaa profile XXXX), it will show the User Role which your clients are assigned, does this permit the access you require?
- Is the relevant routing in place to the gateway?
- If this is a cluster, are the VRRP's (#show vrrp) correct (e.g Master/Backup)
- What version of AOS are you running (#show version)?
If you could provide a bit little overview of your network this would be a good help.