I have two Dell 6248 I am installing for a client. We will be using them in a collapsed core capacity. Each Access Switch will have a connection to each of the Dell Switches. THe Dell Switches will handle Inter-vlan routing and are connected with the 10GB uplink module.
Everything works fine right now... I can ping across the switches, connect from a workstation on Switch A to a Workstation on Switch B, ping with the access layer involved, etc.
My only issue is with redundantcy. All the Hosts default gateway addresses are setup on Dell Switch A. Switch B's VLANs have there own IP addresses within the same applicable subnets. If I have an Access Layer Switch with a trunk to each 6248 and I turn off Switch B, everything works fine. However, if Switch A is turned off we lose the ability to connect across the vlans, due to the hosts having the wrong default gateway.
I am looking for a way to get around this issue. How can I make it so that if Switch A is turned off, the hosts can automatically connect to the different VLANs? Any suggestions?