I have two ISPs and my external DNS provider can provide failover for DNS records to prevent me from needing BGP. All my servers go into a 6009 switch and from there it connects to a 3750 which links back to both ISPs. Is there a way with IP SLA to get it to failover automatically but not failback? For example, I host Citrix servers and if the line should go down during the day and clients re-connect I would hate for them to get disconneted again when the line moves back. Is this possible?