Hi,
we have 3 internet Leased Line connectivity. each link is connected with cisco internet router & below ASA as per below.
Internet link (ISP 1)--->Cisco Internet Router--->Cisco ASA 5525X----->Core switch--web server1, Mail server, site to site VPN,MX primary server etc.
Internet link (ISP 2)--->Cisco Internet Router--->Cisco ASA 5520----->Core switch--proxy server, secondary sell server, MX backup server etc.
Internet link (ISP 3)--->Cisco Internet Router--->Cisco ASA 5510----->Core switch--LABMATE Server, SAP Server, Lync 2010, Remote client VPN etc.
Problem: if any ISP link get down, respected server connectivity are down from internet world & business affect.
could you please suggest us, to achieve server availability from internet if any ISP link get down.
Thanks
Vinod