Please explain me this bellow configuration in 2821 router at one of the our customer. why they are configure bellow mention configure what is the indicate please explain me cause i have also same router and two ISP bandwith with BGP routing, i also need load sharing between both ISP and failover when one ISP Bandwoth goes down that time my network not down it up auto working ISP bandwith. so what the configure templates as per my required ans also explain me what is indicate bellow mention configuration Please Please.
ip sla 1
icmp-echo 10.1.15.25 source-interface FastEthernet0/2/0
ip sla schedule 1 life forever start-time now
ip sla 2
icmp-echo 220.127.116.11 source-interface Serial0/1/0
ip sla schedule 2 life forever start-time now
Thanks in ADV,