I'm looking for some clarification on ip sla and track operation specifically with respect to the outbound interface of the sla icmp-echo target. If the source-interface is specific in the ip sla configuration, i.e.
ip sla 1
icmp-echo a.b.c.d source-interface gig0/0
ip sla schedule 1 life forever start-time now
track 1 ip sla 1
ip route 0.0.0.0 0.0.0.0 <next-hop> track 1
Is this configuration sufficient to forward the sla packets outbound on gig0/0 and to the next-hop as configured in the default route, assuming the next-hop is directly connected to gig0/0? Does configuring the track statement with or without the reachability option have an impact on the outbound interface?
In order to ensure the outbound interface of the icmp-echo target, is a host route configuration required?