Cisco IOS (SLA / Track / event manager). Restarting Interface on fail.

Recently it appeared that one of the branches I'm responsible for loses link on one of interfaces. I don't know why but when interface is `shutdown-noshutdown`-ed everything becomes OK. So I looked for a way to `restart` interface automatically:

#First we'll create SLA (Service Level Agreement)
#sla number is `1`
#it will ping `172.16.0.70` from `172.16.0.77` IP source address
#ping will be issued every 3sec
#threshold must be < timeout
#threshold is RTT (Round Trip Time - time needed to reach the other side and to return) in msec - needed for SLA Statistics and Monitoring
#timeout - if no answer in 1.5sec - consider it as failed attempt
ip sla 1
 icmp-echo 172.16.0.70 source-ip 172.16.0.77
 threshold 1000
 timeout 1500
 frequency 3
exit
#Then we'll make it endless and start it right now:
ip sla schedule 1 life forever start-time now
#show commands fro SLA:
sh ip sla configuration  1
sh ip sla statistics 1

#Now we'll configure tracker of the SLA
# track number 10
#uses SLA number 1
#consider down if down for 10sec
#consider up if up for 60sec
track 10 ip sla 1 reachability
 delay down 10 up 60
#to view:
sh track brief
sh track 10

#Configure event manager (response on event)
#event manager named restart_interface
#will use track number 10
#restart_interface will be executed if track 10 state is down
event manager applet restart_interface
 event track 10 state down
 action 0   cli command "enable"
 action 1   cli command "conf t"
 action 2   cli command "int fa0/1"
 action 2.5 cli command "shut"
 action 3   cli command "no shut"
 action 4   cli command "end"
#to view:
sh even manager policy registered
sh event manager history events