Symptom
Have the setup like this.
ISR1k---------------------Server(with FTP IPv6 running).
Configure IP SLAs for FTP IPV6 as below:
ip sla 14
ftp get ftp://wasp:1-1=two@2001:420:54FF:4::320:101/test.txt
vrf Mgmt-intf
timeout 50000
threshold 50000
ip sla schedule 14 life forever start-time now
FTP-IPv6 is running in the server.
wasp@ubuntu-owping-41:~$ netstat -an6 | grep 21
tcp6 0 0 :::21 :::* LISTEN
wasp@ubuntu-owping-41:~$
We are getting Timeout like this:
rtr1#show ip sla statistics 145
Entry not found
rtr1#show ip sla statistics 14
IPSLAs Latest Operation Statistics
IPSLA operation id: 14
Latest RTT: NoConnection/Busy/Timeout
Latest operation start time: 17:39:36 PDT Mon Oct 1 2018
Latest operation return code: Timeout
Number of successes: 0
Number of failures: 36
Operation time to live: Forever
Attaching the Debug Logs
Conditions
IPV4 it is working fine. Problem with respect to IPv6 only.