IP SLA and TRACK not work as expected

[dragonhunt9111]

Dear experts,

I am configuring simple SLA like this :

ip sla 1
http get http://24h.com.vn
threshold 50
timeout 55
ip sla schedule 1 life forever start-time now

track 1 ip sla 1 reachability

When I show ip sla summary , I see that RTT time is about 80-90ms. It is higher than timeout (which I set is 55ms)

But I show track 1  track 1 still UP

As I understand, when RTT time is exceeding timeout, SLA will fail and track is down

But track is not down.

Pls help me understand this (I test on EVE-NG)

Thank you!!

[MHM Cisco World]

track 1 ip sla 1 state

Change to state and check.

[balaji.bandi]

what IOS that device running,. also worth adding frequency (how frequent you like to get)

here is my example working on eve-ng or pnetlabs

BB(config)# ip sla 100
BB(config-ip-sla)# tcp-connect 192.168.1.100 80
BB(config-ip-sla-tcp)# threshold 200
BB(config-ip-sla-tcp)# timeout 200
BB(config-ip-sla-tcp)# frequency 10
BB(config-ip-sla-tcp)# exit
BB(config)#
BB(config)# ip sla schedule 100 start-time now life forever

[M02@rt37]

Hello @dragonhunt9111 

Try this

ip sla 1
http get http://24h.com.vn
threshold 100
timeout 55
ip sla schedule 1 life forever start-time now

track 1 ip sla 1 reachability
delay down 10 up 5

In this example, if the RTT exceeds 100 milliseconds, the track state would transition to "DOWN." Adjust the threshold value according to your requirements.