IP SLA

[rpalmeida]

Hello

I want to configure this code in Cisco 3850 but when i do the past to cli in the 3850, i get an error:

track 1 ip sla 1 reachability
!
!
ip route 10.8.254.73 255.255.255.255 10.8.254.58 track 1
!
!
ip sla 1
icmp-echo 10.8.254.73 source-ip 10.8.254.57
threshold 20
timeout 1000
frequency 20
ip sla schedule 1 life forever start-time now
!
!
event manager applet noshutInterface2
event track 1 state down
action 10 cli command "enable"
action 11 cli command "conf t"
action 12 cli command "interface Te1/0/1"
action 13 cli command "no shut"
action 14 cli command "interface Te1/0/2"
action 15 cli command "no shut"
action 28 cli command "exit"
event manager applet shutInterface2
event track 1 state up
action 10 cli command "enable"
action 11 cli command "conf t"
action 12 cli command "interface Te1/0/1"
action 13 cli command "shut"
action 14 cli command "interface Te1/0/2"
action 15 cli command "shut"
action 28 cli command "exit"

The error is i cant configure this line:

"event track 1 state down"

Only "event " command is allowed, after that i cant write "track" :

Only options:

sw1-ed(config-applet)# event ?
application Application specific event
cli                        CLI event
config                 Configuration policy event
counter               Counter event
env                     Environmental event
gold                    GOLD event
identity                Identity event
interface              Interface event
ioswdsysmon       IOS WDSysMon event
mat                      MAC address table event
neighbor-discovery Neighbor Discovery event
none                    Manually run policy event
oir                       OIR event
rf Redundancy      Facility event
routing                 Routing event
rpc                      Remote Procedure Call event
snmp                   SNMP event
snmp-notification SNMP Notification Event
snmp-object        SNMP object event
syslog                  Syslog event
tag event tag identifier
timer Timer event

So i cant configure all the SLA...

Any help?

Best regards,

[M02@rt37]

Hello @rpalmeida 

Use a syslog event instead:

event syslog pattern "%TRACK-6-STATE: 1 ip sla 1 reachability Up -> Down"

--ensure on your log that is the good message...but I think it should work this way.

[rpalmeida]

Hello M02@rt37

Thanks for your fast answer.

Tell me something, the IP that i´m tracking is 2 hops for distance, i have other switch in the middle, i think i won´t receive syslog because isnt directly connect...is that true?

Best Regards.

[M02@rt37 · Accepted solution]

Your're welcome @rpalmeida 

​No, the number of hops between your device and the target IP address does not prevent syslog messages from being generated. IP SLA feature is designed to monitor the reachability of remote IP addresses, regardless of their distance in term of hops. When an IP sla operation detect a change in the state of the tracked IP—such as transitioning from reachable to unreachable—it can trigger a syslog message on the local device where the IP SLA is configured...