SDWAN - rx-ip-ttl-expired - WHY these DROPS in vEDGE

Condition:

We have seen on vEDGE on counter which is increase , Counter name "rx-ip-ttl-expired "

Lets understand these Errors 

When we run the command on vEDGE "show interface detail ge0/3" we will see the rx-errors and when we check more deep we found that these rx-error due to rx-ip-ttl-expired.

 rx-ip-ttl-expired—Received IP packets whose time-to-live value expired.

TTL Expired in Transit tells the Time To Live value set for the ping packets is too low while traveling through the network before reaching the destination.

LAB results for explation 

vEDGE 

Lets clear the counters on vEDGE 

LAN SIDE PORT ge0/3 which we have seen these errors

Lets now generate the ICMP packet with IP TTL =1 so that this will reported TTL Expired on vEDGE 

START Ping from LAN side PC 

Now lets check on vEDGE for These Packet produce the rx-error

rx-error = 5 packets and same rx-ip-ttl-expired = 5 packets , means the packets which are vEdge mark TTL expired they are showing as rx-error as well.

This value can increase if you have not stop the devices which is sending TTL value 1 packets