TTL Expired in Transit - Reason and Solution

One of the error messages you may get as a part of ping operation is TTL Expired in Transit . Here we can check what does this error message "TTL Expired in Transit " actually mean and how to solve this error message. The basic reason to get this message is the Time To Live value set for a packet reduced to zero while traveling through a network. TTL (Time To Live) value is configured in a way to reduce by one when the packet pass through hops. It is because of avoiding any chance of infinite looping of packets. The main reason for the error message is faulty routing loop where the packet trapped in a loop till the Time To Live value expires. So the primary solution for the error message "TTL Expired in Transit" is to correct the routing table to avoid any loop in the table.


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Possible Reasons for TTL Expired in Transit

The major reasons for this error message are:

1. Faulty Routing loop
   
   
2. TTL Value of a packet is set very low

How to Solve TTL Expired in Transit

To fix this issue we should find the actual reason behind this error message. Follow the steps below to fix it.

1. Use Tracert to Check the actual location of error
   
   First step you should do is to perform a tracert test and check the actual location of the error.
   
   
   If you are not sure about the working of this command, you may visit the link below.
   How to Use Tracert command
   
   
   
2. Check Route Table for any infinite loop
   
   The major reason behind "TTL Expired in Transit" is misconfigured router and the faulty routing loop. We need to correct the router configuration and make sure that there is no routing loop. To check the routing table in your computer use the following command prompt command.
   
   route print
   
   
   
   This command will show the route table stored. For Cisco the command to Route table configured is show ip route.
   
   
3. Increase the Time To Live Value of a packet
   
   We also need to make sure that the Time To Live value set for the packet is reasonable. You can increase the TTL value of a packet using the -i parameter with the ping command.

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3. Destination Net Unreachable
   
   
4. Request Timed Out

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