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What does "TTL expired in transit" mean?

We have a T1 line between two sites. Our main office and warehouse. When the line is down and I ping to the router which is an Adtran on the other site, we normally get the answer "Request timed out," but now we get the answer "TTL expired in transit." What does it mean?
they been down for more than 2 hours and ISP says that line seems to be fine but they dont see any traffic on it. Ive rebooted both Adtran devices. Ping did state request timed out till ISP tech started doing some testing.
thanks
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eazstream
Asked:
eazstream
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2 Solutions
 
Rodney BarnhardtServer AdministratorCommented:
TTL=Time to live
A packet has a life timer that keeps it from looping forever. It basically mean the time ran out before there was confirmation the packet arrived at its destination.
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eazstreamAuthor Commented:
do you think this is an issues with our hardware routing devices or ISP?
thanks
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Rodney BarnhardtServer AdministratorCommented:
Is it for everything you send? From a command prompt on a computer, type the following:
tracert 209.85.165.174
This is the IP of a Google server. If you get a reply the first time, that is your gateway, if you get another reply, that is your ISP. This can help you track down the problem. If it gets to your ISP, it may be there problem.
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eazstreamAuthor Commented:
thanks but this wont work, main office connect out to the net with a different T1 line, we have 2 T1 lines, one for outgoing to the internet and the other one is in question which connects the warehouse to the main office and provides warehouse access to the net.
thanks for your patience, im new to this.
thanks again
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