Dear Mr Naveen
You cannot check local or remote loop (or) loop break when using the Fast Ethernet.
When Matter comes to Troubleshooting, You wll get the alarms if you are using any Modems.
When you log a call with vendor, he can identify the issue basing up on his architechture he is using, like vendor will be able to identify location of issue basing upon the alarms on their devices
if cable issues are there you may find CRC errors,
In your deviceyou can check Reliability it should be (255/255)
If vendor claims that there is no issue from his side then we must be able to ping the vendor interface IP when we connect the cable directly to our LAPTOP.
If we are unable to ping try to change the cable which you are not suspecting to be faulty.
Even though you are unable to ping how ever vendor should come in to picture for the investigation of area of issue.
Please rate the helpful posts
Regards
Thanveer
"Everybody is genius. But if you judge a fish by its ability to climb a tree, it will live its whole life believing that it is a stupid."