Tuesday, 27 August 2013

why are there several times repeated AS number appearing in certain AS path?

why are there several times repeated AS number appearing in certain AS path?

I try to use the bdgdump shared library to read routeview's MRT format
file. In the output, I found the following AS path:
1299 9318 38091 38091 38091 38091 38091 18313
The are many of them and this is only one example.
My question is why the ASN 38091 appears several times? Is it some kind of
error? If it is not, why does it happen?

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