All,
I know this might be strange, or might be an IOS behavior, but I need an explanation if you have one.
On my PE router, I have a BGP with one of our customers, which is advertising two prefixes. Now whenever I traceroute to one of IPs belongings to his prefix, traceroute result of the first hop shows me the next hop (customer's serial IP address) as expected BUT with bogus AS number, or to be specific, an AS number of my upstream provider which is on a remote PE.
I know it's conflicting, but again, the traceroute result is correct, however the reported BGP AS between the brackets are just .. bogus!
Is there any explanation for this?
