I know to most of you, this would be a simple question.I am scratching my head and try to understand how "AS 100" appears when I do a traceroute to 205.90.31.1 when on the first hop (155.1.37.3), the router 155.1.37.3 is in AS 200.
Rack1SW1#traceroute 205.90.31.1
Type escape sequence to abort.
Tracing the route to 205.90.31.1
1 155.1.37.3 [AS 100] 12 msec 12 msec 8 msec
2 155.1.23.2 [AS 100] 20 msec 20 msec 12 msec
3 192.10.1.254 20 msec * 28 msec