BGP regular expression Question

From: Mike Haddad (mike.haddad@hotmail.com)
Date: Thu Mar 06 2008 - 04:20:06 ARST

Hello,

  I have some confusion between the below regular expressions:
show ip bgp reg ^54$
show ip bgp reg ^54_

Both of the above are giving me same routes, routes learned from AS54.
However, the first second command gives me the learned routes along with the
full AS path and the first one only shows the AS 54 in the AS path.

Thanks in advance,

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