BGP Reg Exp

From: JB (jellyboy@gmail.com)
Date: Wed Dec 27 2006 - 06:58:44 ART


Hi all, question asks for a router to accept prefixes from BB1 that
have been originated by themselves and their directly connected
customers.

Solution says: ^54(_[0-9]+)?$

I got ^54_[0-9]*$.

I ran mine thru looking-glass and it "seems" to work. I would
appreciate it if someone could explain the differences, if any,
between the two to further my understanding.

TIA,

JB



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