From: csc david (davidcsc2002@yahoo.com.cn)
Date: Thu Nov 14 2002 - 11:09:53 GMT-3
Hi, I have some difficulties in understanding as-path expression:
ip as-path access-list 1 permit ^4_[0-9]*$
Cisco website explains that means Allow Networks Originated from AS 4, and ASs Directly Attached to AS 4, The [0-9]* specifies that any connected AS with a valid AS number can pass the filter
but I cannot understand. Could you give me some explanations in detail ?
Thanks a lot!
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