[j-nsp] asn32: as-path formatting ?

Alexandre Snarskii snar at paranoia.ru
Fri May 16 10:43:07 EDT 2008


Hi!

Since JunOS 9.1, Juniper supports 32-bit AS Numbers (RFC 4893), and release 
notes states that: 
<cite>
Support for 4-byte AS numbers is also extended to the AS extended-community 
attribute and AS-path regular expressions 
</cite>
but documentation on defining AS Path regular expressions does not provide 
any examples using 32-byte asn's. 

So, I'm just curious, how should they be formatted ? 

For example, If I want to filter paths originated by Gert Doering's AS3.3,
should I set up filter as 'as-path as33 "3.3$", or it will be interpreted
by old rules as '<anything> 3 <any as> 3' and I need to use some other 
syntax ? 

PS: and, Gert, thanks for providing AS3.3, AS-SPACENET and route-object
with origin: AS3.3 for real-life testing :) 



More information about the juniper-nsp mailing list