On Jul 11, 2012, at 4:32 PM, Berant Lemmenes wrote:

> Hello everyone,
> 
> I've recently noticed an issue with our IOS XR devices where I'm not getting 
> any src or dst AS information in nfsen. Digging around the archives I've 
> found mention of this same problem back in 2010 by Adrian Popa subject: "Not 
> getting AS information even if the exportedpackets have it"; however there 
> was no resolution.
> 
> We're moving more and more traffic over to IOS XR platforms and we'd really 
> like to keep the ability to filter based on AS information.
> 
> This is with the newest releases of both nfdump and nfsen.

you need to turn on bgp attribute-download to get ASN data on XR.


router bgp 65000
 address-family ipv4 unicast
  bgp attribute-download

cheers,
-b
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