Wrong value of BGPDstOrigAS in IPv4 flows

Denis.zm90 · ‎04-17-2025

I have configured NetFlow version 9 on an NCS 5500 series router, and I'm noticing that flows destined to my network show BGPDstOrigAS = 0

flow exporter-map EXP-MAP
version v9
options interface-table
options sampler-table
!
transport udp 2055
source Loopback0
destination xxxx

flow monitor-map xxx
record ipv4
option bgpattr
exporter EXP-MAP
cache timeout active 60
!

marce1000 · ‎04-17-2025

- FYI : https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwd54397

M.

-- Each morning when I wake up and look into the mirror I always say ' Why am I so brilliant ? '
When the mirror will then always repond to me with ' The only thing that exceeds your brilliance is your beauty! '

Giuseppe Larosa · ‎04-18-2025

Hello @Denis.zm90 ,

netflow accounting can classify using the peer AS or the origin AS. when using peer-AS that is default 0 means your own AS number. You should be able to revert to origin AS mode with a command.

Hope to help

Giuseppe

Denis.zm90 · ‎04-22-2025

@Giuseppe Larosa how to revert to origin AS mode ?