The documentation for IOS-XR suggests that enabling extended-router in the sFlow configuration should export "Autonomous system path to the destination", at least on the 8000 series routers:
https://www.cisco.com/c/en/us/td/docs/iosxr/cisco8000/netflow/command/reference/b-netflow-cr-cisco8k/m-sflow-commands.html I couldn't find a similar option in the NetFlow/IPFIX configuration guide, but I might have missed it. On Thu, Mar 28, 2024 at 10:48 AM Saku Ytti <s...@ytti.fi> wrote: > Hey, > > On Thu, 28 Mar 2024 at 17:49, Peter Phaal <peter.ph...@gmail.com> wrote: > > > sFlow was mentioned because I believe Brian's routers support the > feature and may well export the as-path data directly via sFlow (I am not > aware that it is a feature widely supported in vendor NetFlow/IPFIX > implementations?). > > Exporting AS information is wire-format agnostic feature, if it's > supported or not, it can equally be injected into sFlow, NetflowV5 > (src and dst only), NetflowV9 and IPFIX. The cost is that you need to > program in FIB entries the information, so that the information > becomes available at look-up time for record creation. > > In OP's case (IOS-XR) this means enabling 'attribute-download' for > BGP, and I believe IOS-XR will never download any other asn but src > and dst, therefore full information cannot be injected into any > emitted wire-format. > -- > ++ytti >
