Hello forum members,
So the other day i was testing VXLAN in a virtual environment with a bunch of Nexus 9000v's (ver. 9.3.1)
I stumbled upon a Cisco document, where they mentioned a VXLAN design scenario with a L3 overlay for reachability to external networks, i tested this out myself but had no luck, i am assuming it may be a bug? does anyone know if this may be the case?
link to the document:
https://www.cisco.com/c/en/us/products/collateral/switches/nexus-9000-series-switches/guide-c07-734107.pdf
page 40
they mentioned something about an external network which is connected to for example a spine or leaf with an IGP, and for the devices residing at the vnets to have a succesful external connection to the igp network, you simply have to redistribute the external IGP network in the l3 overlay BGP address family and vice versa redistribute bgp to the IGP (l3 overlay vrf).
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P.S. i found this other VXLAN L3 overlay design scenario aswell ,which looks pretty wicked if you ask me since you can have mutiple different l3 overlay VRFs and basically you configure a trunk with a subinterface for each l3 overlay vrf. (page 53)
https://www.cisco.com/c/dam/m/sl_si/events/2016/cisco_dan_inovativnih_resitev/pdf/cisco_day_slovenia_2016_vxlan_marian_klas_final.pdf
but I had no success with that one aswell and after digging on the web, i stumbled across this thread, where someone mentions that this is not supported with vxlan, was this idea scraped off in later versions if i may ask?
https://community.cisco.com/t5/data-center-switches/vxlan-underlay-in-802-1q/td-p/3708984
any help/tips would be appreciated, i would also be glad to hear if someone managed to get any of these working.
regards,
Steve
