Solved: Re: Cisco ACI connected to Legacy N9K with VPC

Daniel Blanco · ‎04-09-2023

Good Morning !!

I´m going to connect ACI fabric to legacy N9K with VPC for extend L2 between them. I would like to know if there are some best practices to configure it. For example, STP configuration mode in N9K side.....lacp fast rate....etc...

Could somebody help me ?

Thanks !!

BR,

disales · ‎04-26-2023

Hello there @Daniel Blanco

There are not that many things to take into considerations ACI will behave a single "big switch" for you to connect to.
the only real considerations from the n9k side (regarding STP) is if you have 2 or more switches connected to aci and need to have stp msgs being sent among them (use aci as a transparent switch), while it is supported we would ideally avoid it.

you can find some useful information on the link bellow, on the section "About Virtual Port Channels in Cisco ACI"

https://www.cisco.com/c/en/us/td/docs/dcn/aci/apic/5x/layer-2-configuration/cisco-apic-layer-2-networking-configuration-guide-52x/access-interfaces-52x.html

If you find my reply solved your question or issue, kindly click the 'Accept as Solution' button and vote it as helpful.

You can also learn more about Cisco ACI through our live Ask the Experts (ATXs) session. Check out Cisco ACI ATXs Resources [https://community.cisco.com/t5/data-center-and-cloud-knowledge/cisco-aci-ask-the-experts-resources/ta-p/4394491] to view the latest schedule for upcoming sessions, as well as the useful references, e.g. online guides, FAQs.

View solution in original post

disales · ‎04-26-2023

Hello there @Daniel Blanco

There are not that many things to take into considerations ACI will behave a single "big switch" for you to connect to.
the only real considerations from the n9k side (regarding STP) is if you have 2 or more switches connected to aci and need to have stp msgs being sent among them (use aci as a transparent switch), while it is supported we would ideally avoid it.

you can find some useful information on the link bellow, on the section "About Virtual Port Channels in Cisco ACI"

https://www.cisco.com/c/en/us/td/docs/dcn/aci/apic/5x/layer-2-configuration/cisco-apic-layer-2-networking-configuration-guide-52x/access-interfaces-52x.html

If you find my reply solved your question or issue, kindly click the 'Accept as Solution' button and vote it as helpful.

You can also learn more about Cisco ACI through our live Ask the Experts (ATXs) session. Check out Cisco ACI ATXs Resources [https://community.cisco.com/t5/data-center-and-cloud-knowledge/cisco-aci-ask-the-experts-resources/ta-p/4394491] to view the latest schedule for upcoming sessions, as well as the useful references, e.g. online guides, FAQs.