Unable to access the subnet endpoints

[sridcloud]

Hi all,

I have setup a BD/Subnet/EPG/etc in the ACI environment. I have performed a BGP based L3out to a router as well. From the router, I am able to access only the gateway of the subnet and not other endpoints in the subnet. I have verified the static ports in the EPG, they are all fine.

What could I be missing?

[Tarakesh Jetti]

Hi, 

Please verify the five important functions of L3out:

1.     Learn external routes via routing protocols (or static routes)

2.     Distribute learned external routes (or static routes) to other leaf switches

3.     Advertise ACI internal routes (BD subnets) to outside ACI

4.     Advertise learned external routes to other L3Outs (Transit Routing)

5.     Allow traffic to arrive from or be sent to external networks via L3Out by using a contract

And to know more about L3out BGP configuration, do check this link:

https://www.cisco.com/c/en/us/solutions/collateral/data-center-virtualization/application-centric-infrastructure/guide-c07-743150.html#L3OutBGP

If the issue still persists after checking from this link, please raise a TAC case to do live troubleshooting. 

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 the 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.

Thanks and regards,

Tarakesh Jetti

Customer Success Specialist - CX Team.