L2 Border Handoff Design

Wes Schochet — Wed, 11 Sep 2024 12:46:41 GMT

Hi All-

We are i the process of building out our fabric. Included in the design will be a stack of 9300s as a L2 Border handoff. I read https://www.cisco.com/c/en/us/td/docs/solutions/CVD/Campus/cisco-sda-design-guide.html#L2_Border_Handoff but still have a couple of questions:

1. From a connectivity standpoint my 9300 stack will have an L2 connection tot he legacy network. Does it have an L2 connection to my SDA borders (one or both) or an L3 connection to my SDA borders (one or both).

2. The SVI for that legacy subnet moves into the fabric. Does it live on the L2 Border node (my 9300 stack) or the main site Border/CP node?

Any good reading / viewing recommendations would be appreciated.

Re: L2 Border Handoff Design

Andrii Oliinyk — Wed, 11 Sep 2024 13:21:07 GMT

1. Redundant L3 is-is driven connections (fabric links) inside the Fabric. BNs are not necessary be the remote side (it's just native solution many times)
2. It lives at L2-h/o BN

topic Re: L2 Border Handoff Design in Software-Defined Access (SD-Access)

L2 Border Handoff Design

Re: L2 Border Handoff Design