topic Re: Cisco LISP can communicate between same segment like VxLAN? in Software-Defined Access (SD-Access)

Cisco LISP can communicate between same segment like VxLAN?

mhiyoshi — Wed, 02 Feb 2022 04:12:21 GMT

Hello

I am refering to the following URL however I can not understand yet. So I would like to ask how to configure

the LISP routing for same segment.

https://community.cisco.com/t5/networking-documents/lisp-fundamentals-and-troubleshooting-basics/ta-p/3155439

I just want to do the following image.

Actually is it possible?

Best Regards,

Masanobu Hiyoshi

Re: Cisco LISP can communicate between same segment like VxLAN?

Flavio Miranda — Wed, 02 Feb 2022 15:17:46 GMT

Just for curiosity, can explain what is your goal ? I´m asking this cause LISP has became common but it is related to some technology like fabric. Fabric is usually configured using some orchestration like DNAC and them, LISP is part of the process.

The way you put it, it seems to me that you want to setup LISP just like you could setup let´s say BGP or OSPF. It that the case?

I know LISP is actually an IETF protocol and as such must have many other utilization but I am ask from the perspective I have seen it being used so far.

Re: Cisco LISP can communicate between same segment like VxLAN?

rasmus.elmholt — Thu, 03 Feb 2022 20:26:22 GMT

Hi,

LISP itself does not support to carry L2 across the L3 core. LISP only support to tunnel L3. This is the reason why we have VXLAN, to carry L2 segments across a L3 infrastructure.

So, it is possible to have a stretched L2 across a L3 core, with VXLAN, MPLS and so on. But not with pure LISP.

Re: Cisco LISP can communicate between same segment like VxLAN?

mhiyoshi — Fri, 04 Feb 2022 01:55:52 GMT

Hi Flavio,

Thank you for your comment, however my goal is that rasmus.elmholt has already explained!

I want to just to use LISP for L2 segment like VxLAN however the LISP itself can not carry it out.

Best Reards,

Masanobu Hiyoshi

Re: Cisco LISP can communicate between same segment like VxLAN?

mhiyoshi — Fri, 04 Feb 2022 01:58:04 GMT

Hi Rasmus,

Thank you for your comment! Now I understad the LISP specification.

Regards,

Masanobu Hiyoshi