Hi all,
I recently came across a presentation from Cisco Live 2020 on the Cisco Live OnDemand website (BRKRST-2377) : https://www.ciscolive.com/c/dam/r/ciscolive/emea/docs/2020/pdf/BRKRST-2377.pdf
While reviewing the material, I noticed a point of interest on slide 42 regarding the ESP size, which was mentioned as 36 Bytes. I wanted to confirm if this is accurate or if it might be a typographical error ?
![image (4).png image (4).png](https://community.cisco.com/t5/image/serverpage/image-id/210342i40FBEACD0C93F949/image-dimensions/532x251?v=v2)
I'm looking for the correct (or an estimated) overhead (Label+ESP+UDP) size that will be added in Cisco SD-WAN ?
I've also come across information in a Cisco Document (not SD-WAN) (https://www.cisco.com/c/dam/global/en_ca/solutions/strategy/docs/sbaGov_wanDguide.pdf), which indeed mentions the addition of 36 bytes, but specifically for "Transport Mode." However, this doesn't align with the SD-WAN encapsulation type.
![image (5).png image (5).png](https://community.cisco.com/t5/image/serverpage/image-id/210343iC37303EDDB32757F/image-size/large?v=v2&px=999)
Lastly, I conducted a Wireshark capture in an SD-WAN Network (EVE-NG), and although I observed a lower overhead than 36 bytes (something like ~30 bytes including ESP, Label and UDP encapsulation), but I'm not sure due to encryption.
Thank you for your time !