What is Underlay Network and Overlay Network?

#overlaynetwork #underlaynetwork
In this video, you will learn about Underlay Network and Overlay Network in the Cisco Software-Defined Access Environment. An Underlay network is the physical network responsible for delivering packets like DWDM, L2, L3, MPLS, or internet, etc.. At the same time, an overlay is a logical network that uses network virtualization to build connectivity on top of physical infrastructure using tunneling encapsulations such as VXLAN, GRE, and IPSec.
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[@desaironak11]

This is very nicely explained, in simple way. about overlay and underley

[@imedita]

Hi,
We are Glad the video content is useful. Keep watching; a new video is posted weekly at 09 PM IST. Happy Learning. 🙂
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[@shahbaz-u8l]

This is one of the best explanations about underlay and overlay network

[@imedita]

Hi
We are Glad the video content is useful. Keep watching; a new video is posted daily at 09 PM IST. Happy Learning. 🙂
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[@MKDeepala23]

Very clearly explaned. Thank you

[@imedita]

Hi,
We are Glad the video content is useful. Keep watching; a new video is posted weekly at 09 PM IST. Happy Learning. 🙂
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[@rajaparthiban410]

detailed explanations in the video

[@imedita]

Hi,
We are Glad the video content is useful. Keep watching; a new video is posted weekly at 09 PM IST. Happy Learning. 🙂🙂👍
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[@feerozbthapa]

Excellent stuff man, much appreciated

[@imedita]

Hi Feeroz,
We are Glad the video content is useful. Keep watching; a new video is posted daily at 09 PM IST. Happy Learning. :-)
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[@mohankumarm1055]

Thanks for sharing the details..

[@imedita]

Glad the video content is useful. Keep watching, a new video is posted everyday at 09 PM IST. Happy Learning. :-)
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[@kaleempak]

Best Lecture Keep it up

[@imedita]

Glad the video content is useful. Keep watching, a new video is posted everyday at 09 PM IST. Happy Learning. :-)

[@anindya24]

Excellent knowledge

[@imedita]

😊👍

[@zARE_gaming]

Very helpful 👍 thx

[@imedita]

Hi
Glad the video content is useful. Keep watching, a new video is posted everyday at 09 PM IST. Happy Learning. :-)
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[@maxnoob1982]

can we use vxlan as tunnel underlay to overlay ?

[@imedita]

Yes, VXLAN (Virtual Extensible LAN) can be used as a tunneling protocol for underlay networks in an overlay network architecture.
In an overlay network, VXLAN is often used as the tunneling technology to create logical networks (also known as overlay networks) on top of an existing underlay network infrastructure. The underlay network typically provides connectivity between physical devices, while VXLAN encapsulates traffic in UDP packets, allowing virtual networks to be extended over the underlay network.
VXLAN helps overcome limitations in traditional VLAN-based networks by providing scalability, flexibility, and isolation. It allows for the creation of virtual Layer 2 networks (overlays) that can span across physical boundaries and be extended across data centers or cloud environments.