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MauriceMedhat
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Reflexive NAT use case

Hello,

 

I struggle to under Reflexive NAT and when can it be useful to use?

 

Thanks in advance!

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shank89
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Hi

Have you had a read of this page https://docs.vmware.com/en/VMware-NSX-T-Data-Center/3.2/administration/GUID-46900DFB-58EE-4E84-9873-... ?

 

It is essentially stateless Nat and can be configured when you have an active active gateway.  This can't be done with traditional Nat as that is stateful and requires a gateway to be in active standby, which allows the states / tables to be maintained.

Hopefully this clears it up for you.

 

Thanks 

 

 

 

Shashank Mohan

VCIX-NV 2022 | VCP-DCV2019 | CCNP Specialist

https://lab2prod.com.au
LinkedIn https://www.linkedin.com/in/shankmohan/
Twitter @ShankMohan
Author of NSX-T Logical Routing: https://link.springer.com/book/10.1007/978-1-4842-7458-3
MauriceMedhat
Contributor
Contributor

Hello Shank,

 

First of all, thank you for your assistance.😊

Yes, I have read that document but I don't get how asymmetrical will occur?

So to sum up Reflexive NAT from my understanding, it is 1-to-1 mapping unlike SNAT and DNAT where you can have one-to-many relationship, right?

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shank89
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Some 'deeper' info for you here http://linux-ip.net/html/nat-stateless.html.

Shashank Mohan

VCIX-NV 2022 | VCP-DCV2019 | CCNP Specialist

https://lab2prod.com.au
LinkedIn https://www.linkedin.com/in/shankmohan/
Twitter @ShankMohan
Author of NSX-T Logical Routing: https://link.springer.com/book/10.1007/978-1-4842-7458-3
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