07-16-2021 07:27 AM
Hi Folks,
Looking at the inline tagging config (CTS Manual) and I see this command is required on interfaces connecting the CTS devices.
Propagate SGT
Looking at the cisco documentation though there is a note for the above command that is slightly confusing. I may be misinterpreting it.
There is a note for propagate SGT that says :
“Use this command in situations where the peer device is not capable of receiving SGT over Ethernet packets (that is, when a peer device does not support Cisco Ethertype CMD 0x8909 frame format).”
If we have CTS manual configured on an interface I’d have assumed the other end/peer device would have to be able to understand the ethertype or the frame would be dropped.
Am I missing something in the Cisco Note?
Thanks
07-16-2021 07:44 AM
Yes the other device directly connected must support cts inline tagging. If one device does not then this is where you'd need to use SXP to transport the bindings.
I would have thought the command "no propagate sgt" would be required if the peer device does not support inline tagging - which I am not sure that statement means.
07-16-2021 08:12 AM
I thought it was a one off typo but checking the cisco documentation for other hardware and IOS versions it says the same. Might be a copy and paste job gone wrong but glad it isn't me that thinks it doesn't look quite right in the context.
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