crafting VLAN tagged frames about ondatra HOT 8 CLOSED

@singh-prem Can you ask with Keysight about show to do this with OTG? It would be fine for this to only be an OTG test, since the ATE tests will be going away.

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Notes and questions:

• Unrelated to your question, the expression *ygot.Uint32(0x6007) can just be 0x6007.
• WithEtherType sets the ether type of the frame, so yes, if you call it multiple times, the second value will necessarily overwrite the first. That's to be expected.
• Can you provide documentation or a specification for a GDP frame?

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GDP is a protocol that is proprietary to google, to my knowledge there is no spec. Perhaps @dplore can assist?

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Here is an example of a test GDP packet without a VLAN:

https://github.com/openconfig/featureprofiles/blob/main/feature/experimental/p4rt/otg_tests/google_discovery_protocol_packetout_test/google_discovery_protocol_packetout_test.go#L401

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Do those existing tests are using a p4rt client to send the gdp packets. We have a test where the Ixia/OTG needs to generate those packets?

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Do those existing tests are using a p4rt client to send the gdp packets. We have a test where the Ixia/OTG needs to generate those packets?

I don't know of any example of this. @octpetre to advise

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Do those existing tests are using a p4rt client to send the gdp packets. We have a test where the Ixia/OTG needs to generate those packets?

Here is an example of flow generation on IXIA for a GDP packet without vlan:
https://github.com/openconfig/featureprofiles/blob/2f3893811fd0d314f92f8e07eabbf7b5e2cea749/feature/experimental/p4rt/ate_tests/google_discovery_protocol_packetin_test/google_discovery_protocol_packetin_test.go#L465

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sure @greg-dennis, will ask Keysight about how to get vlan tagged gdp frame on OTG.

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