Hi,
I have a few questions on the OF pipeline described in Slide 1 at
https://docs.google.com/presentation/d/1gN8GnpVGwku4mp1on7EBZiE41RI7lZ-FFmFS2QlUTKk/edit#slide=id.g210ac90bb8_0_78.
Sorry for the long mail.
Please point out if the scenarios/my packet flows are incorrect.
1. Say a regular packet arrives at br-int1 on port P1 from VM1 (i.e. VM1 is
not an SF).
2. Say the SFC Classifier (ingress) matches ACL ant it stamps NSH into the
packet and resubmits to the ingress-dispatcher.
3. Now there are two possible scenarios:
* Port P1 also has SFC service enabled on it.
i. Packet gets into
Ingress SFC service which sends the packet to egress dispatcher table.
ii. Egress SFC
Classifier acts on it. Since the packet has NSH and if the fist SFF is on the
same br-int the packet is given packet to Ingress SFC. This is as per-
[cid:[email protected]]
iii. Question: Doesn't
this cause a packet loop?
* Port P1 does not have SFC service enabled on it.
i. In this case a
packet with NSH would be given to some other service (say L3) which for forward
packet to final destination with NSH.
ii. Question: Isn't this
incorrect, packet with NSH should always be forwarded by SFC services?
Thanks in advance,
Vinayak
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