Packet Receive State Machine

Refer to Figure 25-19 on page 656.

Figure 25-19. Packet Receive State Machine

When Link Down, Discard or Corrupt Inbound Packets

If the Link Layer receives any packets while any of the following conditions are true, the packet will either be discarded or, if the receiving device is a switch or a router, corrupted and passed on to the next external link:

  • Reset is asserted to the Link Layer.

  • PhyLink = Down. The external link is down.

  • PortState = Down. The Link Layer has been commanded to enter the Down state (via an SMP).

While the port's Link Layer is in the Up state (the external link is up and the Link Layer is in the ...

Get InfiniBand Network Architecture now with the O’Reilly learning platform.

O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.