Patent ID: 9424218
Filing Date: 2016-08-23
CPC Classification: G06F

Claim Text:
1. A SAS expander comprising: a switch core operative to detect whether a new connection request is in conflict with an existing connection request and for determining if there is a free destination phy not operationally used for an origination of a connection request; a plurality of SAS expander phys coupled to the switch core; a Serial Management Protocol (SMP) originator coupled to the switch core, the SMP originator being configured to only originate connection requests; an SMP receptor coupled to the switch core, the SMP receptor being configured to only receive connection request; and a microcontroller coupled to non-transient digital storage media storing code segments including (a) code segments determining if there is a free SMP receptor; and (b) code segments which disable BACKOFF REVERSE PATH for the free SMP receptor if the connection request came from a virtual phy.