135
18. View the active maximum transmission unit enabled on this port for transmit in the NeighborMTU
field. Check the MTUCap value at both ends of every link and use the lesser speed.
19. View the administrative service level required for this port to send a non-subnet management
packet (SMP) message to the subnet manager in the MasterSmSL field.
20. View the maximum range of data virtual lanes supported by this port in the VLCap field. The value
are:
•vl0
•vl0ToVl1
•vl0ToVl3
•vl0ToVl7
• vl0ToVl14
21. See the VLArbHighCap field to view the maximum high-priority limit on the number of bytes
allowed for transmitting high-priority packets when both ends of a link operate with multiple data
virtual-lanes. This field is used with the virtual-lane arbitration table and specified as a VL/Weight
pair.
22. See the VLArbLowCap field to view the lowest arbitration value allowed by the arbiter in
determining the next packet in a set of packets to send across the link.
23. View the MTUCap field. This field is used in conjunction with NeighborMTU to determine the
maximum transmission size supported on this port. The lesser of MTUCap and NeighborMTU
determines the actual MTU used.
The values are: mtu256, mtu512, mtu1024, mtu2048, or mtu4096.
24. View the number of sequentially dropped packets at which the port enters a VLStalled state in the
VLStallCount field. The virtual lane exits the VLStalled state (8 * HLL ) units after entering it.
See section 18.2.5.4, Transmitter Queuing , InfiniBand® Architecture, Vol. 1, Release 1.0, for a
description of HLL.
25. View the maximum duration allowed to packets at the head of a virtual-lane queue in the HOQLife
field. This field is used with VLStallCount to determine the outgoing packets to discard.
26. View the administrative limit for the number of virtual lanes allowed to the link in the OperVL
field. The values are: vl0, vl0ToVl1, vl0ToVl3, vl0ToVl7, or vl0ToVl14.
27. View the Boolean value that indicates whether or not to support optional partition enforcement for
the packets received by this port in the InPartEnforce field.
28. View the Boolean value that indicates whether or not to support optional partition enforcement for
the packets transmitted by this port in the OutPartEnforce field.
29. View the Boolean value that indicates whether or not this port supports optional raw packet
enforcement for the raw packets received by this port in the InFilterRawPktEnf field.
30. View the Boolean value that indicates whether or not this port supports optional raw packet
enforcement for the raw packets transmitted by this port in the OutFilterRawPktEnf field.
31. View the number of subnet management packets (SMPs) that have been received on this port with
invalid M_Keys since initial power up or the last reset in the MKeyViolation field.
32. View the number of subnet management packets (SMPs) that have been received on this port with
invalid P_Keys since initial power up or the last reset in the PKeyViolation field.
33. View the number of subnet management packets (SMPs) that have been received on this port with
invalid Q_Keys since initial power up or the last reset in the QKeyViolation field.
34. View the number of Global Unique Identifiers (GUID) entries allowed for this port in the port table
in the GUIDCap field. Any entries that exceed this value are ignored on write and read back as
zero.
35. View the maximum propagation delay allowed for this port to reach any other port in the subnet in
the SubnetTimeout field. This value also affects the maximum rate at with traps can be sent from
this port. Delay is affected by switch configuration. This parameter, along with RespTime, may be
