HP StorageWorks MSA 2/8 HP StorageWorks Fabric OS V3.1.x/4.1.x Reference Guide - Page 60

Fabric OS Commands -extonly enable Specify 1 to enable external test only mode. The default value is 0. This command normally sends bursts of frames from each port under test to every other port in the list. In extonly mode, backPort will send only one burst of frames to each port from each miniswitch to miniswitch link. This tests all of the external connections with only (K*N) frames instead of the N2 frames required in the all to all mode. This mode is intended to be used in ESS/burn-in testing to optimize test time. This command tests only the external connections between each miniswitch and txdpath is used to test the internal ASIC to ASIC paths. In this mode the test does NOT check all of the VC allocation so it should not be used for software regression test. Valid values are: 0 Send frames from all ports to all other ports. 1 Send only one burst of frames to each link. Example To test for back-end miniswitch to miniswitch links: switch:admin> backport Running Backport Test ..... switch:admin> Errors When the command detects failures, the test may report one or more of the following error messages: 0x3a INIT 0x28 ERR_STAT 0x29 XMIT 0x2c PORT_DIED 0x2e PORT_STOPPED 0x38 ERR_STATS 60 Fabric OS Version 3.1.x/4.1.x Reference Guide