HP StorageWorks 2/16V Brocade Fabric OS Command Reference Manual - Supporting - Page 76

2 backport backport Tests for backend ASIC-to-ASIC links. Synopsis backport [-nframes count][-ports itemlist][-lb_mode mode][-fr_type type][-extonly mode] Description Use this command to test the backplane routing and virtual channel (VC) allocation. This test applies to single blade as well as multiblade systems. The following items are tested: Proper backend port domain routing setup such that every user port has a valid path to every other user port. If a valid path does not exist between any two user ports, that path will fail to transmit the first frame between the two ports. Proper virtual channel mapping such that an arbitrarily large number of frames might be transmitted without running out of credit. If the VC credit mapping is not correct then the test will fail after enough frames have been sent to exhaust the initial credit. Proper trunking of backend ports. The frames send in bursts. If the trunking is not set up properly, the burst of frames do not arrive in-order. ASIC errors along each path. The test checks for CRC and ENC errors for each port used between the source and destination ports to help isolate failures. It also checks that each member of every trunk group along the path has sent or received at least one frame. Area routing between user ports is not tested. Use of this command assumes that the same database is used for domain and area routes; therefore, domain results are indicative of area operation. Virtual channel mapping is not tested if -extonly is set to 1. This command is supported only on Brocade 3250, 3850, 3900,4100, and 24000 platforms. The execution of this command is subject to Admin Domain restrictions that may be in place. Operands This command has the following operands: -nframes count Specifies the number of frames per port to send. The test runs until the specified number of frames has been transmitted on each port. The total number of frames that this command circulates is determined at runtime. The default value is 10 and the minimum value is 3. Any value less than the minimum is ignored and the minimum value is used. The maximum value is dependant on the platform. It is determined by the number of front-end ports on the specific platform and the type of frame (single frame, spinfab, or spinfab 1K) specified. -ports itemlist Specifies a list of user ports. The default value is all user ports. Refer to itemList for more information. -lb_mode mode Selects the loopback point for the test. By default, backport uses internal loopback. Mode Description 1 Port loopback (loopback plugs) 2 External (SERDES) loopback 44 Fabric OS Command Reference Manual 53-1000436-01