HP StorageWorks 2/64 - Core Switch, Command Reference Manual

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56 Fabric OS commands
Tests for backend ASIC-to-ASIC links.
Synopsis
backport [-nframes count ][-ports itemlist ][-lb_mode mode ][-fr_type
type ][-extonly mode ]
Availability
admin
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.
NOTE: Virtual channel mapping is not tested if
-extonly
is set to 1.
Operands
This command has the following options:
backport
-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
run time. 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.
-ports itemlist
Specifies a list of user ports. The default value is all user ports. See
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
5 Internal (parallel) loopback